From f3419735279564d40467ebe4147d8a41cef00685 Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Sun, 20 Nov 2016 21:26:02 +0000 Subject: usb: dwc2: Do not set host parameter in peripheral mode Since commit "usb: dwc2: Improve handling of host and device hwparams" the host mode specific hardware parameter aren't initialized in peripheral mode from the register settings anymore. So we better do not set them in this case which avoids the following warnings on bcm2835: 256 invalid for host_nperio_tx_fifo_size. Check HW configuration. 512 invalid for host_perio_tx_fifo_size. Check HW configuration. Fixes: 55e1040e424b ("usb: dwc2: Improve handling of host and device hwparams") Acked-by: John Youn Signed-off-by: Stefan Wahren Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/params.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index a786256535b6..fd5f7f83843d 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -1132,6 +1132,12 @@ static void dwc2_set_parameters(struct dwc2_hsotg *hsotg, false, "host-dma", true, false, dma_capable); + dwc2_set_param_host_rx_fifo_size(hsotg, + params->host_rx_fifo_size); + dwc2_set_param_host_nperio_tx_fifo_size(hsotg, + params->host_nperio_tx_fifo_size); + dwc2_set_param_host_perio_tx_fifo_size(hsotg, + params->host_perio_tx_fifo_size); } dwc2_set_param_dma_desc_enable(hsotg, params->dma_desc_enable); dwc2_set_param_dma_desc_fs_enable(hsotg, params->dma_desc_fs_enable); @@ -1140,12 +1146,6 @@ static void dwc2_set_parameters(struct dwc2_hsotg *hsotg, params->host_support_fs_ls_low_power); dwc2_set_param_enable_dynamic_fifo(hsotg, params->enable_dynamic_fifo); - dwc2_set_param_host_rx_fifo_size(hsotg, - params->host_rx_fifo_size); - dwc2_set_param_host_nperio_tx_fifo_size(hsotg, - params->host_nperio_tx_fifo_size); - dwc2_set_param_host_perio_tx_fifo_size(hsotg, - params->host_perio_tx_fifo_size); dwc2_set_param_max_transfer_size(hsotg, params->max_transfer_size); dwc2_set_param_max_packet_count(hsotg, -- cgit v1.2.3 From de02238d6a7982a71682fe8da2996993a5a5eee7 Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Sun, 20 Nov 2016 21:26:03 +0000 Subject: usb: dwc2: fix dwc2_get_device_property for u8 and u16 According to the Devicetree ePAPR [1] the datatypes u8 and u16 are not defined. So using device_property_read_u16() would result in a partial read of a 32-bit big-endian integer which is not intended. So we better read the complete 32-bit value. This fixes a regression on bcm2835 where the values for g-rx-fifo-size and g-np-tx-fifo-size always read as zero: Invalid value 0 for param g-rx-fifo-size Invalid value 0 for param g-np-tx-fifo-size [1] - http://elinux.org/images/c/cf/Power_ePAPR_APPROVED_v1.1.pdf Fixes: 05ee799f202 ("usb: dwc2: Move gadget settings into core_params") Acked-by: John Youn Signed-off-by: Stefan Wahren Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/params.c | 12 ------------ 1 file changed, 12 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index fd5f7f83843d..2c7b6243734c 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -247,8 +247,6 @@ MODULE_DEVICE_TABLE(of, dwc2_of_match_table); static void dwc2_get_device_property(struct dwc2_hsotg *hsotg, char *property, u8 size, u64 *value) { - u8 val8; - u16 val16; u32 val32; switch (size) { @@ -256,17 +254,7 @@ static void dwc2_get_device_property(struct dwc2_hsotg *hsotg, *value = device_property_read_bool(hsotg->dev, property); break; case 1: - if (device_property_read_u8(hsotg->dev, property, &val8)) - return; - - *value = val8; - break; case 2: - if (device_property_read_u16(hsotg->dev, property, &val16)) - return; - - *value = val16; - break; case 4: if (device_property_read_u32(hsotg->dev, property, &val32)) return; -- cgit v1.2.3 From 6118d0647b10eaca06b278dee2022602d8f2f07a Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Sun, 20 Nov 2016 21:26:04 +0000 Subject: usb: dwc2: fix default value for DMA support The current defaults for DMA results on a non-DMA platform in a unnecessary error message: Invalid value 0 for param gadget-dma So fix this by using dma_capable as default value. Fixes: 9962b62f1be ("usb: dwc2: Deprecate g-use-dma binding") Acked-by: John Youn Signed-off-by: Stefan Wahren Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/params.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 2c7b6243734c..30b954e148ed 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -1088,7 +1088,7 @@ static void dwc2_set_gadget_dma(struct dwc2_hsotg *hsotg) /* Buffer DMA */ dwc2_set_param_bool(hsotg, &p->g_dma, false, "gadget-dma", - true, false, + dma_capable, false, dma_capable); /* DMA Descriptor */ @@ -1118,7 +1118,7 @@ static void dwc2_set_parameters(struct dwc2_hsotg *hsotg, dwc2_set_param_bool(hsotg, &p->host_dma, false, "host-dma", - true, false, + dma_capable, false, dma_capable); dwc2_set_param_host_rx_fifo_size(hsotg, params->host_rx_fifo_size); -- cgit v1.2.3 From efc95b2ca42424de222119a3a260624f3a050f8e Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Sun, 20 Nov 2016 21:26:05 +0000 Subject: usb: dwc2: gadget: fix default value for gadget-dma-desc The current default for gadget DMA descriptor results on bcm2835 in a unnecessary error message: Invalid value 1 for param gadget-dma-desc So fix this by using hw->dma_desc_enable as default value. Fixes: dec4b55677e ("usb: dwc2: gadget: Add descriptor DMA parameter") Acked-by: John Youn Signed-off-by: Stefan Wahren Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/params.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 30b954e148ed..11fe68a4627b 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -1094,7 +1094,7 @@ static void dwc2_set_gadget_dma(struct dwc2_hsotg *hsotg) /* DMA Descriptor */ dwc2_set_param_bool(hsotg, &p->g_dma_desc, false, "gadget-dma-desc", - p->g_dma, false, + !!hw->dma_desc_enable, false, !!hw->dma_desc_enable); } -- cgit v1.2.3 From 7931ec86c1b738e4e90e58c6d95e5f720d45ee56 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Tue, 20 Dec 2016 13:57:32 +0200 Subject: usb: dwc3: ep0: add dwc3_ep0_prepare_one_trb() For now this is just a cleanup patch, no functional changes. We will be using the new function to fix a bug introduced long ago by commit 0416e494ce7d ("usb: dwc3: ep0: correct cache sync issue in case of ep0_bounced") and further worsened by commit c0bd5456a470 ("usb: dwc3: ep0: handle non maxpacket aligned transfers > 512") Cc: Reported-by: Janusz Dziedzic Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/ep0.c | 26 ++++++++++++++++---------- 1 file changed, 16 insertions(+), 10 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 4878d187c7d4..06febd07ec4e 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -39,18 +39,13 @@ static void __dwc3_ep0_do_control_status(struct dwc3 *dwc, struct dwc3_ep *dep); static void __dwc3_ep0_do_control_data(struct dwc3 *dwc, struct dwc3_ep *dep, struct dwc3_request *req); -static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma, - u32 len, u32 type, bool chain) +static void dwc3_ep0_prepare_one_trb(struct dwc3 *dwc, u8 epnum, + dma_addr_t buf_dma, u32 len, u32 type, bool chain) { - struct dwc3_gadget_ep_cmd_params params; struct dwc3_trb *trb; struct dwc3_ep *dep; - int ret; - dep = dwc->eps[epnum]; - if (dep->flags & DWC3_EP_BUSY) - return 0; trb = &dwc->ep0_trb[dep->trb_enqueue]; @@ -71,15 +66,26 @@ static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma, trb->ctrl |= (DWC3_TRB_CTRL_IOC | DWC3_TRB_CTRL_LST); - if (chain) + trace_dwc3_prepare_trb(dep, trb); +} + +static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma, + u32 len, u32 type, bool chain) +{ + struct dwc3_gadget_ep_cmd_params params; + struct dwc3_ep *dep; + int ret; + + dep = dwc->eps[epnum]; + if (dep->flags & DWC3_EP_BUSY) return 0; + dwc3_ep0_prepare_one_trb(dwc, epnum, buf_dma, len, type, chain); + memset(¶ms, 0, sizeof(params)); params.param0 = upper_32_bits(dwc->ep0_trb_addr); params.param1 = lower_32_bits(dwc->ep0_trb_addr); - trace_dwc3_prepare_trb(dep, trb); - ret = dwc3_send_gadget_ep_cmd(dep, DWC3_DEPCMD_STARTTRANSFER, ¶ms); if (ret < 0) return ret; -- cgit v1.2.3 From 19ec31230eb3084431bc2e565fd085f79f564274 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Tue, 20 Dec 2016 14:08:48 +0200 Subject: usb: dwc3: ep0: explicitly call dwc3_ep0_prepare_one_trb() Let's call dwc3_ep0_prepare_one_trb() explicitly because there are occasions where we will need more than one TRB to handle an EP0 transfer. A follow-up patch will fix one bug related to multiple-TRB Data Phases when it comes to mapping/unmapping requests for DMA. Cc: Reported-by: Janusz Dziedzic Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/ep0.c | 28 +++++++++++++++------------- 1 file changed, 15 insertions(+), 13 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 06febd07ec4e..9bb1f8526f3e 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -69,8 +69,7 @@ static void dwc3_ep0_prepare_one_trb(struct dwc3 *dwc, u8 epnum, trace_dwc3_prepare_trb(dep, trb); } -static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma, - u32 len, u32 type, bool chain) +static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum) { struct dwc3_gadget_ep_cmd_params params; struct dwc3_ep *dep; @@ -80,8 +79,6 @@ static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma, if (dep->flags & DWC3_EP_BUSY) return 0; - dwc3_ep0_prepare_one_trb(dwc, epnum, buf_dma, len, type, chain); - memset(¶ms, 0, sizeof(params)); params.param0 = upper_32_bits(dwc->ep0_trb_addr); params.param1 = lower_32_bits(dwc->ep0_trb_addr); @@ -286,8 +283,9 @@ void dwc3_ep0_out_start(struct dwc3 *dwc) complete(&dwc->ep0_in_setup); - ret = dwc3_ep0_start_trans(dwc, 0, dwc->ctrl_req_addr, 8, + dwc3_ep0_prepare_one_trb(dwc, 0, dwc->ctrl_req_addr, 8, DWC3_TRBCTL_CONTROL_SETUP, false); + ret = dwc3_ep0_start_trans(dwc, 0); WARN_ON(ret < 0); } @@ -918,9 +916,9 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc, dwc->ep0_next_event = DWC3_EP0_COMPLETE; - ret = dwc3_ep0_start_trans(dwc, epnum, - dwc->ctrl_req_addr, 0, - DWC3_TRBCTL_CONTROL_DATA, false); + dwc3_ep0_prepare_one_trb(dwc, epnum, dwc->ctrl_req_addr, + 0, DWC3_TRBCTL_CONTROL_DATA, false); + ret = dwc3_ep0_start_trans(dwc, epnum); WARN_ON(ret < 0); } } @@ -999,9 +997,10 @@ static void __dwc3_ep0_do_control_data(struct dwc3 *dwc, req->direction = !!dep->number; if (req->request.length == 0) { - ret = dwc3_ep0_start_trans(dwc, dep->number, + dwc3_ep0_prepare_one_trb(dwc, dep->number, dwc->ctrl_req_addr, 0, DWC3_TRBCTL_CONTROL_DATA, false); + ret = dwc3_ep0_start_trans(dwc, dep->number); } else if (!IS_ALIGNED(req->request.length, dep->endpoint.maxpacket) && (dep->number == 0)) { u32 transfer_size = 0; @@ -1017,7 +1016,7 @@ static void __dwc3_ep0_do_control_data(struct dwc3 *dwc, if (req->request.length > DWC3_EP0_BOUNCE_SIZE) { transfer_size = ALIGN(req->request.length - maxpacket, maxpacket); - ret = dwc3_ep0_start_trans(dwc, dep->number, + dwc3_ep0_prepare_one_trb(dwc, dep->number, req->request.dma, transfer_size, DWC3_TRBCTL_CONTROL_DATA, @@ -1029,18 +1028,20 @@ static void __dwc3_ep0_do_control_data(struct dwc3 *dwc, dwc->ep0_bounced = true; - ret = dwc3_ep0_start_trans(dwc, dep->number, + dwc3_ep0_prepare_one_trb(dwc, dep->number, dwc->ep0_bounce_addr, transfer_size, DWC3_TRBCTL_CONTROL_DATA, false); + ret = dwc3_ep0_start_trans(dwc, dep->number); } else { ret = usb_gadget_map_request_by_dev(dwc->sysdev, &req->request, dep->number); if (ret) return; - ret = dwc3_ep0_start_trans(dwc, dep->number, req->request.dma, + dwc3_ep0_prepare_one_trb(dwc, dep->number, req->request.dma, req->request.length, DWC3_TRBCTL_CONTROL_DATA, false); + ret = dwc3_ep0_start_trans(dwc, dep->number); } WARN_ON(ret < 0); @@ -1054,8 +1055,9 @@ static int dwc3_ep0_start_control_status(struct dwc3_ep *dep) type = dwc->three_stage_setup ? DWC3_TRBCTL_CONTROL_STATUS3 : DWC3_TRBCTL_CONTROL_STATUS2; - return dwc3_ep0_start_trans(dwc, dep->number, + dwc3_ep0_prepare_one_trb(dwc, dep->number, dwc->ctrl_req_addr, 0, type, false); + return dwc3_ep0_start_trans(dwc, dep->number); } static void __dwc3_ep0_do_control_status(struct dwc3 *dwc, struct dwc3_ep *dep) -- cgit v1.2.3 From d62145929992f331fdde924d5963ab49588ccc7d Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Tue, 20 Dec 2016 14:14:40 +0200 Subject: usb: dwc3: gadget: always unmap EP0 requests commit 0416e494ce7d ("usb: dwc3: ep0: correct cache sync issue in case of ep0_bounced") introduced a bug where we would leak DMA resources which would cause us to starve the system of them resulting in failing DMA transfers. Fix the bug by making sure that we always unmap EP0 requests since those are *always* mapped. Fixes: 0416e494ce7d ("usb: dwc3: ep0: correct cache sync issue in case of ep0_bounced") Cc: Tested-by: Tomasz Medrek Reported-by: Janusz Dziedzic Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index efddaf5d11d1..0286e3141864 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -180,11 +180,11 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, if (req->request.status == -EINPROGRESS) req->request.status = status; - if (dwc->ep0_bounced && dep->number == 0) + if (dwc->ep0_bounced && dep->number <= 1) dwc->ep0_bounced = false; - else - usb_gadget_unmap_request_by_dev(dwc->sysdev, - &req->request, req->direction); + + usb_gadget_unmap_request_by_dev(dwc->sysdev, + &req->request, req->direction); trace_dwc3_gadget_giveback(req); -- cgit v1.2.3 From e71d363d9c611c99fb78f53bfee99616e7fe352c Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 23 Dec 2016 14:40:40 +0200 Subject: usb: dwc3: core: avoid Overflow events Now that we're handling so many transfers at a time and for some dwc3 revisions LPM events *must* be enabled, we can fall into a situation where too many events fire and we start receiving Overflow events. Let's do what XHCI does and allocate a full page for the Event Ring, this will avoid any future issues. Cc: # v4.9 Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index de5a8570be04..7bf8016e1182 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -45,9 +45,7 @@ #define DWC3_XHCI_RESOURCES_NUM 2 #define DWC3_SCRATCHBUF_SIZE 4096 /* each buffer is assumed to be 4KiB */ -#define DWC3_EVENT_SIZE 4 /* bytes */ -#define DWC3_EVENT_MAX_NUM 64 /* 2 events/endpoint */ -#define DWC3_EVENT_BUFFERS_SIZE (DWC3_EVENT_SIZE * DWC3_EVENT_MAX_NUM) +#define DWC3_EVENT_BUFFERS_SIZE 4096 #define DWC3_EVENT_TYPE_MASK 0xfe #define DWC3_EVENT_TYPE_DEV 0 -- cgit v1.2.3 From 51c1685d956221576e165dd88a20063b169bae5a Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Tue, 27 Dec 2016 13:13:42 +0200 Subject: usb: dwc3: pci: Fix dr_mode misspelling usb_get_dr_mode() expects the device-property to be spelled "dr_mode" not "dr-mode". Spelling it properly fixes the following warning showing up in dmesg: [ 8704.500545] dwc3 dwc3.2.auto: Configuration mismatch. dr_mode forced to gadget Signed-off-by: Hans de Goede --- drivers/usb/dwc3/dwc3-pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index 2b73339f286b..409d2eb848b5 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -115,7 +115,7 @@ static int dwc3_pci_quirks(struct dwc3_pci *dwc) int ret; struct property_entry properties[] = { - PROPERTY_ENTRY_STRING("dr-mode", "peripheral"), + PROPERTY_ENTRY_STRING("dr_mode", "peripheral"), { } }; -- cgit v1.2.3 From 7e4da3fcf7c9fe042f2f7cb7bf23861a899b4a8f Mon Sep 17 00:00:00 2001 From: Krzysztof Opasiak Date: Tue, 20 Dec 2016 19:52:16 +0100 Subject: usb: gadget: composite: Test get_alt() presence instead of set_alt() By convention (according to doc) if function does not provide get_alt() callback composite framework should assume that it has only altsetting 0 and should respond with error if host tries to set other one. After commit dd4dff8b035f ("USB: composite: Fix bug: should test set_alt function pointer before use it") we started checking set_alt() callback instead of get_alt(). This check is useless as we check if set_alt() is set inside usb_add_function() and fail if it's NULL. Let's fix this check and move comment about why we check the get method instead of set a little bit closer to prevent future false fixes. Fixes: dd4dff8b035f ("USB: composite: Fix bug: should test set_alt function pointer before use it") Cc: stable Signed-off-by: Krzysztof Opasiak Signed-off-by: Felipe Balbi --- drivers/usb/gadget/composite.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 41ab61f9b6e0..002822d98fda 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1694,9 +1694,7 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) value = min(w_length, (u16) 1); break; - /* function drivers must handle get/set altsetting; if there's - * no get() method, we know only altsetting zero works. - */ + /* function drivers must handle get/set altsetting */ case USB_REQ_SET_INTERFACE: if (ctrl->bRequestType != USB_RECIP_INTERFACE) goto unknown; @@ -1705,7 +1703,13 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) f = cdev->config->interface[intf]; if (!f) break; - if (w_value && !f->set_alt) + + /* + * If there's no get_alt() method, we know only altsetting zero + * works. There is no need to check if set_alt() is not NULL + * as we check this in usb_add_function(). + */ + if (w_value && !f->get_alt) break; value = f->set_alt(f, w_index, w_value); if (value == USB_GADGET_DELAYED_STATUS) { -- cgit v1.2.3 From 96a420d2d37cc019d0fbb95c9f0e965fa1080e1f Mon Sep 17 00:00:00 2001 From: Vincent Pelletier Date: Thu, 15 Dec 2016 12:47:41 +0000 Subject: usb: gadget: f_fs: Document eventfd effect on descriptor format. When FUNCTIONFS_EVENTFD flag is set, __ffs_data_got_descs reads a 32bits, little-endian value right after the fixed structure header, and passes it to eventfd_ctx_fdget. Document this. Also, rephrase a comment to be affirmative about the role of string descriptor at index 0. Ref: USB 2.0 spec paragraph "9.6.7 String", and also checked to still be current in USB 3.0 spec paragraph "9.6.9 String". Signed-off-by: Vincent Pelletier Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_fs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index aab3fc1dbb94..818f4997c1ac 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -2091,8 +2091,8 @@ static int __ffs_data_do_entity(enum ffs_entity_type type, case FFS_STRING: /* - * Strings are indexed from 1 (0 is magic ;) reserved - * for languages list or some such) + * Strings are indexed from 1 (0 is reserved + * for languages list) */ if (*valuep > helper->ffs->strings_count) helper->ffs->strings_count = *valuep; -- cgit v1.2.3 From 354bc45bf329494ef6051f3229ef50b9e2a7ea2a Mon Sep 17 00:00:00 2001 From: Vincent Pelletier Date: Thu, 15 Dec 2016 12:47:42 +0000 Subject: usb: gadget: f_fs: Fix ExtCompat descriptor validation Reserved1 is documented as expected to be set to 0, but this test fails when it it set to 0. Reverse the condition. Signed-off-by: Vincent Pelletier Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_fs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 818f4997c1ac..e4e4376de3ee 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -2252,7 +2252,7 @@ static int __ffs_data_do_os_desc(enum ffs_os_desc_type type, if (len < sizeof(*d) || d->bFirstInterfaceNumber >= ffs->interfaces_count || - !d->Reserved1) + d->Reserved1) return -EINVAL; for (i = 0; i < ARRAY_SIZE(d->Reserved2); ++i) if (d->Reserved2[i]) -- cgit v1.2.3 From bcdbeb844773333d2d1c08004f3b3e25921040e5 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 14 Dec 2016 14:55:56 -0500 Subject: USB: dummy-hcd: fix bug in stop_activity (handle ep0) The stop_activity() routine in dummy-hcd is supposed to unlink all active requests for every endpoint, among other things. But it doesn't handle ep0. As a result, fuzz testing can generate a WARNING like the following: WARNING: CPU: 0 PID: 4410 at drivers/usb/gadget/udc/dummy_hcd.c:672 dummy_free_request+0x153/0x170 Modules linked in: CPU: 0 PID: 4410 Comm: syz-executor Not tainted 4.9.0-rc7+ #32 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 ffff88006a64ed10 ffffffff81f96b8a ffffffff41b58ab3 1ffff1000d4c9d35 ffffed000d4c9d2d ffff880065f8ac00 0000000041b58ab3 ffffffff8598b510 ffffffff81f968f8 0000000041b58ab3 ffffffff859410e0 ffffffff813f0590 Call Trace: [< inline >] __dump_stack lib/dump_stack.c:15 [] dump_stack+0x292/0x398 lib/dump_stack.c:51 [] __warn+0x19f/0x1e0 kernel/panic.c:550 [] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585 [] dummy_free_request+0x153/0x170 drivers/usb/gadget/udc/dummy_hcd.c:672 [] usb_ep_free_request+0xc0/0x420 drivers/usb/gadget/udc/core.c:195 [] gadgetfs_unbind+0x131/0x190 drivers/usb/gadget/legacy/inode.c:1612 [] usb_gadget_remove_driver+0x10f/0x2b0 drivers/usb/gadget/udc/core.c:1228 [] usb_gadget_unregister_driver+0x154/0x240 drivers/usb/gadget/udc/core.c:1357 This patch fixes the problem by iterating over all the endpoints in the driver's ep array instead of iterating over the gadget's ep_list, which explicitly leaves out ep0. Signed-off-by: Alan Stern Reported-by: Andrey Konovalov CC: Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/dummy_hcd.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index 02b14e91ae6c..c60abe3a68f9 100644 --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -330,7 +330,7 @@ static void nuke(struct dummy *dum, struct dummy_ep *ep) /* caller must hold lock */ static void stop_activity(struct dummy *dum) { - struct dummy_ep *ep; + int i; /* prevent any more requests */ dum->address = 0; @@ -338,8 +338,8 @@ static void stop_activity(struct dummy *dum) /* The timer is left running so that outstanding URBs can fail */ /* nuke any pending requests first, so driver i/o is quiesced */ - list_for_each_entry(ep, &dum->gadget.ep_list, ep.ep_list) - nuke(dum, ep); + for (i = 0; i < DUMMY_ENDPOINTS; ++i) + nuke(dum, &dum->ep[i]); /* driver now does any non-usb quiescing necessary */ } -- cgit v1.2.3 From 0994b0a257557e18ee8f0b7c5f0f73fe2b54eec1 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 6 Dec 2016 08:36:29 +0100 Subject: usb: gadgetfs: restrict upper bound on device configuration size Andrey Konovalov reported that we were not properly checking the upper limit before of a device configuration size before calling memdup_user(), which could cause some problems. So set the upper limit to PAGE_SIZE * 4, which should be good enough for all devices. Reported-by: Andrey Konovalov Cc: stable Signed-off-by: Greg Kroah-Hartman Signed-off-by: Felipe Balbi --- drivers/usb/gadget/legacy/inode.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c index e8f4102d19df..48f1409b438a 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -1762,7 +1762,8 @@ dev_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) } spin_unlock_irq(&dev->lock); - if (len < (USB_DT_CONFIG_SIZE + USB_DT_DEVICE_SIZE + 4)) + if ((len < (USB_DT_CONFIG_SIZE + USB_DT_DEVICE_SIZE + 4)) || + (len > PAGE_SIZE * 4)) return -EINVAL; /* we might need to change message format someday */ -- cgit v1.2.3 From d7fd41c6dbcc547578a8a56cc52d6f2d36e505bc Mon Sep 17 00:00:00 2001 From: Janusz Dziedzic Date: Thu, 8 Dec 2016 10:57:34 +0100 Subject: usb: dwc3: skip interrupt when ep disabled In case EP disabled pass only EPCPLT command to be handled. In other case we could hit Bug like below. BUG: unable to handle kernel NULL pointer dereference at 0000000000000003 IP: [] dwc3_thread_interrupt+0x11c8/0x1790 while dep->endpoint.desc is NULL. Signed-off-by: Janusz Dziedzic Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 0286e3141864..725b13ad220d 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2232,9 +2232,14 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc, dep = dwc->eps[epnum]; - if (!(dep->flags & DWC3_EP_ENABLED) && - !(dep->flags & DWC3_EP_END_TRANSFER_PENDING)) - return; + if (!(dep->flags & DWC3_EP_ENABLED)) { + if (!(dep->flags & DWC3_EP_END_TRANSFER_PENDING)) + return; + + /* Handle only EPCMDCMPLT when EP disabled */ + if (event->endpoint_event != DWC3_DEPEVT_EPCMDCMPLT) + return; + } if (epnum == 0 || epnum == 1) { dwc3_ep0_interrupt(dwc, event); -- cgit v1.2.3 From b3ce3ce02d146841af012d08506b4071db8ffde3 Mon Sep 17 00:00:00 2001 From: Baolin Wang Date: Thu, 8 Dec 2016 19:55:22 +0800 Subject: usb: gadget: f_fs: Fix possibe deadlock When system try to close /dev/usb-ffs/adb/ep0 on one core, at the same time another core try to attach new UDC, which will cause deadlock as below scenario. Thus we should release ffs lock before issuing unregister_gadget_item(). [ 52.642225] c1 ====================================================== [ 52.642228] c1 [ INFO: possible circular locking dependency detected ] [ 52.642236] c1 4.4.6+ #1 Tainted: G W O [ 52.642241] c1 ------------------------------------------------------- [ 52.642245] c1 usb ffs open/2808 is trying to acquire lock: [ 52.642270] c0 (udc_lock){+.+.+.}, at: [] usb_gadget_unregister_driver+0x3c/0xc8 [ 52.642272] c1 but task is already holding lock: [ 52.642283] c0 (ffs_lock){+.+.+.}, at: [] ffs_data_clear+0x30/0x140 [ 52.642285] c1 which lock already depends on the new lock. [ 52.642287] c1 the existing dependency chain (in reverse order) is: [ 52.642295] c0 -> #1 (ffs_lock){+.+.+.}: [ 52.642307] c0 [] __lock_acquire+0x20f0/0x2238 [ 52.642314] c0 [] lock_acquire+0xe4/0x298 [ 52.642322] c0 [] mutex_lock_nested+0x7c/0x3cc [ 52.642328] c0 [] ffs_func_bind+0x504/0x6e8 [ 52.642334] c0 [] usb_add_function+0x84/0x184 [ 52.642340] c0 [] configfs_composite_bind+0x264/0x39c [ 52.642346] c0 [] udc_bind_to_driver+0x58/0x11c [ 52.642352] c0 [] usb_udc_attach_driver+0x90/0xc8 [ 52.642358] c0 [] gadget_dev_desc_UDC_store+0xd4/0x128 [ 52.642369] c0 [] configfs_write_file+0xd0/0x13c [ 52.642376] c0 [] vfs_write+0xb8/0x214 [ 52.642381] c0 [] SyS_write+0x54/0xb0 [ 52.642388] c0 [] el0_svc_naked+0x24/0x28 [ 52.642395] c0 -> #0 (udc_lock){+.+.+.}: [ 52.642401] c0 [] print_circular_bug+0x84/0x2e4 [ 52.642407] c0 [] __lock_acquire+0x2138/0x2238 [ 52.642412] c0 [] lock_acquire+0xe4/0x298 [ 52.642420] c0 [] mutex_lock_nested+0x7c/0x3cc [ 52.642427] c0 [] usb_gadget_unregister_driver+0x3c/0xc8 [ 52.642432] c0 [] unregister_gadget_item+0x28/0x44 [ 52.642439] c0 [] ffs_data_clear+0x138/0x140 [ 52.642444] c0 [] ffs_data_reset+0x20/0x6c [ 52.642450] c0 [] ffs_data_closed+0xac/0x12c [ 52.642454] c0 [] ffs_ep0_release+0x20/0x2c [ 52.642460] c0 [] __fput+0xb0/0x1f4 [ 52.642466] c0 [] ____fput+0x20/0x2c [ 52.642473] c0 [] task_work_run+0xb4/0xe8 [ 52.642482] c0 [] do_exit+0x360/0xb9c [ 52.642487] c0 [] do_group_exit+0x4c/0xb0 [ 52.642494] c0 [] get_signal+0x380/0x89c [ 52.642501] c0 [] do_signal+0x154/0x518 [ 52.642507] c0 [] do_notify_resume+0x70/0x78 [ 52.642512] c0 [] work_pending+0x1c/0x20 [ 52.642514] c1 other info that might help us debug this: [ 52.642517] c1 Possible unsafe locking scenario: [ 52.642518] c1 CPU0 CPU1 [ 52.642520] c1 ---- ---- [ 52.642525] c0 lock(ffs_lock); [ 52.642529] c0 lock(udc_lock); [ 52.642533] c0 lock(ffs_lock); [ 52.642537] c0 lock(udc_lock); [ 52.642539] c1 *** DEADLOCK *** [ 52.642543] c1 1 lock held by usb ffs open/2808: [ 52.642555] c0 #0: (ffs_lock){+.+.+.}, at: [] ffs_data_clear+0x30/0x140 [ 52.642557] c1 stack backtrace: [ 52.642563] c1 CPU: 1 PID: 2808 Comm: usb ffs open Tainted: G [ 52.642565] c1 Hardware name: Spreadtrum SP9860g Board (DT) [ 52.642568] c1 Call trace: [ 52.642573] c1 [] dump_backtrace+0x0/0x170 [ 52.642577] c1 [] show_stack+0x20/0x28 [ 52.642583] c1 [] dump_stack+0xa8/0xe0 [ 52.642587] c1 [] print_circular_bug+0x1fc/0x2e4 [ 52.642591] c1 [] __lock_acquire+0x2138/0x2238 [ 52.642595] c1 [] lock_acquire+0xe4/0x298 [ 52.642599] c1 [] mutex_lock_nested+0x7c/0x3cc [ 52.642604] c1 [] usb_gadget_unregister_driver+0x3c/0xc8 [ 52.642608] c1 [] unregister_gadget_item+0x28/0x44 [ 52.642613] c1 [] ffs_data_clear+0x138/0x140 [ 52.642618] c1 [] ffs_data_reset+0x20/0x6c [ 52.642621] c1 [] ffs_data_closed+0xac/0x12c [ 52.642625] c1 [] ffs_ep0_release+0x20/0x2c [ 52.642629] c1 [] __fput+0xb0/0x1f4 [ 52.642633] c1 [] ____fput+0x20/0x2c [ 52.642636] c1 [] task_work_run+0xb4/0xe8 [ 52.642640] c1 [] do_exit+0x360/0xb9c [ 52.642644] c1 [] do_group_exit+0x4c/0xb0 [ 52.642647] c1 [] get_signal+0x380/0x89c [ 52.642651] c1 [] do_signal+0x154/0x518 [ 52.642656] c1 [] do_notify_resume+0x70/0x78 [ 52.642659] c1 [] work_pending+0x1c/0x20 Acked-by: Michal Nazarewicz Signed-off-by: Baolin Wang Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_fs.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index e4e4376de3ee..5e746adc8a2d 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -3666,6 +3666,7 @@ static void ffs_closed(struct ffs_data *ffs) { struct ffs_dev *ffs_obj; struct f_fs_opts *opts; + struct config_item *ci; ENTER(); ffs_dev_lock(); @@ -3689,8 +3690,11 @@ static void ffs_closed(struct ffs_data *ffs) || !atomic_read(&opts->func_inst.group.cg_item.ci_kref.refcount)) goto done; - unregister_gadget_item(ffs_obj->opts-> - func_inst.group.cg_item.ci_parent->ci_parent); + ci = opts->func_inst.group.cg_item.ci_parent->ci_parent; + ffs_dev_unlock(); + + unregister_gadget_item(ci); + return; done: ffs_dev_unlock(); } -- cgit v1.2.3 From faab50984fe6636e616c7cc3d30308ba391d36fd Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 9 Dec 2016 15:17:46 -0500 Subject: USB: gadgetfs: fix unbounded memory allocation bug Andrey Konovalov reports that fuzz testing with syzkaller causes a KASAN warning in gadgetfs: BUG: KASAN: slab-out-of-bounds in dev_config+0x86f/0x1190 at addr ffff88003c47e160 Write of size 65537 by task syz-executor0/6356 CPU: 3 PID: 6356 Comm: syz-executor0 Not tainted 4.9.0-rc7+ #19 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 ffff88003c107ad8 ffffffff81f96aba ffffffff3dc11ef0 1ffff10007820eee ffffed0007820ee6 ffff88003dc11f00 0000000041b58ab3 ffffffff8598b4c8 ffffffff81f96828 ffffffff813fb4a0 ffff88003b6eadc0 ffff88003c107738 Call Trace: [< inline >] __dump_stack lib/dump_stack.c:15 [] dump_stack+0x292/0x398 lib/dump_stack.c:51 [] kasan_object_err+0x1c/0x70 mm/kasan/report.c:159 [< inline >] print_address_description mm/kasan/report.c:197 [] kasan_report_error+0x1f0/0x4e0 mm/kasan/report.c:286 [] kasan_report+0x35/0x40 mm/kasan/report.c:306 [< inline >] check_memory_region_inline mm/kasan/kasan.c:308 [] check_memory_region+0x139/0x190 mm/kasan/kasan.c:315 [] kasan_check_write+0x14/0x20 mm/kasan/kasan.c:326 [< inline >] copy_from_user arch/x86/include/asm/uaccess.h:689 [< inline >] ep0_write drivers/usb/gadget/legacy/inode.c:1135 [] dev_config+0x86f/0x1190 drivers/usb/gadget/legacy/inode.c:1759 [] __vfs_write+0x5d5/0x760 fs/read_write.c:510 [] vfs_write+0x170/0x4e0 fs/read_write.c:560 [< inline >] SYSC_write fs/read_write.c:607 [] SyS_write+0xfb/0x230 fs/read_write.c:599 [] entry_SYSCALL_64_fastpath+0x1f/0xc2 Indeed, there is a comment saying that the value of len is restricted to a 16-bit integer, but the code doesn't actually do this. This patch fixes the warning. It replaces the comment with a computation that forces the amount of data copied from the user in ep0_write() to be no larger than the wLength size for the control transfer, which is a 16-bit quantity. Signed-off-by: Alan Stern Reported-by: Andrey Konovalov Tested-by: Andrey Konovalov CC: Signed-off-by: Felipe Balbi --- drivers/usb/gadget/legacy/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c index 48f1409b438a..01ed3bc0c3c8 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -1126,7 +1126,7 @@ ep0_write (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) /* data and/or status stage for control request */ } else if (dev->state == STATE_DEV_SETUP) { - /* IN DATA+STATUS caller makes len <= wLength */ + len = min_t(size_t, len, dev->setup_wLength); if (dev->setup_in) { retval = setup_req (dev->gadget->ep0, dev->req, len); if (retval == 0) { -- cgit v1.2.3 From add333a81a16abbd4f106266a2553677a165725f Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 9 Dec 2016 15:18:43 -0500 Subject: USB: gadgetfs: fix use-after-free bug Andrey Konovalov reports that fuzz testing with syzkaller causes a KASAN use-after-free bug report in gadgetfs: BUG: KASAN: use-after-free in gadgetfs_setup+0x208a/0x20e0 at addr ffff88003dfe5bf2 Read of size 2 by task syz-executor0/22994 CPU: 3 PID: 22994 Comm: syz-executor0 Not tainted 4.9.0-rc7+ #16 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 ffff88006df06a18 ffffffff81f96aba ffffffffe0528500 1ffff1000dbe0cd6 ffffed000dbe0cce ffff88006df068f0 0000000041b58ab3 ffffffff8598b4c8 ffffffff81f96828 1ffff1000dbe0ccd ffff88006df06708 ffff88006df06748 Call Trace: [ 201.343209] [< inline >] __dump_stack lib/dump_stack.c:15 [ 201.343209] [] dump_stack+0x292/0x398 lib/dump_stack.c:51 [] kasan_object_err+0x1c/0x70 mm/kasan/report.c:159 [< inline >] print_address_description mm/kasan/report.c:197 [] kasan_report_error+0x1f0/0x4e0 mm/kasan/report.c:286 [< inline >] kasan_report mm/kasan/report.c:306 [] __asan_report_load_n_noabort+0x3a/0x40 mm/kasan/report.c:337 [< inline >] config_buf drivers/usb/gadget/legacy/inode.c:1298 [] gadgetfs_setup+0x208a/0x20e0 drivers/usb/gadget/legacy/inode.c:1368 [] dummy_timer+0x11f0/0x36d0 drivers/usb/gadget/udc/dummy_hcd.c:1858 [] call_timer_fn+0x241/0x800 kernel/time/timer.c:1308 [< inline >] expire_timers kernel/time/timer.c:1348 [] __run_timers+0xa06/0xec0 kernel/time/timer.c:1641 [] run_timer_softirq+0x21/0x80 kernel/time/timer.c:1654 [] __do_softirq+0x2fb/0xb63 kernel/softirq.c:284 The cause of the bug is subtle. The dev_config() routine gets called twice by the fuzzer. The first time, the user data contains both a full-speed configuration descriptor and a high-speed config descriptor, causing dev->hs_config to be set. But it also contains an invalid device descriptor, so the buffer containing the descriptors is deallocated and dev_config() returns an error. The second time dev_config() is called, the user data contains only a full-speed config descriptor. But dev->hs_config still has the stale pointer remaining from the first call, causing the routine to think that there is a valid high-speed config. Later on, when the driver dereferences the stale pointer to copy that descriptor, we get a use-after-free access. The fix is simple: Clear dev->hs_config if the passed-in data does not contain a high-speed config descriptor. Signed-off-by: Alan Stern Reported-by: Andrey Konovalov Tested-by: Andrey Konovalov CC: Signed-off-by: Felipe Balbi --- drivers/usb/gadget/legacy/inode.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c index 01ed3bc0c3c8..f1ca33942607 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -1800,6 +1800,8 @@ dev_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) goto fail; kbuf += total; length -= total; + } else { + dev->hs_config = NULL; } /* could support multiple configs, using another encoding! */ -- cgit v1.2.3 From 1c069b057dcf64fada952eaa868d35f02bb0cfc2 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 9 Dec 2016 15:24:24 -0500 Subject: USB: gadgetfs: fix checks of wTotalLength in config descriptors Andrey Konovalov's fuzz testing of gadgetfs showed that we should improve the driver's checks for valid configuration descriptors passed in by the user. In particular, the driver needs to verify that the wTotalLength value in the descriptor is not too short (smaller than USB_DT_CONFIG_SIZE). And the check for whether wTotalLength is too large has to be changed, because the driver assumes there is always enough room remaining in the buffer to hold a device descriptor (at least USB_DT_DEVICE_SIZE bytes). This patch adds the additional check and fixes the existing check. It may do a little more than strictly necessary, but one extra check won't hurt. Signed-off-by: Alan Stern CC: Andrey Konovalov CC: Signed-off-by: Felipe Balbi --- drivers/usb/gadget/legacy/inode.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c index f1ca33942607..08e5ecc05079 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -1734,10 +1734,12 @@ static struct usb_gadget_driver gadgetfs_driver = { * such as configuration notifications. */ -static int is_valid_config (struct usb_config_descriptor *config) +static int is_valid_config(struct usb_config_descriptor *config, + unsigned int total) { return config->bDescriptorType == USB_DT_CONFIG && config->bLength == USB_DT_CONFIG_SIZE + && total >= USB_DT_CONFIG_SIZE && config->bConfigurationValue != 0 && (config->bmAttributes & USB_CONFIG_ATT_ONE) != 0 && (config->bmAttributes & USB_CONFIG_ATT_WAKEUP) == 0; @@ -1787,7 +1789,8 @@ dev_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) /* full or low speed config */ dev->config = (void *) kbuf; total = le16_to_cpu(dev->config->wTotalLength); - if (!is_valid_config (dev->config) || total >= length) + if (!is_valid_config(dev->config, total) || + total > length - USB_DT_DEVICE_SIZE) goto fail; kbuf += total; length -= total; @@ -1796,7 +1799,8 @@ dev_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) if (kbuf [1] == USB_DT_CONFIG) { dev->hs_config = (void *) kbuf; total = le16_to_cpu(dev->hs_config->wTotalLength); - if (!is_valid_config (dev->hs_config) || total >= length) + if (!is_valid_config(dev->hs_config, total) || + total > length - USB_DT_DEVICE_SIZE) goto fail; kbuf += total; length -= total; -- cgit v1.2.3 From 890e6c236dcda6d45c5f0bdd23665636376f6831 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 9 Dec 2016 15:25:15 -0500 Subject: USB: gadgetfs: remove unnecessary assignment The dev_config() routine in gadgetfs has a check that dev->dev->bNumConfigurations is equal to 1, and then contains a redundant line of code setting the value to 1. This patch removes the unnecessary assignment. Signed-off-by: Alan Stern Signed-off-by: Felipe Balbi --- drivers/usb/gadget/legacy/inode.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c index 08e5ecc05079..6bde4396927c 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -1818,7 +1818,6 @@ dev_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) || dev->dev->bDescriptorType != USB_DT_DEVICE || dev->dev->bNumConfigurations != 1) goto fail; - dev->dev->bNumConfigurations = 1; dev->dev->bcdUSB = cpu_to_le16 (0x0200); /* triggers gadgetfs_bind(); then we can enumerate. */ -- cgit v1.2.3 From 12a7f17fac5b370bec87259e4c718faf563ce900 Mon Sep 17 00:00:00 2001 From: Grygorii Strashko Date: Mon, 12 Dec 2016 13:37:52 -0600 Subject: usb: dwc3: omap: fix race of pm runtime with irq handler in probe Now races can happen between interrupt handler execution and PM runtime in error handling code path in probe and in dwc3_omap_remove() which will lead to system crash: in probe: ... err1: pm_runtime_put_sync(dev); ^^ PM runtime can race with IRQ handler when deferred probing happening due to extcon pm_runtime_disable(dev); return ret; in dwc3_omap_remove: ... dwc3_omap_disable_irqs(omap); ^^ IRQs are disabled in HW, but handler may still run of_platform_depopulate(omap->dev); pm_runtime_put_sync(&pdev->dev); ^^ PM runtime can race with IRQ handler pm_runtime_disable(&pdev->dev); return 0; So, OMAP DWC3 IRQ need to be disabled before calling pm_runtime_put() in probe and in dwc3_omap_remove(). Acked-by: Tony Lindgren Signed-off-by: Grygorii Strashko Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-omap.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 29e80cc9b634..eb1b9cb3f9d1 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -510,7 +511,7 @@ static int dwc3_omap_probe(struct platform_device *pdev) /* check the DMA Status */ reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG); - + irq_set_status_flags(omap->irq, IRQ_NOAUTOEN); ret = devm_request_threaded_irq(dev, omap->irq, dwc3_omap_interrupt, dwc3_omap_interrupt_thread, IRQF_SHARED, "dwc3-omap", omap); @@ -531,7 +532,7 @@ static int dwc3_omap_probe(struct platform_device *pdev) } dwc3_omap_enable_irqs(omap); - + enable_irq(omap->irq); return 0; err2: @@ -552,6 +553,7 @@ static int dwc3_omap_remove(struct platform_device *pdev) extcon_unregister_notifier(omap->edev, EXTCON_USB, &omap->vbus_nb); extcon_unregister_notifier(omap->edev, EXTCON_USB_HOST, &omap->id_nb); dwc3_omap_disable_irqs(omap); + disable_irq(omap->irq); of_platform_depopulate(omap->dev); pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); -- cgit v1.2.3 From 0eae2fde164caaa013a3f7341fd3e7e36e8e2865 Mon Sep 17 00:00:00 2001 From: John Youn Date: Mon, 28 Nov 2016 16:30:58 -0800 Subject: usb: dwc3: pci: Add "linux,sysdev_is_parent" property Calling platform_device_add_properties() replaces existing properties so the "linux,sysdev_is_parent" property doesn't get set. Add this property to each platform. Fixes: d64ff406e51e ("usb: dwc3: use bus->sysdev for DMA configuration") Signed-off-by: John Youn Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-pci.c | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index 409d2eb848b5..b01156343513 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -73,16 +73,6 @@ static int dwc3_pci_quirks(struct dwc3_pci *dwc) { struct platform_device *dwc3 = dwc->dwc3; struct pci_dev *pdev = dwc->pci; - int ret; - - struct property_entry sysdev_property[] = { - PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"), - { }, - }; - - ret = platform_device_add_properties(dwc3, sysdev_property); - if (ret) - return ret; if (pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == PCI_DEVICE_ID_AMD_NL_USB) { @@ -105,6 +95,7 @@ static int dwc3_pci_quirks(struct dwc3_pci *dwc) PROPERTY_ENTRY_BOOL("snps,disable_scramble_quirk"), PROPERTY_ENTRY_BOOL("snps,dis_u3_susphy_quirk"), PROPERTY_ENTRY_BOOL("snps,dis_u2_susphy_quirk"), + PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"), { }, }; @@ -116,6 +107,7 @@ static int dwc3_pci_quirks(struct dwc3_pci *dwc) struct property_entry properties[] = { PROPERTY_ENTRY_STRING("dr_mode", "peripheral"), + PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"), { } }; @@ -167,6 +159,7 @@ static int dwc3_pci_quirks(struct dwc3_pci *dwc) PROPERTY_ENTRY_BOOL("snps,usb3_lpm_capable"), PROPERTY_ENTRY_BOOL("snps,has-lpm-erratum"), PROPERTY_ENTRY_BOOL("snps,dis_enblslpm_quirk"), + PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"), { }, }; -- cgit v1.2.3 From 86e881e7d769f40bd5ed08677e503bc15d89dec6 Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Thu, 1 Dec 2016 10:02:11 +0100 Subject: usb: dwc2: fix flags for DMA descriptor allocation in dwc2_hsotg_ep_enable dwc2_hsotg_ep_enable can be called from interrupt context, so all allocations should be done with GFP_ATOMIC flags. This fixes following issue on ARM architecture: [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [] (show_stack) from [] (dump_stack+0x74/0x94) [] (dump_stack) from [] (__warn+0xd4/0x100) [] (__warn) from [] (warn_slowpath_null+0x20/0x28) [] (warn_slowpath_null) from [] (smp_call_function_many+0xcc/0x2a4) [] (smp_call_function_many) from [] (on_each_cpu_mask+0x38/0xa8) [] (on_each_cpu_mask) from [] (start_isolate_page_range+0x134/0x1b8) [] (start_isolate_page_range) from [] (alloc_contig_range+0xac/0x2f8) [] (alloc_contig_range) from [] (cma_alloc+0xe0/0x1a8) [] (cma_alloc) from [] (__alloc_from_contiguous+0x38/0xe0) [] (__alloc_from_contiguous) from [] (cma_allocator_alloc+0x30/0x38) [] (cma_allocator_alloc) from [] (__dma_alloc+0x1c0/0x2c8) [] (__dma_alloc) from [] (arm_dma_alloc+0x3c/0x48) [] (arm_dma_alloc) from [] (dwc2_hsotg_ep_enable+0xec/0x46c) [] (dwc2_hsotg_ep_enable) from [] (usb_ep_enable+0x2c/0x3c) [] (usb_ep_enable) from [] (ecm_set_alt+0xa8/0x154) [] (ecm_set_alt) from [] (composite_setup+0xd74/0x1540) [] (composite_setup) from [] (dwc2_hsotg_complete_setup+0xb8/0x370) [] (dwc2_hsotg_complete_setup) from [] (usb_gadget_giveback_request+0xc/0x10) [] (usb_gadget_giveback_request) from [] (dwc2_hsotg_complete_request+0x78/0x128) [] (dwc2_hsotg_complete_request) from [] (dwc2_hsotg_epint+0x69c/0x81c) [] (dwc2_hsotg_epint) from [] (dwc2_hsotg_irq+0xfc/0x748) [] (dwc2_hsotg_irq) from [] (__handle_irq_event_percpu+0x58/0x140) [] (__handle_irq_event_percpu) from [] (handle_irq_event_percpu+0x1c/0x58) [] (handle_irq_event_percpu) from [] (handle_irq_event+0x38/0x5c) [] (handle_irq_event) from [] (handle_fasteoi_irq+0xc4/0x19c) [] (handle_fasteoi_irq) from [] (generic_handle_irq+0x18/0x28) [] (generic_handle_irq) from [] (__handle_domain_irq+0x6c/0xe4) [] (__handle_domain_irq) from [] (gic_handle_irq+0x50/0x9c) [] (gic_handle_irq) from [] (__irq_svc+0x6c/0xa8) Fixes: 5f54c54b0ba83 ("usb: dwc2: gadget: Add DDMA chain pointers to dwc2_hsotg_ep structure") Acked-by: John Youn Signed-off-by: Marek Szyprowski Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index b95930f20d90..c55db4aa54d6 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3753,7 +3753,7 @@ static int dwc2_hsotg_ep_enable(struct usb_ep *ep, hs_ep->desc_list = dma_alloc_coherent(hsotg->dev, MAX_DMA_DESC_NUM_GENERIC * sizeof(struct dwc2_dma_desc), - &hs_ep->desc_list_dma, GFP_KERNEL); + &hs_ep->desc_list_dma, GFP_ATOMIC); if (!hs_ep->desc_list) { ret = -ENOMEM; goto error2; -- cgit v1.2.3 From 8f8983a5683623b62b339d159573f95a1fce44f3 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Fri, 1 Apr 2016 17:13:12 +0300 Subject: usb: dwc3: pci: add Intel Gemini Lake PCI ID Intel Gemini Lake SoC has the same DWC3 than Broxton. Add the new ID to the supported Devices. Signed-off-by: Heikki Krogerus Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-pci.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index b01156343513..cce0a220b6b0 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -38,6 +38,7 @@ #define PCI_DEVICE_ID_INTEL_BXT_M 0x1aaa #define PCI_DEVICE_ID_INTEL_APL 0x5aaa #define PCI_DEVICE_ID_INTEL_KBP 0xa2b0 +#define PCI_DEVICE_ID_INTEL_GLK 0x31aa #define PCI_INTEL_BXT_DSM_UUID "732b85d5-b7a7-4a1b-9ba0-4bbd00ffd511" #define PCI_INTEL_BXT_FUNC_PMU_PWR 4 @@ -267,6 +268,7 @@ static const struct pci_device_id dwc3_pci_id_table[] = { { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT_M), }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_KBP), }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_GLK), }, { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), }, { } /* Terminating Entry */ }; -- cgit v1.2.3 From 7b01738112608ce47083178ae2b9ebadf02d32cc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Felix=20H=C3=A4dicke?= Date: Thu, 29 Dec 2016 23:02:11 +0100 Subject: usb: gadget: udc: core: fix return code of usb_gadget_probe_driver() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This fixes a regression which was introduced by commit f1bddbb, by reverting a small fragment of commit 855ed04. If the following conditions were met, usb_gadget_probe_driver() returned 0, although the call was unsuccessful: 1. A particular UDC was specified by thge gadget driver (using member "udc_name" of struct usb_gadget_driver). 2. The UDC with this name is available. 3. Another gadget driver is already bound to this gadget. 4. The gadget driver has the "match_existing_only" flag set. In this case, the return code variable "ret" is set to 0, the return code of a strcmp() call (to check for the second condition). This also fixes an oops which could occur in the following scenario: 1. Two usb gadget instances were configured using configfs. 2. The first gadget configuration was bound to a UDC (using the configfs attribute "UDC"). 3. It was tried to bind the second gadget configuration to the same UDC in the same way. This operation was then wrongly reported as being successful. 4. The second gadget configuration's "UDC" attribute is cleared, to unbind the (not really bound) second gadget configuration from the UDC. ] __list_del_entry+0x29/0xc0 PGD 41b4c5067 PUD 41a598067 PMD 0 Oops: 0000 [#1] SMP Modules linked in: cdc_acm usb_f_fs usb_f_serial usb_f_acm u_serial libcomposite configfs dummy_hcd bnep intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm snd_hda_codec_hdmi irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd snd_hda_codec_realtek snd_hda_codec_generic serio_raw uvcvideo videobuf2_vmalloc btusb snd_usb_audio snd_hda_intel videobuf2_memops btrtl snd_hda_codec snd_hda_core snd_usbmidi_lib btbcm videobuf2_v4l2 btintel snd_hwdep videobuf2_core snd_seq_midi bluetooth snd_seq_midi_event videodev xpad efi_pstore snd_pcm_oss rfkill joydev media crc16 ff_memless snd_mixer_oss snd_rawmidi nls_ascii snd_pcm snd_seq snd_seq_device nls_cp437 mei_me snd_timer vfat sg udc_core lpc_ich fat efivars mfd_core mei snd soundcore battery nuvoton_cir rc_core evdev intel_smartconnect ie31200_edac edac_core shpchp tpm_tis tpm_tis_core tpm parport_pc ppdev lp parport efivarfs autofs4 btrfs xor raid6_pq hid_logitech_hidpp hid_logitech_dj hid_generic usbhid hid uas usb_storage sr_mod cdrom sd_mod ahci libahci nouveau i915 crc32c_intel i2c_algo_bit psmouse ttm xhci_pci libata scsi_mod ehci_pci drm_kms_helper xhci_hcd ehci_hcd r8169 mii usbcore drm nvme nvme_core fjes button [last unloaded: net2280] CPU: 5 PID: 829 Comm: bash Not tainted 4.9.0-rc7 #1 Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./Z77 Extreme3, BIOS P1.50 07/11/2013 task: ffff880419ce4040 task.stack: ffffc90002ed4000 RIP: 0010:[] [] __list_del_entry+0x29/0xc0 RSP: 0018:ffffc90002ed7d68 EFLAGS: 00010207 RAX: 0000000000000000 RBX: ffff88041787ec30 RCX: dead000000000200 RDX: 0000000000000000 RSI: ffff880417482002 RDI: ffff88041787ec30 RBP: ffffc90002ed7d68 R08: 0000000000000000 R09: 0000000000000010 R10: 0000000000000000 R11: ffff880419ce4040 R12: ffff88041787eb68 R13: ffff88041787eaa8 R14: ffff88041560a2c0 R15: 0000000000000001 FS: 00007fe4e49b8700(0000) GS:ffff88042f340000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000041b4c4000 CR4: 00000000001406e0 Stack: ffffc90002ed7d80 ffffffff94f5e68d ffffffffc0ae5ef0 ffffc90002ed7da0 ffffffffc0ae22aa ffff88041787e800 ffff88041787e800 ffffc90002ed7dc0 ffffffffc0d7a727 ffffffff952273fa ffff88041aba5760 ffffc90002ed7df8 Call Trace: [] list_del+0xd/0x30 [] usb_gadget_unregister_driver+0xaa/0xc0 [udc_core] [] unregister_gadget+0x27/0x60 [libcomposite] [] ? mutex_lock+0x1a/0x30 [] gadget_dev_desc_UDC_store+0x88/0xe0 [libcomposite] [] configfs_write_file+0xa0/0x100 [configfs] [] __vfs_write+0x37/0x160 [] ? __fd_install+0x30/0xd0 [] ? _raw_spin_unlock+0xe/0x10 [] vfs_write+0xb8/0x1b0 [] SyS_write+0x58/0xc0 [] ? __close_fd+0x94/0xc0 [] entry_SYSCALL_64_fastpath+0x1e/0xad Code: 66 90 55 48 8b 07 48 b9 00 01 00 00 00 00 ad de 48 8b 57 08 48 89 e5 48 39 c8 74 29 48 b9 00 02 00 00 00 00 ad de 48 39 ca 74 3a <4c> 8b 02 4c 39 c7 75 52 4c 8b 40 08 4c 39 c7 75 66 48 89 50 08 RIP [] __list_del_entry+0x29/0xc0 RSP CR2: 0000000000000000 ---[ end trace 99fc090ab3ff6cbc ]--- Fixes: f1bddbb ("usb: gadget: Fix binding to UDC via configfs interface") Signed-off-by: Felix Hädicke Tested-by: Krzysztof Opasiak Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/core.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index 9483489080f6..0402177f93cd 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -1317,7 +1317,11 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver) if (!ret) break; } - if (!ret && !udc->driver) + if (ret) + ret = -ENODEV; + else if (udc->driver) + ret = -EBUSY; + else goto found; } else { list_for_each_entry(udc, &udc_list, list) { -- cgit v1.2.3 From 427157631648c980e8bba4d73a21508b9e1a47ec Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Sun, 18 Dec 2016 10:19:28 +0100 Subject: USB: serial: f81534: detect errors from f81534_logic_to_phy_port() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit With gcc 4.1.2: drivers/usb/serial/f81534.c: In function ‘f81534_port_probe’: drivers/usb/serial/f81534.c:1250: warning: comparison is always false due to limited range of data type f81534_logic_to_phy_port() may return a negative error value, which is ignored by assigning it to u8 f81534_port_private.phy_num. Use an intermediate variable of type int to fix this. While at it, forward the actual error code instead of converting it to -ENODEV, and drop the useless check for F81534_NUM_PORT, as the callee always returns a valid port number in case of success. Fixes: 0c9bd6004d258d46 ("USB: serial: add Fintek F81532/534 driver") Signed-off-by: Geert Uytterhoeven Signed-off-by: Johan Hovold --- drivers/usb/serial/f81534.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/f81534.c b/drivers/usb/serial/f81534.c index 8282a6a18fee..22f23a429a95 100644 --- a/drivers/usb/serial/f81534.c +++ b/drivers/usb/serial/f81534.c @@ -1237,6 +1237,7 @@ static int f81534_attach(struct usb_serial *serial) static int f81534_port_probe(struct usb_serial_port *port) { struct f81534_port_private *port_priv; + int ret; port_priv = devm_kzalloc(&port->dev, sizeof(*port_priv), GFP_KERNEL); if (!port_priv) @@ -1246,10 +1247,11 @@ static int f81534_port_probe(struct usb_serial_port *port) mutex_init(&port_priv->mcr_mutex); /* Assign logic-to-phy mapping */ - port_priv->phy_num = f81534_logic_to_phy_port(port->serial, port); - if (port_priv->phy_num < 0 || port_priv->phy_num >= F81534_NUM_PORT) - return -ENODEV; + ret = f81534_logic_to_phy_port(port->serial, port); + if (ret < 0) + return ret; + port_priv->phy_num = ret; usb_set_serial_port_data(port, port_priv); dev_dbg(&port->dev, "%s: port_number: %d, phy_num: %d\n", __func__, port->port_number, port_priv->phy_num); -- cgit v1.2.3 From 9418ee15f718939aa7e650fd586d73765eb21f20 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Tue, 3 Jan 2017 14:32:09 +0200 Subject: usb: dwc3: gadget: Fix full speed mode DCFG.DEVSPD == 0x3 is not valid and we need to set DCFG.DEVSPD to 0x1 for full speed mode. Same goes for DSTS.CONNECTSPD. Old databooks had 0x3 for full speed in 48MHz mode for USB1.1 transceivers which was never supported. Newer databooks don't mention 0x3 at all. Cc: John Youn Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 6 ++---- drivers/usb/dwc3/gadget.c | 5 ++--- 2 files changed, 4 insertions(+), 7 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 7bf8016e1182..14b760209680 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -309,9 +309,8 @@ #define DWC3_DCFG_SUPERSPEED_PLUS (5 << 0) /* DWC_usb31 only */ #define DWC3_DCFG_SUPERSPEED (4 << 0) #define DWC3_DCFG_HIGHSPEED (0 << 0) -#define DWC3_DCFG_FULLSPEED2 (1 << 0) +#define DWC3_DCFG_FULLSPEED (1 << 0) #define DWC3_DCFG_LOWSPEED (2 << 0) -#define DWC3_DCFG_FULLSPEED1 (3 << 0) #define DWC3_DCFG_NUMP_SHIFT 17 #define DWC3_DCFG_NUMP(n) (((n) >> DWC3_DCFG_NUMP_SHIFT) & 0x1f) @@ -403,9 +402,8 @@ #define DWC3_DSTS_SUPERSPEED_PLUS (5 << 0) /* DWC_usb31 only */ #define DWC3_DSTS_SUPERSPEED (4 << 0) #define DWC3_DSTS_HIGHSPEED (0 << 0) -#define DWC3_DSTS_FULLSPEED2 (1 << 0) +#define DWC3_DSTS_FULLSPEED (1 << 0) #define DWC3_DSTS_LOWSPEED (2 << 0) -#define DWC3_DSTS_FULLSPEED1 (3 << 0) /* Device Generic Command Register */ #define DWC3_DGCMD_SET_LMP 0x01 diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 725b13ad220d..204c754cc647 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1720,7 +1720,7 @@ static int __dwc3_gadget_start(struct dwc3 *dwc) reg |= DWC3_DCFG_LOWSPEED; break; case USB_SPEED_FULL: - reg |= DWC3_DCFG_FULLSPEED1; + reg |= DWC3_DCFG_FULLSPEED; break; case USB_SPEED_HIGH: reg |= DWC3_DCFG_HIGHSPEED; @@ -2536,8 +2536,7 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc) dwc->gadget.ep0->maxpacket = 64; dwc->gadget.speed = USB_SPEED_HIGH; break; - case DWC3_DSTS_FULLSPEED2: - case DWC3_DSTS_FULLSPEED1: + case DWC3_DSTS_FULLSPEED: dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(64); dwc->gadget.ep0->maxpacket = 64; dwc->gadget.speed = USB_SPEED_FULL; -- cgit v1.2.3 From 43aef5c2ca90535b3227e97e71604291875444ed Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 2 Jan 2017 17:28:39 -0600 Subject: usb: gadget: Fix copy/pasted error message This fixes an error message that was probably copied and pasted. The same message is used for both the in and out endpoints, so it makes it impossible to know which one actually failed because both cases say "IN". Make the out endpoint error message say "OUT". Signed-off-by: David Lechner Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_hid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c index 3151d2a0fe59..5f8139b8e601 100644 --- a/drivers/usb/gadget/function/f_hid.c +++ b/drivers/usb/gadget/function/f_hid.c @@ -593,7 +593,7 @@ static int hidg_set_alt(struct usb_function *f, unsigned intf, unsigned alt) } status = usb_ep_enable(hidg->out_ep); if (status < 0) { - ERROR(cdev, "Enable IN endpoint FAILED!\n"); + ERROR(cdev, "Enable OUT endpoint FAILED!\n"); goto fail; } hidg->out_ep->driver_data = hidg; -- cgit v1.2.3 From ee8665e28e8d90ce69d4abe5a469c14a8707ae0e Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Tue, 3 Jan 2017 18:28:43 +0200 Subject: xhci: free xhci virtual devices with leaf nodes first the tt_info provided by a HS hub might be in use to by a child device Make sure we free the devices in the correct order. This is needed in special cases such as when xhci controller is reset when resuming from hibernate, and all virt_devices are freed. Also free the virt_devices starting from max slot_id as children more commonly have higher slot_id than parent. CC: Reported-by: Guenter Roeck Tested-by: Guenter Roeck Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-mem.c | 38 ++++++++++++++++++++++++++++++++++++-- 1 file changed, 36 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 321de2e0161b..1dfd1c223cf2 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -979,6 +979,40 @@ void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id) xhci->devs[slot_id] = NULL; } +/* + * Free a virt_device structure. + * If the virt_device added a tt_info (a hub) and has children pointing to + * that tt_info, then free the child first. Recursive. + * We can't rely on udev at this point to find child-parent relationships. + */ +void xhci_free_virt_devices_depth_first(struct xhci_hcd *xhci, int slot_id) +{ + struct xhci_virt_device *vdev; + struct list_head *tt_list_head; + struct xhci_tt_bw_info *tt_info, *next; + int i; + + vdev = xhci->devs[slot_id]; + if (!vdev) + return; + + tt_list_head = &(xhci->rh_bw[vdev->real_port - 1].tts); + list_for_each_entry_safe(tt_info, next, tt_list_head, tt_list) { + /* is this a hub device that added a tt_info to the tts list */ + if (tt_info->slot_id == slot_id) { + /* are any devices using this tt_info? */ + for (i = 1; i < HCS_MAX_SLOTS(xhci->hcs_params1); i++) { + vdev = xhci->devs[i]; + if (vdev && (vdev->tt_info == tt_info)) + xhci_free_virt_devices_depth_first( + xhci, i); + } + } + } + /* we are now at a leaf device */ + xhci_free_virt_device(xhci, slot_id); +} + int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, struct usb_device *udev, gfp_t flags) { @@ -1828,8 +1862,8 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) } } - for (i = 1; i < MAX_HC_SLOTS; ++i) - xhci_free_virt_device(xhci, i); + for (i = HCS_MAX_SLOTS(xhci->hcs_params1); i > 0; i--) + xhci_free_virt_devices_depth_first(xhci, i); dma_pool_destroy(xhci->segment_pool); xhci->segment_pool = NULL; -- cgit v1.2.3 From 90797aee5d6902b49a453c97d83c326408aeb5a8 Mon Sep 17 00:00:00 2001 From: Lu Baolu Date: Tue, 3 Jan 2017 18:28:44 +0200 Subject: usb: xhci: fix return value of xhci_setup_device() xhci_setup_device() should return failure with correct error number when xhci host has died, removed or halted. During usb device enumeration, if usb host is not accessible (died, removed or halted), the hc_driver->address_device() should return a corresponding error code to usb core. But current xhci driver just returns success. This misleads usb core to continue the enumeration by reading the device descriptor, which will result in failure, and users will get a misleading message like "device descriptor read/8, error -110". Cc: # v4.3+ Signed-off-by: Lu Baolu Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 1cd56417cbec..0c8deb9ed42d 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -3787,8 +3787,10 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev, mutex_lock(&xhci->mutex); - if (xhci->xhc_state) /* dying, removing or halted */ + if (xhci->xhc_state) { /* dying, removing or halted */ + ret = -ESHUTDOWN; goto out; + } if (!udev->slot_id) { xhci_dbg_trace(xhci, trace_xhci_dbg_address, -- cgit v1.2.3 From 28bedb5ae463b9f7e5195cbc93f1795e374bdef8 Mon Sep 17 00:00:00 2001 From: Pan Bian Date: Tue, 3 Jan 2017 18:28:45 +0200 Subject: usb: return error code when platform_get_irq fails In function xhci_mtk_probe(), variable ret takes the return value. Its value should be negative on failures. However, when the call to function platform_get_irq() fails, it does not set the error code, and 0 will be returned. 0 indicates no error. As a result, the callers of function xhci_mtk_probe() will not be able to detect the error. This patch fixes the bug by assigning the return value of platform_get_irq() to variable ret if it fails. CC: Signed-off-by: Pan Bian Reviewed-by: Matthias Brugger Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-mtk.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c index 1094ebd2838f..bac961cd24ad 100644 --- a/drivers/usb/host/xhci-mtk.c +++ b/drivers/usb/host/xhci-mtk.c @@ -579,8 +579,10 @@ static int xhci_mtk_probe(struct platform_device *pdev) goto disable_ldos; irq = platform_get_irq(pdev, 0); - if (irq < 0) + if (irq < 0) { + ret = irq; goto disable_clk; + } /* Initialize dma_mask and coherent_dma_mask to 32-bits */ ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32)); -- cgit v1.2.3 From 2b985467371a58ae44d76c7ba12b0951fee6ed98 Mon Sep 17 00:00:00 2001 From: Lu Baolu Date: Tue, 3 Jan 2017 18:28:46 +0200 Subject: usb: xhci: fix possible wild pointer handle_cmd_completion() frees a command structure which might be still referenced by xhci->current_cmd. This might cause problem when xhci->current_cmd is accessed after that. A real-life case could be like this. The host takes a very long time to respond to a command, and the command timer is fired at the same time when the command completion event arrives. The command completion handler frees xhci->current_cmd before the timer function can grab xhci->lock. Afterward, timer function grabs the lock and go ahead with checking and setting members of xhci->current_cmd. Cc: # v3.16+ Signed-off-by: Lu Baolu Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index bdf6b13d9b67..acc37311c938 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1267,14 +1267,18 @@ void xhci_handle_command_timeout(unsigned long data) bool second_timeout = false; xhci = (struct xhci_hcd *) data; - /* mark this command to be cancelled */ spin_lock_irqsave(&xhci->lock, flags); - if (xhci->current_cmd) { - if (xhci->current_cmd->status == COMP_CMD_ABORT) - second_timeout = true; - xhci->current_cmd->status = COMP_CMD_ABORT; + + if (!xhci->current_cmd) { + spin_unlock_irqrestore(&xhci->lock, flags); + return; } + /* mark this command to be cancelled */ + if (xhci->current_cmd->status == COMP_CMD_ABORT) + second_timeout = true; + xhci->current_cmd->status = COMP_CMD_ABORT; + /* Make sure command ring is running before aborting it */ hw_ring_state = xhci_read_64(xhci, &xhci->op_regs->cmd_ring); if ((xhci->cmd_ring_state & CMD_RING_STATE_RUNNING) && @@ -1422,6 +1426,8 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, xhci->current_cmd = list_entry(cmd->cmd_list.next, struct xhci_command, cmd_list); mod_timer(&xhci->cmd_timer, jiffies + XHCI_CMD_DEFAULT_TIMEOUT); + } else if (xhci->current_cmd == cmd) { + xhci->current_cmd = NULL; } event_handled: -- cgit v1.2.3 From 2a7cfdf37b7c08ac29df4c62ea5ccb01474b6597 Mon Sep 17 00:00:00 2001 From: Baolin Wang Date: Tue, 3 Jan 2017 18:28:47 +0200 Subject: usb: host: xhci: Fix possible wild pointer when handling abort command When current command was supposed to be aborted, host will free the command in handle_cmd_completion() function. But it might be still referenced by xhci->current_cmd, which need to set NULL. Cc: Signed-off-by: Baolin Wang Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index acc37311c938..bc8be6f6669e 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1363,8 +1363,11 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, */ if (cmd_comp_code == COMP_CMD_ABORT) { xhci->cmd_ring_state = CMD_RING_STATE_STOPPED; - if (cmd->status == COMP_CMD_ABORT) + if (cmd->status == COMP_CMD_ABORT) { + if (xhci->current_cmd == cmd) + xhci->current_cmd = NULL; goto event_handled; + } } cmd_type = TRB_FIELD_TO_TYPE(le32_to_cpu(cmd_trb->generic.field[3])); -- cgit v1.2.3 From a5a1b9514154437aa1ed35c291191f82fd3e941a Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Tue, 3 Jan 2017 18:28:48 +0200 Subject: xhci: Handle command completion and timeout race If we get a command completion event at the same time as the command timeout work starts on another cpu we might end up aborting the wrong command. If the command completion takes the xhci lock before the timeout work, it will handle the command, pick the next command, mark it as current_cmd, and re-queue the timeout work. When the timeout work finally gets the lock It will start aborting the wrong command. This case can be resolved by checking if the timeout work is pending inside the timeout function itself. A new timeout work can only be pending if the command completed and a new command was queued. If there are no more commands pending then command completion will set the current_cmd to NULL, which is already handled in the timeout work. Cc: Reported-by: Baolin Wang Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index bc8be6f6669e..935193c6bf23 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1269,7 +1269,11 @@ void xhci_handle_command_timeout(unsigned long data) spin_lock_irqsave(&xhci->lock, flags); - if (!xhci->current_cmd) { + /* + * If timeout work is pending, or current_cmd is NULL, it means we + * raced with command completion. Command is handled so just return. + */ + if (!xhci->current_cmd || timer_pending(&xhci->cmd_timer)) { spin_unlock_irqrestore(&xhci->lock, flags); return; } -- cgit v1.2.3 From 4dea70778c0f48b4385c7720c363ec8d37a401b4 Mon Sep 17 00:00:00 2001 From: Lu Baolu Date: Tue, 3 Jan 2017 18:28:49 +0200 Subject: usb: xhci: hold lock over xhci_abort_cmd_ring() In command timer function, xhci_handle_command_timeout(), xhci->lock is unlocked before call into xhci_abort_cmd_ring(). This might cause race between the timer function and the event handler. The xhci_abort_cmd_ring() function sets the CMD_RING_ABORT bit in the command register and polling it until the setting takes effect. A stop command ring event might be handled between writing the abort bit and polling for it. The event handler will restart the command ring, which causes the failure of polling, and we ever believed that we failed to stop it. As a bonus, this also fixes some issues of calling functions without locking in xhci_handle_command_timeout(). Cc: # 3.7+ Signed-off-by: Lu Baolu Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 935193c6bf23..2f453e442ac7 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1287,29 +1287,34 @@ void xhci_handle_command_timeout(unsigned long data) hw_ring_state = xhci_read_64(xhci, &xhci->op_regs->cmd_ring); if ((xhci->cmd_ring_state & CMD_RING_STATE_RUNNING) && (hw_ring_state & CMD_RING_RUNNING)) { - spin_unlock_irqrestore(&xhci->lock, flags); xhci_dbg(xhci, "Command timeout\n"); ret = xhci_abort_cmd_ring(xhci); if (unlikely(ret == -ESHUTDOWN)) { xhci_err(xhci, "Abort command ring failed\n"); xhci_cleanup_command_queue(xhci); + spin_unlock_irqrestore(&xhci->lock, flags); usb_hc_died(xhci_to_hcd(xhci)->primary_hcd); xhci_dbg(xhci, "xHCI host controller is dead.\n"); + + return; } - return; + + goto time_out_completed; } /* command ring failed to restart, or host removed. Bail out */ if (second_timeout || xhci->xhc_state & XHCI_STATE_REMOVING) { - spin_unlock_irqrestore(&xhci->lock, flags); xhci_dbg(xhci, "command timed out twice, ring start fail?\n"); xhci_cleanup_command_queue(xhci); - return; + + goto time_out_completed; } /* command timeout on stopped ring, ring can't be aborted */ xhci_dbg(xhci, "Command timeout on stopped ring\n"); xhci_handle_stopped_cmd_ring(xhci, xhci->current_cmd); + +time_out_completed: spin_unlock_irqrestore(&xhci->lock, flags); return; } -- cgit v1.2.3 From cb4d5ce588c5ff68e0fdd30370a0e6bc2c0a736b Mon Sep 17 00:00:00 2001 From: OGAWA Hirofumi Date: Tue, 3 Jan 2017 18:28:50 +0200 Subject: xhci: Use delayed_work instead of timer for command timeout This is preparation to fix abort operation race (See "xhci: Fix race related to abort operation"). To make timeout sleepable, use delayed_work instead of timer. [change a newly added pending timer fix to pending work -Mathias] Signed-off-by: OGAWA Hirofumi Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-mem.c | 7 +++---- drivers/usb/host/xhci-ring.c | 26 ++++++++++++++++---------- drivers/usb/host/xhci.h | 4 ++-- 3 files changed, 21 insertions(+), 16 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 1dfd1c223cf2..57c038c5afa5 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1829,7 +1829,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) int size; int i, j, num_ports; - del_timer_sync(&xhci->cmd_timer); + cancel_delayed_work_sync(&xhci->cmd_timer); /* Free the Event Ring Segment Table and the actual Event Ring */ size = sizeof(struct xhci_erst_entry)*(xhci->erst.num_entries); @@ -2376,9 +2376,8 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) INIT_LIST_HEAD(&xhci->cmd_list); - /* init command timeout timer */ - setup_timer(&xhci->cmd_timer, xhci_handle_command_timeout, - (unsigned long)xhci); + /* init command timeout work */ + INIT_DELAYED_WORK(&xhci->cmd_timer, xhci_handle_command_timeout); page_size = readl(&xhci->op_regs->page_size); xhci_dbg_trace(xhci, trace_xhci_dbg_init, diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 2f453e442ac7..fdff6a4cf206 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -279,6 +279,11 @@ void xhci_ring_cmd_db(struct xhci_hcd *xhci) readl(&xhci->dba->doorbell[0]); } +static bool xhci_mod_cmd_timer(struct xhci_hcd *xhci, unsigned long delay) +{ + return mod_delayed_work(system_wq, &xhci->cmd_timer, delay); +} + static int xhci_abort_cmd_ring(struct xhci_hcd *xhci) { u64 temp_64; @@ -295,7 +300,7 @@ static int xhci_abort_cmd_ring(struct xhci_hcd *xhci) * but the completion event in never sent. Use the cmd timeout timer to * handle those cases. Use twice the time to cover the bit polling retry */ - mod_timer(&xhci->cmd_timer, jiffies + (2 * XHCI_CMD_DEFAULT_TIMEOUT)); + xhci_mod_cmd_timer(xhci, 2 * XHCI_CMD_DEFAULT_TIMEOUT); xhci_write_64(xhci, temp_64 | CMD_RING_ABORT, &xhci->op_regs->cmd_ring); @@ -320,7 +325,7 @@ static int xhci_abort_cmd_ring(struct xhci_hcd *xhci) xhci_err(xhci, "Stopped the command ring failed, " "maybe the host is dead\n"); - del_timer(&xhci->cmd_timer); + cancel_delayed_work(&xhci->cmd_timer); xhci->xhc_state |= XHCI_STATE_DYING; xhci_halt(xhci); return -ESHUTDOWN; @@ -1251,21 +1256,22 @@ static void xhci_handle_stopped_cmd_ring(struct xhci_hcd *xhci, if ((xhci->cmd_ring->dequeue != xhci->cmd_ring->enqueue) && !(xhci->xhc_state & XHCI_STATE_DYING)) { xhci->current_cmd = cur_cmd; - mod_timer(&xhci->cmd_timer, jiffies + XHCI_CMD_DEFAULT_TIMEOUT); + xhci_mod_cmd_timer(xhci, XHCI_CMD_DEFAULT_TIMEOUT); xhci_ring_cmd_db(xhci); } return; } -void xhci_handle_command_timeout(unsigned long data) +void xhci_handle_command_timeout(struct work_struct *work) { struct xhci_hcd *xhci; int ret; unsigned long flags; u64 hw_ring_state; bool second_timeout = false; - xhci = (struct xhci_hcd *) data; + + xhci = container_of(to_delayed_work(work), struct xhci_hcd, cmd_timer); spin_lock_irqsave(&xhci->lock, flags); @@ -1273,7 +1279,7 @@ void xhci_handle_command_timeout(unsigned long data) * If timeout work is pending, or current_cmd is NULL, it means we * raced with command completion. Command is handled so just return. */ - if (!xhci->current_cmd || timer_pending(&xhci->cmd_timer)) { + if (!xhci->current_cmd || delayed_work_pending(&xhci->cmd_timer)) { spin_unlock_irqrestore(&xhci->lock, flags); return; } @@ -1346,7 +1352,7 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, cmd = list_entry(xhci->cmd_list.next, struct xhci_command, cmd_list); - del_timer(&xhci->cmd_timer); + cancel_delayed_work(&xhci->cmd_timer); trace_xhci_cmd_completion(cmd_trb, (struct xhci_generic_trb *) event); @@ -1437,7 +1443,7 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, if (cmd->cmd_list.next != &xhci->cmd_list) { xhci->current_cmd = list_entry(cmd->cmd_list.next, struct xhci_command, cmd_list); - mod_timer(&xhci->cmd_timer, jiffies + XHCI_CMD_DEFAULT_TIMEOUT); + xhci_mod_cmd_timer(xhci, XHCI_CMD_DEFAULT_TIMEOUT); } else if (xhci->current_cmd == cmd) { xhci->current_cmd = NULL; } @@ -3808,9 +3814,9 @@ static int queue_command(struct xhci_hcd *xhci, struct xhci_command *cmd, /* if there are no other commands queued we start the timeout timer */ if (xhci->cmd_list.next == &cmd->cmd_list && - !timer_pending(&xhci->cmd_timer)) { + !delayed_work_pending(&xhci->cmd_timer)) { xhci->current_cmd = cmd; - mod_timer(&xhci->cmd_timer, jiffies + XHCI_CMD_DEFAULT_TIMEOUT); + xhci_mod_cmd_timer(xhci, XHCI_CMD_DEFAULT_TIMEOUT); } queue_trb(xhci, xhci->cmd_ring, false, field1, field2, field3, diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 8ccc11a974b8..b54c486df956 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1568,7 +1568,7 @@ struct xhci_hcd { #define CMD_RING_STATE_STOPPED (1 << 2) struct list_head cmd_list; unsigned int cmd_ring_reserved_trbs; - struct timer_list cmd_timer; + struct delayed_work cmd_timer; struct xhci_command *current_cmd; struct xhci_ring *event_ring; struct xhci_erst erst; @@ -1934,7 +1934,7 @@ void xhci_queue_config_ep_quirk(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, struct xhci_dequeue_state *deq_state); void xhci_stop_endpoint_command_watchdog(unsigned long arg); -void xhci_handle_command_timeout(unsigned long data); +void xhci_handle_command_timeout(struct work_struct *work); void xhci_ring_ep_doorbell(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, unsigned int stream_id); -- cgit v1.2.3 From 1c111b6c3844a142e03bcfc2fa17bfbdea08e9dc Mon Sep 17 00:00:00 2001 From: OGAWA Hirofumi Date: Tue, 3 Jan 2017 18:28:51 +0200 Subject: xhci: Fix race related to abort operation Current abort operation has race. xhci_handle_command_timeout() xhci_abort_cmd_ring() xhci_write_64(CMD_RING_ABORT) xhci_handshake(5s) do { check CMD_RING_RUNNING udelay(1) ... COMP_CMD_ABORT event COMP_CMD_STOP event xhci_handle_stopped_cmd_ring() restart cmd_ring CMD_RING_RUNNING become 1 again } while () return -ETIMEDOUT xhci_write_64(CMD_RING_ABORT) /* can abort random command */ To do abort operation correctly, we have to wait both of COMP_CMD_STOP event and negation of CMD_RING_RUNNING. But like above, while timeout handler is waiting negation of CMD_RING_RUNNING, event handler can restart cmd_ring. So timeout handler never be notice negation of CMD_RING_RUNNING, and retry of CMD_RING_ABORT can abort random command (BTW, I guess retry of CMD_RING_ABORT was workaround of this race). To fix this race, this moves xhci_handle_stopped_cmd_ring() to xhci_abort_cmd_ring(). And timeout handler waits COMP_CMD_STOP event. At this point, timeout handler is owner of cmd_ring, and safely restart cmd_ring by using xhci_handle_stopped_cmd_ring(). [FWIW, as bonus, this way would be easily extend to add CMD_RING_PAUSE operation] [locks edited as patch is rebased on other locking fixes -Mathias] Signed-off-by: OGAWA Hirofumi Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-mem.c | 1 + drivers/usb/host/xhci-ring.c | 168 ++++++++++++++++++++++--------------------- drivers/usb/host/xhci.h | 1 + 3 files changed, 90 insertions(+), 80 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 57c038c5afa5..8414ed2a02de 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -2378,6 +2378,7 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) /* init command timeout work */ INIT_DELAYED_WORK(&xhci->cmd_timer, xhci_handle_command_timeout); + init_completion(&xhci->cmd_ring_stop_completion); page_size = readl(&xhci->op_regs->page_size); xhci_dbg_trace(xhci, trace_xhci_dbg_init, diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index fdff6a4cf206..7a14e9ad664d 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -284,23 +284,71 @@ static bool xhci_mod_cmd_timer(struct xhci_hcd *xhci, unsigned long delay) return mod_delayed_work(system_wq, &xhci->cmd_timer, delay); } -static int xhci_abort_cmd_ring(struct xhci_hcd *xhci) +static struct xhci_command *xhci_next_queued_cmd(struct xhci_hcd *xhci) +{ + return list_first_entry_or_null(&xhci->cmd_list, struct xhci_command, + cmd_list); +} + +/* + * Turn all commands on command ring with status set to "aborted" to no-op trbs. + * If there are other commands waiting then restart the ring and kick the timer. + * This must be called with command ring stopped and xhci->lock held. + */ +static void xhci_handle_stopped_cmd_ring(struct xhci_hcd *xhci, + struct xhci_command *cur_cmd) +{ + struct xhci_command *i_cmd; + u32 cycle_state; + + /* Turn all aborted commands in list to no-ops, then restart */ + list_for_each_entry(i_cmd, &xhci->cmd_list, cmd_list) { + + if (i_cmd->status != COMP_CMD_ABORT) + continue; + + i_cmd->status = COMP_CMD_STOP; + + xhci_dbg(xhci, "Turn aborted command %p to no-op\n", + i_cmd->command_trb); + /* get cycle state from the original cmd trb */ + cycle_state = le32_to_cpu( + i_cmd->command_trb->generic.field[3]) & TRB_CYCLE; + /* modify the command trb to no-op command */ + i_cmd->command_trb->generic.field[0] = 0; + i_cmd->command_trb->generic.field[1] = 0; + i_cmd->command_trb->generic.field[2] = 0; + i_cmd->command_trb->generic.field[3] = cpu_to_le32( + TRB_TYPE(TRB_CMD_NOOP) | cycle_state); + + /* + * caller waiting for completion is called when command + * completion event is received for these no-op commands + */ + } + + xhci->cmd_ring_state = CMD_RING_STATE_RUNNING; + + /* ring command ring doorbell to restart the command ring */ + if ((xhci->cmd_ring->dequeue != xhci->cmd_ring->enqueue) && + !(xhci->xhc_state & XHCI_STATE_DYING)) { + xhci->current_cmd = cur_cmd; + xhci_mod_cmd_timer(xhci, XHCI_CMD_DEFAULT_TIMEOUT); + xhci_ring_cmd_db(xhci); + } +} + +/* Must be called with xhci->lock held, releases and aquires lock back */ +static int xhci_abort_cmd_ring(struct xhci_hcd *xhci, unsigned long flags) { u64 temp_64; int ret; xhci_dbg(xhci, "Abort command ring\n"); - temp_64 = xhci_read_64(xhci, &xhci->op_regs->cmd_ring); - xhci->cmd_ring_state = CMD_RING_STATE_ABORTED; + reinit_completion(&xhci->cmd_ring_stop_completion); - /* - * Writing the CMD_RING_ABORT bit should cause a cmd completion event, - * however on some host hw the CMD_RING_RUNNING bit is correctly cleared - * but the completion event in never sent. Use the cmd timeout timer to - * handle those cases. Use twice the time to cover the bit polling retry - */ - xhci_mod_cmd_timer(xhci, 2 * XHCI_CMD_DEFAULT_TIMEOUT); + temp_64 = xhci_read_64(xhci, &xhci->op_regs->cmd_ring); xhci_write_64(xhci, temp_64 | CMD_RING_ABORT, &xhci->op_regs->cmd_ring); @@ -320,17 +368,30 @@ static int xhci_abort_cmd_ring(struct xhci_hcd *xhci) udelay(1000); ret = xhci_handshake(&xhci->op_regs->cmd_ring, CMD_RING_RUNNING, 0, 3 * 1000 * 1000); - if (ret == 0) - return 0; - - xhci_err(xhci, "Stopped the command ring failed, " - "maybe the host is dead\n"); - cancel_delayed_work(&xhci->cmd_timer); - xhci->xhc_state |= XHCI_STATE_DYING; - xhci_halt(xhci); - return -ESHUTDOWN; + if (ret < 0) { + xhci_err(xhci, "Stopped the command ring failed, " + "maybe the host is dead\n"); + xhci->xhc_state |= XHCI_STATE_DYING; + xhci_halt(xhci); + return -ESHUTDOWN; + } + } + /* + * Writing the CMD_RING_ABORT bit should cause a cmd completion event, + * however on some host hw the CMD_RING_RUNNING bit is correctly cleared + * but the completion event in never sent. Wait 2 secs (arbitrary + * number) to handle those cases after negation of CMD_RING_RUNNING. + */ + spin_unlock_irqrestore(&xhci->lock, flags); + ret = wait_for_completion_timeout(&xhci->cmd_ring_stop_completion, + msecs_to_jiffies(2000)); + spin_lock_irqsave(&xhci->lock, flags); + if (!ret) { + xhci_dbg(xhci, "No stop event for abort, ring start fail?\n"); + xhci_cleanup_command_queue(xhci); + } else { + xhci_handle_stopped_cmd_ring(xhci, xhci_next_queued_cmd(xhci)); } - return 0; } @@ -1212,64 +1273,12 @@ void xhci_cleanup_command_queue(struct xhci_hcd *xhci) xhci_complete_del_and_free_cmd(cur_cmd, COMP_CMD_ABORT); } -/* - * Turn all commands on command ring with status set to "aborted" to no-op trbs. - * If there are other commands waiting then restart the ring and kick the timer. - * This must be called with command ring stopped and xhci->lock held. - */ -static void xhci_handle_stopped_cmd_ring(struct xhci_hcd *xhci, - struct xhci_command *cur_cmd) -{ - struct xhci_command *i_cmd, *tmp_cmd; - u32 cycle_state; - - /* Turn all aborted commands in list to no-ops, then restart */ - list_for_each_entry_safe(i_cmd, tmp_cmd, &xhci->cmd_list, - cmd_list) { - - if (i_cmd->status != COMP_CMD_ABORT) - continue; - - i_cmd->status = COMP_CMD_STOP; - - xhci_dbg(xhci, "Turn aborted command %p to no-op\n", - i_cmd->command_trb); - /* get cycle state from the original cmd trb */ - cycle_state = le32_to_cpu( - i_cmd->command_trb->generic.field[3]) & TRB_CYCLE; - /* modify the command trb to no-op command */ - i_cmd->command_trb->generic.field[0] = 0; - i_cmd->command_trb->generic.field[1] = 0; - i_cmd->command_trb->generic.field[2] = 0; - i_cmd->command_trb->generic.field[3] = cpu_to_le32( - TRB_TYPE(TRB_CMD_NOOP) | cycle_state); - - /* - * caller waiting for completion is called when command - * completion event is received for these no-op commands - */ - } - - xhci->cmd_ring_state = CMD_RING_STATE_RUNNING; - - /* ring command ring doorbell to restart the command ring */ - if ((xhci->cmd_ring->dequeue != xhci->cmd_ring->enqueue) && - !(xhci->xhc_state & XHCI_STATE_DYING)) { - xhci->current_cmd = cur_cmd; - xhci_mod_cmd_timer(xhci, XHCI_CMD_DEFAULT_TIMEOUT); - xhci_ring_cmd_db(xhci); - } - return; -} - - void xhci_handle_command_timeout(struct work_struct *work) { struct xhci_hcd *xhci; int ret; unsigned long flags; u64 hw_ring_state; - bool second_timeout = false; xhci = container_of(to_delayed_work(work), struct xhci_hcd, cmd_timer); @@ -1283,18 +1292,17 @@ void xhci_handle_command_timeout(struct work_struct *work) spin_unlock_irqrestore(&xhci->lock, flags); return; } - /* mark this command to be cancelled */ - if (xhci->current_cmd->status == COMP_CMD_ABORT) - second_timeout = true; xhci->current_cmd->status = COMP_CMD_ABORT; /* Make sure command ring is running before aborting it */ hw_ring_state = xhci_read_64(xhci, &xhci->op_regs->cmd_ring); if ((xhci->cmd_ring_state & CMD_RING_STATE_RUNNING) && (hw_ring_state & CMD_RING_RUNNING)) { + /* Prevent new doorbell, and start command abort */ + xhci->cmd_ring_state = CMD_RING_STATE_ABORTED; xhci_dbg(xhci, "Command timeout\n"); - ret = xhci_abort_cmd_ring(xhci); + ret = xhci_abort_cmd_ring(xhci, flags); if (unlikely(ret == -ESHUTDOWN)) { xhci_err(xhci, "Abort command ring failed\n"); xhci_cleanup_command_queue(xhci); @@ -1308,9 +1316,9 @@ void xhci_handle_command_timeout(struct work_struct *work) goto time_out_completed; } - /* command ring failed to restart, or host removed. Bail out */ - if (second_timeout || xhci->xhc_state & XHCI_STATE_REMOVING) { - xhci_dbg(xhci, "command timed out twice, ring start fail?\n"); + /* host removed. Bail out */ + if (xhci->xhc_state & XHCI_STATE_REMOVING) { + xhci_dbg(xhci, "host removed, ring start fail?\n"); xhci_cleanup_command_queue(xhci); goto time_out_completed; @@ -1360,7 +1368,7 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, /* If CMD ring stopped we own the trbs between enqueue and dequeue */ if (cmd_comp_code == COMP_CMD_STOP) { - xhci_handle_stopped_cmd_ring(xhci, cmd); + complete_all(&xhci->cmd_ring_stop_completion); return; } diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index b54c486df956..2d7b6374b58d 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1569,6 +1569,7 @@ struct xhci_hcd { struct list_head cmd_list; unsigned int cmd_ring_reserved_trbs; struct delayed_work cmd_timer; + struct completion cmd_ring_stop_completion; struct xhci_command *current_cmd; struct xhci_ring *event_ring; struct xhci_erst erst; -- cgit v1.2.3 From 6c97cfc1a097b1e0786c836e92b7a72b4d031e25 Mon Sep 17 00:00:00 2001 From: Wan Ahmad Zainie Date: Tue, 3 Jan 2017 18:28:52 +0200 Subject: usb: xhci: apply XHCI_PME_STUCK_QUIRK to Intel Apollo Lake Intel Apollo Lake also requires XHCI_PME_STUCK_QUIRK. Adding its PCI ID to quirk. Cc: Signed-off-by: Wan Ahmad Zainie Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index e96ae80d107e..954abfd5014d 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -165,7 +165,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI || pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI || pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI || - pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI)) { + pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI || + pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI)) { xhci->quirks |= XHCI_PME_STUCK_QUIRK; } if (pdev->vendor == PCI_VENDOR_ID_INTEL && -- cgit v1.2.3 From 29fc1aa454d0603493b47a8e2410ae6e9ab20258 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Tue, 3 Jan 2017 18:28:53 +0200 Subject: usb: host: xhci: handle COMP_STOP from SETUP phase too Stop Endpoint command can come at any point and we have no control of that. We should make sure to handle COMP_STOP on SETUP phase as well, otherwise urb->actual_length might be set to negative values in some occasions such as below: urb->length = 4; build_control_transfer_td_for(urb, ep); stop_endpoint(ep); COMP_STOP: [...] urb->actual_length = urb->length - trb->length; trb->length is 8 for SETUP stage (8 control request bytes), so actual_length would be set to -4 in this case. While doing that, also make sure to use TRB_TYPE field of the actual TRB instead of matching pointers to figure out in which stage of the control transfer we got our completion event. Cc: Signed-off-by: Felipe Balbi Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 33 +++++++++++++++++++++------------ 1 file changed, 21 insertions(+), 12 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 7a14e9ad664d..25f522b09dd9 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1971,8 +1971,9 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td, struct xhci_ep_ctx *ep_ctx; u32 trb_comp_code; u32 remaining, requested; - bool on_data_stage; + u32 trb_type; + trb_type = TRB_FIELD_TO_TYPE(le32_to_cpu(ep_trb->generic.field[3])); slot_id = TRB_TO_SLOT_ID(le32_to_cpu(event->flags)); xdev = xhci->devs[slot_id]; ep_index = TRB_TO_EP_ID(le32_to_cpu(event->flags)) - 1; @@ -1982,14 +1983,11 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td, requested = td->urb->transfer_buffer_length; remaining = EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)); - /* not setup (dequeue), or status stage means we are at data stage */ - on_data_stage = (ep_trb != ep_ring->dequeue && ep_trb != td->last_trb); - switch (trb_comp_code) { case COMP_SUCCESS: - if (ep_trb != td->last_trb) { + if (trb_type != TRB_STATUS) { xhci_warn(xhci, "WARN: Success on ctrl %s TRB without IOC set?\n", - on_data_stage ? "data" : "setup"); + (trb_type == TRB_DATA) ? "data" : "setup"); *status = -ESHUTDOWN; break; } @@ -1999,15 +1997,25 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td, *status = 0; break; case COMP_STOP_SHORT: - if (on_data_stage) + if (trb_type == TRB_DATA || trb_type == TRB_NORMAL) td->urb->actual_length = remaining; else xhci_warn(xhci, "WARN: Stopped Short Packet on ctrl setup or status TRB\n"); goto finish_td; case COMP_STOP: - if (on_data_stage) + switch (trb_type) { + case TRB_SETUP: + td->urb->actual_length = 0; + goto finish_td; + case TRB_DATA: + case TRB_NORMAL: td->urb->actual_length = requested - remaining; - goto finish_td; + goto finish_td; + default: + xhci_warn(xhci, "WARN: unexpected TRB Type %d\n", + trb_type); + goto finish_td; + } case COMP_STOP_INVAL: goto finish_td; default: @@ -2019,7 +2027,7 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td, /* else fall through */ case COMP_STALL: /* Did we transfer part of the data (middle) phase? */ - if (on_data_stage) + if (trb_type == TRB_DATA || trb_type == TRB_NORMAL) td->urb->actual_length = requested - remaining; else if (!td->urb_length_set) td->urb->actual_length = 0; @@ -2027,14 +2035,15 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td, } /* stopped at setup stage, no data transferred */ - if (ep_trb == ep_ring->dequeue) + if (trb_type == TRB_SETUP) goto finish_td; /* * if on data stage then update the actual_length of the URB and flag it * as set, so it won't be overwritten in the event for the last TRB. */ - if (on_data_stage) { + if (trb_type == TRB_DATA || + trb_type == TRB_NORMAL) { td->urb_length_set = true; td->urb->actual_length = requested - remaining; xhci_dbg(xhci, "Waiting for status stage event\n"); -- cgit v1.2.3 From 3dca01114dcecb1cf324534cd8d75fd1306a516b Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:40 +0100 Subject: USB: serial: cyberjack: fix NULL-deref at open Fix NULL-pointer dereference when clearing halt at open should the device lack a bulk-out endpoint. Unable to handle kernel NULL pointer dereference at virtual address 00000030 ... PC is at cyberjack_open+0x40/0x9c [cyberjack] Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/cyberjack.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c index 5f17a3b9916d..80260b08398b 100644 --- a/drivers/usb/serial/cyberjack.c +++ b/drivers/usb/serial/cyberjack.c @@ -50,6 +50,7 @@ #define CYBERJACK_PRODUCT_ID 0x0100 /* Function prototypes */ +static int cyberjack_attach(struct usb_serial *serial); static int cyberjack_port_probe(struct usb_serial_port *port); static int cyberjack_port_remove(struct usb_serial_port *port); static int cyberjack_open(struct tty_struct *tty, @@ -77,6 +78,7 @@ static struct usb_serial_driver cyberjack_device = { .description = "Reiner SCT Cyberjack USB card reader", .id_table = id_table, .num_ports = 1, + .attach = cyberjack_attach, .port_probe = cyberjack_port_probe, .port_remove = cyberjack_port_remove, .open = cyberjack_open, @@ -100,6 +102,14 @@ struct cyberjack_private { short wrsent; /* Data already sent */ }; +static int cyberjack_attach(struct usb_serial *serial) +{ + if (serial->num_bulk_out < serial->num_ports) + return -ENODEV; + + return 0; +} + static int cyberjack_port_probe(struct usb_serial_port *port) { struct cyberjack_private *priv; -- cgit v1.2.3 From c4ac4496e835b78a45dfbf74f6173932217e4116 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:41 +0100 Subject: USB: serial: garmin_gps: fix memory leak on failed URB submit Make sure to free the URB transfer buffer in case submission fails (e.g. due to a disconnect). Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/garmin_gps.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c index 97cabf803c2f..b2f2e87aed94 100644 --- a/drivers/usb/serial/garmin_gps.c +++ b/drivers/usb/serial/garmin_gps.c @@ -1043,6 +1043,7 @@ static int garmin_write_bulk(struct usb_serial_port *port, "%s - usb_submit_urb(write bulk) failed with status = %d\n", __func__, status); count = status; + kfree(buffer); } /* we are done with this urb, so let the host driver -- cgit v1.2.3 From 0dd408425eb21ddf26a692b3c8044c9e7d1a7948 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:42 +0100 Subject: USB: serial: io_edgeport: fix NULL-deref at open Fix NULL-pointer dereference when initialising URBs at open should a non-EPIC device lack a bulk-in or interrupt-in endpoint. Unable to handle kernel NULL pointer dereference at virtual address 00000028 ... PC is at edge_open+0x24c/0x3e8 [io_edgeport] Note that the EPIC-device probe path has the required sanity checks so this makes those checks partially redundant. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/io_edgeport.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index dcc0c58aaad5..d50e5773483f 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -2751,6 +2751,11 @@ static int edge_startup(struct usb_serial *serial) EDGE_COMPATIBILITY_MASK1, EDGE_COMPATIBILITY_MASK2 }; + if (serial->num_bulk_in < 1 || serial->num_interrupt_in < 1) { + dev_err(&serial->interface->dev, "missing endpoints\n"); + return -ENODEV; + } + dev = serial->dev; /* create our private serial structure */ -- cgit v1.2.3 From a323fefc6f5079844dc62ffeb54f491d0242ca35 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:43 +0100 Subject: USB: serial: io_ti: fix NULL-deref at open Fix NULL-pointer dereference when clearing halt at open should a malicious device lack the expected endpoints when in download mode. Unable to handle kernel NULL pointer dereference at virtual address 00000030 ... [] (edge_open [io_ti]) from [] (serial_port_activate+0x68/0x98 [usbserial]) [] (serial_port_activate [usbserial]) from [] (tty_port_open+0x9c/0xe8) [] (tty_port_open) from [] (serial_open+0x48/0x6c [usbserial]) [] (serial_open [usbserial]) from [] (tty_open+0xcc/0x5cc) Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/io_ti.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index c339163698eb..bf8a4f432f4b 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -2546,6 +2546,13 @@ static int edge_startup(struct usb_serial *serial) int status; u16 product_id; + /* Make sure we have the required endpoints when in download mode. */ + if (serial->interface->cur_altsetting->desc.bNumEndpoints > 1) { + if (serial->num_bulk_in < serial->num_ports || + serial->num_bulk_out < serial->num_ports) + return -ENODEV; + } + /* create our private serial structure */ edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); if (!edge_serial) -- cgit v1.2.3 From 4f9785cc99feeb3673993b471f646b4dbaec2cc1 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:44 +0100 Subject: USB: serial: io_ti: fix another NULL-deref at open In case a device is left in "boot-mode" we must not register any port devices in order to avoid a NULL-pointer dereference on open due to missing endpoints. This could be used by a malicious device to trigger an OOPS: Unable to handle kernel NULL pointer dereference at virtual address 00000030 ... [] (edge_open [io_ti]) from [] (serial_port_activate+0x68/0x98 [usbserial]) [] (serial_port_activate [usbserial]) from [] (tty_port_open+0x9c/0xe8) [] (tty_port_open) from [] (serial_open+0x48/0x6c [usbserial]) [] (serial_open [usbserial]) from [] (tty_open+0xcc/0x5cc) Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/io_ti.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index bf8a4f432f4b..3b1cfba0ec84 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -1508,7 +1508,7 @@ stayinbootmode: dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__); serial->product_info.TiMode = TI_MODE_BOOT; - return 0; + return 1; } static int ti_do_config(struct edgeport_port *port, int feature, int on) @@ -2560,14 +2560,18 @@ static int edge_startup(struct usb_serial *serial) mutex_init(&edge_serial->es_lock); edge_serial->serial = serial; + INIT_DELAYED_WORK(&edge_serial->heartbeat_work, edge_heartbeat_work); usb_set_serial_data(serial, edge_serial); status = download_fw(edge_serial); - if (status) { + if (status < 0) { kfree(edge_serial); return status; } + if (status > 0) + return 1; /* bind but do not register any ports */ + product_id = le16_to_cpu( edge_serial->serial->dev->descriptor.idProduct); @@ -2579,7 +2583,6 @@ static int edge_startup(struct usb_serial *serial) } } - INIT_DELAYED_WORK(&edge_serial->heartbeat_work, edge_heartbeat_work); edge_heartbeat_schedule(edge_serial); return 0; -- cgit v1.2.3 From 2330d0a853da260d8a9834a70df448032b9ff623 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:45 +0100 Subject: USB: serial: io_ti: fix I/O after disconnect Cancel the heartbeat work on driver unbind in order to avoid I/O after disconnect in case the port is held open. Note that the cancel in release() is still needed to stop the heartbeat after late probe errors. Fixes: 26c78daade0f ("USB: io_ti: Add heartbeat to keep idle EP/416 ports from disconnecting") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/io_ti.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index 3b1cfba0ec84..4b0b978fb356 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -2590,6 +2590,9 @@ static int edge_startup(struct usb_serial *serial) static void edge_disconnect(struct usb_serial *serial) { + struct edgeport_serial *edge_serial = usb_get_serial_data(serial); + + cancel_delayed_work_sync(&edge_serial->heartbeat_work); } static void edge_release(struct usb_serial *serial) -- cgit v1.2.3 From e35d6d7c4e6532a89732cf4bace0e910ee684c88 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:46 +0100 Subject: USB: serial: io_ti: bind to interface after fw download Bind to the interface, but do not register any ports, after having downloaded the firmware. The device will still disconnect and re-enumerate, but this way we avoid an error messages from being logged as part of the process: io_ti: probe of 1-1.3:1.0 failed with error -5 Signed-off-by: Johan Hovold --- drivers/usb/serial/io_ti.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index 4b0b978fb356..9a0db2965fbb 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -1499,8 +1499,7 @@ static int do_boot_mode(struct edgeport_serial *serial, dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__); - /* return an error on purpose */ - return -ENODEV; + return 1; } stayinbootmode: -- cgit v1.2.3 From 90507d54f712d81b74815ef3a4bbb555cd9fab2f Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:47 +0100 Subject: USB: serial: iuu_phoenix: fix NULL-deref at open Fix NULL-pointer dereference at open should the device lack a bulk-in or bulk-out endpoint: Unable to handle kernel NULL pointer dereference at virtual address 00000030 ... PC is at iuu_open+0x78/0x59c [iuu_phoenix] Fixes: 07c3b1a10016 ("USB: remove broken usb-serial num_endpoints check") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/iuu_phoenix.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c index 344b4eea4bd5..d57fb5199218 100644 --- a/drivers/usb/serial/iuu_phoenix.c +++ b/drivers/usb/serial/iuu_phoenix.c @@ -68,6 +68,16 @@ struct iuu_private { u32 clk; }; +static int iuu_attach(struct usb_serial *serial) +{ + unsigned char num_ports = serial->num_ports; + + if (serial->num_bulk_in < num_ports || serial->num_bulk_out < num_ports) + return -ENODEV; + + return 0; +} + static int iuu_port_probe(struct usb_serial_port *port) { struct iuu_private *priv; @@ -1196,6 +1206,7 @@ static struct usb_serial_driver iuu_device = { .tiocmset = iuu_tiocmset, .set_termios = iuu_set_termios, .init_termios = iuu_init_termios, + .attach = iuu_attach, .port_probe = iuu_port_probe, .port_remove = iuu_port_remove, }; -- cgit v1.2.3 From 5d9b0f859babe96175cd33d7162a9463a875ffde Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:48 +0100 Subject: USB: serial: keyspan_pda: verify endpoints at probe Check for the expected endpoints in attach() and fail loudly if not present. Note that failing to do this appears to be benign since da280e348866 ("USB: keyspan_pda: clean up write-urb busy handling") which prevents a NULL-pointer dereference in write() by never marking a non-existent write-urb as free. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable # < v3.3 Signed-off-by: Johan Hovold --- drivers/usb/serial/keyspan_pda.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c index e49ad0c63ad8..83523fcf6fb9 100644 --- a/drivers/usb/serial/keyspan_pda.c +++ b/drivers/usb/serial/keyspan_pda.c @@ -699,6 +699,19 @@ MODULE_FIRMWARE("keyspan_pda/keyspan_pda.fw"); MODULE_FIRMWARE("keyspan_pda/xircom_pgs.fw"); #endif +static int keyspan_pda_attach(struct usb_serial *serial) +{ + unsigned char num_ports = serial->num_ports; + + if (serial->num_bulk_out < num_ports || + serial->num_interrupt_in < num_ports) { + dev_err(&serial->interface->dev, "missing endpoints\n"); + return -ENODEV; + } + + return 0; +} + static int keyspan_pda_port_probe(struct usb_serial_port *port) { @@ -776,6 +789,7 @@ static struct usb_serial_driver keyspan_pda_device = { .break_ctl = keyspan_pda_break_ctl, .tiocmget = keyspan_pda_tiocmget, .tiocmset = keyspan_pda_tiocmset, + .attach = keyspan_pda_attach, .port_probe = keyspan_pda_port_probe, .port_remove = keyspan_pda_port_remove, }; -- cgit v1.2.3 From 21ce57840243c7b70fbc1ebd3dceeb70bb6e9e09 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:49 +0100 Subject: USB: serial: kobil_sct: fix NULL-deref in write Fix NULL-pointer dereference in write() should the device lack the expected interrupt-out endpoint: Unable to handle kernel NULL pointer dereference at virtual address 00000054 ... PC is at kobil_write+0x144/0x2a0 [kobil_sct] Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/kobil_sct.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c index 2363654cafc9..813035f51fe7 100644 --- a/drivers/usb/serial/kobil_sct.c +++ b/drivers/usb/serial/kobil_sct.c @@ -51,6 +51,7 @@ /* Function prototypes */ +static int kobil_attach(struct usb_serial *serial); static int kobil_port_probe(struct usb_serial_port *probe); static int kobil_port_remove(struct usb_serial_port *probe); static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port); @@ -86,6 +87,7 @@ static struct usb_serial_driver kobil_device = { .description = "KOBIL USB smart card terminal", .id_table = id_table, .num_ports = 1, + .attach = kobil_attach, .port_probe = kobil_port_probe, .port_remove = kobil_port_remove, .ioctl = kobil_ioctl, @@ -113,6 +115,16 @@ struct kobil_private { }; +static int kobil_attach(struct usb_serial *serial) +{ + if (serial->num_interrupt_out < serial->num_ports) { + dev_err(&serial->interface->dev, "missing interrupt-out endpoint\n"); + return -ENODEV; + } + + return 0; +} + static int kobil_port_probe(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; -- cgit v1.2.3 From b05aebc25fdc5aeeac3ee29f0dc9f58dd07c13cc Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:50 +0100 Subject: USB: serial: mos7720: fix NULL-deref at open Fix NULL-pointer dereference at port open if a device lacks the expected bulk in and out endpoints. Unable to handle kernel NULL pointer dereference at virtual address 00000030 ... [] (mos7720_open [mos7720]) from [] (serial_port_activate+0x68/0x98 [usbserial]) [] (serial_port_activate [usbserial]) from [] (tty_port_open+0x9c/0xe8) [] (tty_port_open) from [] (serial_open+0x48/0x6c [usbserial]) [] (serial_open [usbserial]) from [] (tty_open+0xcc/0x5cc) Fixes: 0f64478cbc7a ("USB: add USB serial mos7720 driver") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/mos7720.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index d52caa03679c..3220d0bc767b 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -1917,6 +1917,11 @@ static int mos7720_startup(struct usb_serial *serial) u16 product; int ret_val; + if (serial->num_bulk_in < 2 || serial->num_bulk_out < 2) { + dev_err(&serial->interface->dev, "missing bulk endpoints\n"); + return -ENODEV; + } + product = le16_to_cpu(serial->dev->descriptor.idProduct); dev = serial->dev; -- cgit v1.2.3 From 91a1ff4d53c5184d383d0baeeaeab6f9736f2ff3 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:51 +0100 Subject: USB: serial: mos7720: fix use-after-free on probe errors The interrupt URB was submitted on probe but never stopped on probe errors. This can lead to use-after-free issues in the completion handler when accessing the freed usb-serial struct: Unable to handle kernel paging request at virtual address 6b6b6be7 ... [] (mos7715_interrupt_callback [mos7720]) from [] (__usb_hcd_giveback_urb+0x80/0x140) [] (__usb_hcd_giveback_urb) from [] (usb_hcd_giveback_urb+0x50/0x138) [] (usb_hcd_giveback_urb) from [] (musb_giveback+0xc8/0x1cc) Fixes: b69578df7e98 ("USB: usbserial: mos7720: add support for parallel port on moschip 7715") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/mos7720.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 3220d0bc767b..9170ae856b34 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -1962,8 +1962,10 @@ static int mos7720_startup(struct usb_serial *serial) #ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT if (product == MOSCHIP_DEVICE_ID_7715) { ret_val = mos7715_parport_init(serial); - if (ret_val < 0) + if (ret_val < 0) { + usb_kill_urb(serial->port[0]->interrupt_in_urb); return ret_val; + } } #endif /* LSR For Port 1 */ @@ -1975,6 +1977,8 @@ static int mos7720_startup(struct usb_serial *serial) static void mos7720_release(struct usb_serial *serial) { + usb_kill_urb(serial->port[0]->interrupt_in_urb); + #ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT /* close the parallel port */ -- cgit v1.2.3 From 75dd211e773afcbc264677b0749d1cf7d937ab2d Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:52 +0100 Subject: USB: serial: mos7720: fix parport use-after-free on probe errors Do not submit the interrupt URB until after the parport has been successfully registered to avoid another use-after-free in the completion handler when accessing the freed parport private data in case of a racing completion. Fixes: b69578df7e98 ("USB: usbserial: mos7720: add support for parallel port on moschip 7715") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/mos7720.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 9170ae856b34..e494821ae528 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -1952,22 +1952,20 @@ static int mos7720_startup(struct usb_serial *serial) usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), (__u8)0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5000); - /* start the interrupt urb */ - ret_val = usb_submit_urb(serial->port[0]->interrupt_in_urb, GFP_KERNEL); - if (ret_val) - dev_err(&dev->dev, - "%s - Error %d submitting control urb\n", - __func__, ret_val); - #ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT if (product == MOSCHIP_DEVICE_ID_7715) { ret_val = mos7715_parport_init(serial); - if (ret_val < 0) { - usb_kill_urb(serial->port[0]->interrupt_in_urb); + if (ret_val < 0) return ret_val; - } } #endif + /* start the interrupt urb */ + ret_val = usb_submit_urb(serial->port[0]->interrupt_in_urb, GFP_KERNEL); + if (ret_val) { + dev_err(&dev->dev, "failed to submit interrupt urb: %d\n", + ret_val); + } + /* LSR For Port 1 */ read_mos_reg(serial, 0, MOS7720_LSR, &data); dev_dbg(&dev->dev, "LSR:%x\n", data); -- cgit v1.2.3 From fde1faf872ed86d88e245191bc15a8e57368cd1c Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:53 +0100 Subject: USB: serial: mos7720: fix parallel probe A static usb-serial-driver structure that is used to initialise the interrupt URB was modified during probe depending on the currently probed device type, something which could break a parallel probe of a device of a different type. Fix this up by overriding the default completion callback for MCS7715 devices in attach() instead. We may want to use two usb-serial driver instances for the two types later. Fixes: fb088e335d78 ("USB: serial: add support for serial port on the moschip 7715") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/mos7720.c | 30 +++++++----------------------- 1 file changed, 7 insertions(+), 23 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index e494821ae528..d6c4441db5f8 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -65,8 +65,6 @@ struct moschip_port { struct urb *write_urb_pool[NUM_URBS]; }; -static struct usb_serial_driver moschip7720_2port_driver; - #define USB_VENDOR_ID_MOSCHIP 0x9710 #define MOSCHIP_DEVICE_ID_7720 0x7720 #define MOSCHIP_DEVICE_ID_7715 0x7715 @@ -970,25 +968,6 @@ static void mos7720_bulk_out_data_callback(struct urb *urb) tty_port_tty_wakeup(&mos7720_port->port->port); } -/* - * mos77xx_probe - * this function installs the appropriate read interrupt endpoint callback - * depending on whether the device is a 7720 or 7715, thus avoiding costly - * run-time checks in the high-frequency callback routine itself. - */ -static int mos77xx_probe(struct usb_serial *serial, - const struct usb_device_id *id) -{ - if (id->idProduct == MOSCHIP_DEVICE_ID_7715) - moschip7720_2port_driver.read_int_callback = - mos7715_interrupt_callback; - else - moschip7720_2port_driver.read_int_callback = - mos7720_interrupt_callback; - - return 0; -} - static int mos77xx_calc_num_ports(struct usb_serial *serial) { u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); @@ -1946,6 +1925,12 @@ static int mos7720_startup(struct usb_serial *serial) tmp->interrupt_in_endpointAddress; serial->port[1]->interrupt_in_urb = NULL; serial->port[1]->interrupt_in_buffer = NULL; + + if (serial->port[0]->interrupt_in_urb) { + struct urb *urb = serial->port[0]->interrupt_in_urb; + + urb->complete = mos7715_interrupt_callback; + } } /* setting configuration feature to one */ @@ -2060,7 +2045,6 @@ static struct usb_serial_driver moschip7720_2port_driver = { .close = mos7720_close, .throttle = mos7720_throttle, .unthrottle = mos7720_unthrottle, - .probe = mos77xx_probe, .attach = mos7720_startup, .release = mos7720_release, .port_probe = mos7720_port_probe, @@ -2074,7 +2058,7 @@ static struct usb_serial_driver moschip7720_2port_driver = { .chars_in_buffer = mos7720_chars_in_buffer, .break_ctl = mos7720_break, .read_bulk_callback = mos7720_bulk_in_callback, - .read_int_callback = NULL /* dynamically assigned in probe() */ + .read_int_callback = mos7720_interrupt_callback, }; static struct usb_serial_driver * const serial_drivers[] = { -- cgit v1.2.3 From 9da049bcedf43e20e8cb77ee00a1239497ed9fa2 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:54 +0100 Subject: USB: serial: mos7720: remove obsolete port initialisation Since commit b69578df7e98 ("USB: usbserial: mos7720: add support for parallel port on moschip 7715"), the interrupt urb is no longer submitted at first port open and the endpoint-address initialisation at port-probe is no longer used. Signed-off-by: Johan Hovold --- drivers/usb/serial/mos7720.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index d6c4441db5f8..91bc170b408a 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -2011,11 +2011,6 @@ static int mos7720_port_probe(struct usb_serial_port *port) if (!mos7720_port) return -ENOMEM; - /* Initialize all port interrupt end point to port 0 int endpoint. - * Our device has only one interrupt endpoint common to all ports. - */ - port->interrupt_in_endpointAddress = - port->serial->port[0]->interrupt_in_endpointAddress; mos7720_port->port = port; usb_set_serial_port_data(port, mos7720_port); -- cgit v1.2.3 From 5c75633ef751dd4cd8f443dc35152c1ae563162e Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:55 +0100 Subject: USB: serial: mos7840: fix NULL-deref at open Fix NULL-pointer dereference in open() should the device lack the expected endpoints: Unable to handle kernel NULL pointer dereference at virtual address 00000030 ... PC is at mos7840_open+0x88/0x8dc [mos7840] Note that we continue to treat the interrupt-in endpoint as optional for now. Fixes: 3f5429746d91 ("USB: Moschip 7840 USB-Serial Driver") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/mos7840.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 9a220b8e810f..bb933c6321e5 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -2113,6 +2113,17 @@ static int mos7840_calc_num_ports(struct usb_serial *serial) return mos7840_num_ports; } +static int mos7840_attach(struct usb_serial *serial) +{ + if (serial->num_bulk_in < serial->num_ports || + serial->num_bulk_out < serial->num_ports) { + dev_err(&serial->interface->dev, "missing endpoints\n"); + return -ENODEV; + } + + return 0; +} + static int mos7840_port_probe(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; @@ -2388,6 +2399,7 @@ static struct usb_serial_driver moschip7840_4port_device = { .tiocmset = mos7840_tiocmset, .tiocmiwait = usb_serial_generic_tiocmiwait, .get_icount = usb_serial_generic_get_icount, + .attach = mos7840_attach, .port_probe = mos7840_port_probe, .port_remove = mos7840_port_remove, .read_bulk_callback = mos7840_bulk_in_callback, -- cgit v1.2.3 From fc43e651bf39ef174a86fde4c4593f796b1474c1 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:56 +0100 Subject: USB: serial: mos7840: remove unused write URB Remove code to manage a write URB that was never allocated. Signed-off-by: Johan Hovold --- drivers/usb/serial/mos7840.c | 8 -------- 1 file changed, 8 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index bb933c6321e5..c03cd511669a 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -214,7 +214,6 @@ MODULE_DEVICE_TABLE(usb, id_table); struct moschip_port { int port_num; /*Actual port number in the device(1,2,etc) */ - struct urb *write_urb; /* write URB for this port */ struct urb *read_urb; /* read URB for this port */ __u8 shadowLCR; /* last LCR value received */ __u8 shadowMCR; /* last MCR value received */ @@ -1186,7 +1185,6 @@ static void mos7840_close(struct usb_serial_port *port) } } - usb_kill_urb(mos7840_port->write_urb); usb_kill_urb(mos7840_port->read_urb); mos7840_port->read_urb_busy = false; @@ -1199,12 +1197,6 @@ static void mos7840_close(struct usb_serial_port *port) } } - if (mos7840_port->write_urb) { - /* if this urb had a transfer buffer already (old tx) free it */ - kfree(mos7840_port->write_urb->transfer_buffer); - usb_free_urb(mos7840_port->write_urb); - } - Data = 0x0; mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); -- cgit v1.2.3 From 472d7e55d559aa1cbf58c73b14fcfc4651b1a9f5 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:57 +0100 Subject: USB: serial: mos7840: fix misleading interrupt-URB comment The interrupt URB is killed at final port close since commit 0de9a7024e7a ("USB: overhaul of mos7840 driver"). Fixes: 0de9a7024e7a ("USB: overhaul of mos7840 driver") Signed-off-by: Johan Hovold --- drivers/usb/serial/mos7840.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index c03cd511669a..ea27fb23967a 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -1036,9 +1036,7 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) serial, serial->port[0]->interrupt_in_urb->interval); - /* start interrupt read for mos7840 * - * will continue as long as mos7840 is connected */ - + /* start interrupt read for mos7840 */ response = usb_submit_urb(serial->port[0]->interrupt_in_urb, GFP_KERNEL); -- cgit v1.2.3 From a5bc01949e3b19d8a23b5eabc6fc71bb50dc820e Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:58 +0100 Subject: USB: serial: omninet: fix NULL-derefs at open and disconnect Fix NULL-pointer dereferences at open() and disconnect() should the device lack the expected bulk-out endpoints: Unable to handle kernel NULL pointer dereference at virtual address 000000b4 ... [c0170ff0>] (__lock_acquire) from [] (lock_acquire+0x108/0x264) [] (lock_acquire) from [] (_raw_spin_lock_irqsave+0x58/0x6c) [] (_raw_spin_lock_irqsave) from [] (tty_port_tty_set+0x28/0xa4) [] (tty_port_tty_set) from [] (omninet_open+0x30/0x40 [omninet]) [] (omninet_open [omninet]) from [] (serial_port_activate+0x68/0x98 [usbserial]) Unable to handle kernel NULL pointer dereference at virtual address 00000234 ... [] (omninet_disconnect [omninet]) from [] (usb_serial_disconnect+0xe4/0x100 [usbserial]) Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/omninet.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c index f6c6900bccf0..a180b17d2432 100644 --- a/drivers/usb/serial/omninet.c +++ b/drivers/usb/serial/omninet.c @@ -38,6 +38,7 @@ static int omninet_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); static int omninet_write_room(struct tty_struct *tty); static void omninet_disconnect(struct usb_serial *serial); +static int omninet_attach(struct usb_serial *serial); static int omninet_port_probe(struct usb_serial_port *port); static int omninet_port_remove(struct usb_serial_port *port); @@ -56,6 +57,7 @@ static struct usb_serial_driver zyxel_omninet_device = { .description = "ZyXEL - omni.net lcd plus usb", .id_table = id_table, .num_ports = 1, + .attach = omninet_attach, .port_probe = omninet_port_probe, .port_remove = omninet_port_remove, .open = omninet_open, @@ -104,6 +106,17 @@ struct omninet_data { __u8 od_outseq; /* Sequence number for bulk_out URBs */ }; +static int omninet_attach(struct usb_serial *serial) +{ + /* The second bulk-out endpoint is used for writing. */ + if (serial->num_bulk_out < 2) { + dev_err(&serial->interface->dev, "missing endpoints\n"); + return -ENODEV; + } + + return 0; +} + static int omninet_port_probe(struct usb_serial_port *port) { struct omninet_data *od; -- cgit v1.2.3 From 5afeef2366db14587b65558bbfd5a067542e07fb Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:39:59 +0100 Subject: USB: serial: oti6858: fix NULL-deref at open Fix NULL-pointer dereference in open() should the device lack the expected endpoints: Unable to handle kernel NULL pointer dereference at virtual address 00000030 ... PC is at oti6858_open+0x30/0x1d0 [oti6858] Note that a missing interrupt-in endpoint would have caused open() to fail. Fixes: 49cdee0ed0fc ("USB: oti6858 usb-serial driver (in Nokia CA-42 cable)") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/oti6858.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c index a4b88bc038b6..b8bf52bf7a94 100644 --- a/drivers/usb/serial/oti6858.c +++ b/drivers/usb/serial/oti6858.c @@ -134,6 +134,7 @@ static int oti6858_chars_in_buffer(struct tty_struct *tty); static int oti6858_tiocmget(struct tty_struct *tty); static int oti6858_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); +static int oti6858_attach(struct usb_serial *serial); static int oti6858_port_probe(struct usb_serial_port *port); static int oti6858_port_remove(struct usb_serial_port *port); @@ -158,6 +159,7 @@ static struct usb_serial_driver oti6858_device = { .write_bulk_callback = oti6858_write_bulk_callback, .write_room = oti6858_write_room, .chars_in_buffer = oti6858_chars_in_buffer, + .attach = oti6858_attach, .port_probe = oti6858_port_probe, .port_remove = oti6858_port_remove, }; @@ -324,6 +326,20 @@ static void send_data(struct work_struct *work) usb_serial_port_softint(port); } +static int oti6858_attach(struct usb_serial *serial) +{ + unsigned char num_ports = serial->num_ports; + + if (serial->num_bulk_in < num_ports || + serial->num_bulk_out < num_ports || + serial->num_interrupt_in < num_ports) { + dev_err(&serial->interface->dev, "missing endpoints\n"); + return -ENODEV; + } + + return 0; +} + static int oti6858_port_probe(struct usb_serial_port *port) { struct oti6858_private *priv; -- cgit v1.2.3 From 76ab439ed1b68778e9059c79ecc5d14de76c89a8 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:40:00 +0100 Subject: USB: serial: pl2303: fix NULL-deref at open Fix NULL-pointer dereference in open() should a type-0 or type-1 device lack the expected endpoints: Unable to handle kernel NULL pointer dereference at virtual address 00000030 ... PC is at pl2303_open+0x38/0xec [pl2303] Note that a missing interrupt-in endpoint would have caused open() to fail. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/pl2303.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index ae682e4eeaef..46fca6b75846 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -220,9 +220,17 @@ static int pl2303_probe(struct usb_serial *serial, static int pl2303_startup(struct usb_serial *serial) { struct pl2303_serial_private *spriv; + unsigned char num_ports = serial->num_ports; enum pl2303_type type = TYPE_01; unsigned char *buf; + if (serial->num_bulk_in < num_ports || + serial->num_bulk_out < num_ports || + serial->num_interrupt_in < num_ports) { + dev_err(&serial->interface->dev, "missing endpoints\n"); + return -ENODEV; + } + spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); if (!spriv) return -ENOMEM; -- cgit v1.2.3 From f09d1886a41e9063b43da493ef0e845ac8afd2fa Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:40:01 +0100 Subject: USB: serial: quatech2: fix sleep-while-atomic in close The write URB was being killed using the synchronous interface while holding a spin lock in close(). Simply drop the lock and busy-flag update, something which would have been taken care of by the completion handler if the URB was in flight. Fixes: f7a33e608d9a ("USB: serial: add quatech2 usb to serial driver") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/quatech2.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c index 659cb8606bd9..5709cc93b083 100644 --- a/drivers/usb/serial/quatech2.c +++ b/drivers/usb/serial/quatech2.c @@ -408,16 +408,12 @@ static void qt2_close(struct usb_serial_port *port) { struct usb_serial *serial; struct qt2_port_private *port_priv; - unsigned long flags; int i; serial = port->serial; port_priv = usb_get_serial_port_data(port); - spin_lock_irqsave(&port_priv->urb_lock, flags); usb_kill_urb(port_priv->write_urb); - port_priv->urb_in_use = false; - spin_unlock_irqrestore(&port_priv->urb_lock, flags); /* flush the port transmit buffer */ i = usb_control_msg(serial->dev, -- cgit v1.2.3 From cc0909248258f679c4bb4cd315565d40abaf6bc6 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:40:02 +0100 Subject: USB: serial: spcp8x5: fix NULL-deref at open Fix NULL-pointer dereference in open() should the device lack the expected endpoints: Unable to handle kernel NULL pointer dereference at virtual address 00000030 ... PC is at spcp8x5_open+0x30/0xd0 [spcp8x5] Fixes: 619a6f1d1423 ("USB: add usb-serial spcp8x5 driver") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/spcp8x5.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c index ef0dbf0703c5..475e6c31b266 100644 --- a/drivers/usb/serial/spcp8x5.c +++ b/drivers/usb/serial/spcp8x5.c @@ -154,6 +154,19 @@ static int spcp8x5_probe(struct usb_serial *serial, return 0; } +static int spcp8x5_attach(struct usb_serial *serial) +{ + unsigned char num_ports = serial->num_ports; + + if (serial->num_bulk_in < num_ports || + serial->num_bulk_out < num_ports) { + dev_err(&serial->interface->dev, "missing endpoints\n"); + return -ENODEV; + } + + return 0; +} + static int spcp8x5_port_probe(struct usb_serial_port *port) { const struct usb_device_id *id = usb_get_serial_data(port->serial); @@ -477,6 +490,7 @@ static struct usb_serial_driver spcp8x5_device = { .tiocmget = spcp8x5_tiocmget, .tiocmset = spcp8x5_tiocmset, .probe = spcp8x5_probe, + .attach = spcp8x5_attach, .port_probe = spcp8x5_port_probe, .port_remove = spcp8x5_port_remove, }; -- cgit v1.2.3 From ef079936d3cd09e63612834fe2698eeada0d8e3f Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 3 Jan 2017 16:40:03 +0100 Subject: USB: serial: ti_usb_3410_5052: fix NULL-deref at open Fix NULL-pointer dereference in open() should a malicious device lack the expected endpoints: Unable to handle kernel NULL pointer dereference at virtual address 00000030 .. [] (ti_open [ti_usb_3410_5052]) from [] (serial_port_activate+0x68/0x98 [usbserial]) Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/ti_usb_3410_5052.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index 8db9d071d940..64b85b8dedf3 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -579,6 +579,13 @@ static int ti_startup(struct usb_serial *serial) goto free_tdev; } + if (serial->num_bulk_in < serial->num_ports || + serial->num_bulk_out < serial->num_ports) { + dev_err(&serial->interface->dev, "missing endpoints\n"); + status = -ENODEV; + goto free_tdev; + } + return 0; free_tdev: -- cgit v1.2.3 From 6def85a396ce7796bd9f4561c6ae8138833f7a52 Mon Sep 17 00:00:00 2001 From: Bin Liu Date: Tue, 3 Jan 2017 18:13:46 -0600 Subject: usb: musb: core: add clear_ep_rxintr() to musb_platform_ops During dma teardown for dequque urb, if musb load is high, musb might generate bogus rx ep interrupt even when the rx fifo is flushed. In such case any of the follow log messages could happen. musb_host_rx 1853: BOGUS RX2 ready, csr 0000, count 0 musb_host_rx 1936: RX3 dma busy, csr 2020 As mentioned in the current inline comment, clearing ep interrupt in the teardown path avoids the bogus interrupt. Clearing ep interrupt is platform dependent, so this patch adds a platform callback to allow glue driver to clear the ep interrupt. This bug seems to be existing since the initial driver for musb support, but I only validated the fix back to v4.1, so only cc stable for v4.1+. cc: stable@vger.kernel.org # 4.1+ Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_core.h | 7 +++++++ drivers/usb/musb/musb_host.c | 10 ++++------ 2 files changed, 11 insertions(+), 6 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index a611e2f67bdc..ade902ea1221 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -216,6 +216,7 @@ struct musb_platform_ops { void (*pre_root_reset_end)(struct musb *musb); void (*post_root_reset_end)(struct musb *musb); int (*phy_callback)(enum musb_vbus_id_status status); + void (*clear_ep_rxintr)(struct musb *musb, int epnum); }; /* @@ -626,6 +627,12 @@ static inline void musb_platform_post_root_reset_end(struct musb *musb) musb->ops->post_root_reset_end(musb); } +static inline void musb_platform_clear_ep_rxintr(struct musb *musb, int epnum) +{ + if (musb->ops->clear_ep_rxintr) + musb->ops->clear_ep_rxintr(musb, epnum); +} + /* * gets the "dr_mode" property from DT and converts it into musb_mode * if the property is not found or not recognized returns MUSB_OTG diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index f6cdbad00dac..ac3a4952abb4 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -2374,12 +2374,11 @@ static int musb_cleanup_urb(struct urb *urb, struct musb_qh *qh) int is_in = usb_pipein(urb->pipe); int status = 0; u16 csr; + struct dma_channel *dma = NULL; musb_ep_select(regs, hw_end); if (is_dma_capable()) { - struct dma_channel *dma; - dma = is_in ? ep->rx_channel : ep->tx_channel; if (dma) { status = ep->musb->dma_controller->channel_abort(dma); @@ -2395,10 +2394,9 @@ static int musb_cleanup_urb(struct urb *urb, struct musb_qh *qh) /* giveback saves bulk toggle */ csr = musb_h_flush_rxfifo(ep, 0); - /* REVISIT we still get an irq; should likely clear the - * endpoint's irq status here to avoid bogus irqs. - * clearing that status is platform-specific... - */ + /* clear the endpoint's irq status here to avoid bogus irqs */ + if (is_dma_capable() && dma) + musb_platform_clear_ep_rxintr(musb, ep->epnum); } else if (ep->epnum) { musb_h_tx_flush_fifo(ep); csr = musb_readw(epio, MUSB_TXCSR); -- cgit v1.2.3 From c48400baa02155a5ddad63e8554602e48782278c Mon Sep 17 00:00:00 2001 From: Bin Liu Date: Tue, 3 Jan 2017 18:13:47 -0600 Subject: usb: musb: dsps: implement clear_ep_rxintr() callback During dma teardown for dequque urb, if musb load is high, musb might generate bogus rx ep interrupt even when the rx fifo is flushed. In such case any of the follow log messages could happen. musb_host_rx 1853: BOGUS RX2 ready, csr 0000, count 0 musb_host_rx 1936: RX3 dma busy, csr 2020 As mentioned in the current inline comment, clearing ep interrupt in the teardown path avoids the bogus interrupt, so implement clear_ep_rxintr() callback. This bug seems to be existing since the initial driver for musb support, but I only validated the fix back to v4.1, so only cc stable for v4.1+. cc: stable@vger.kernel.org # 4.1+ Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_dsps.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index feae1561b9ab..9f125e179acd 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -267,6 +267,17 @@ static void otg_timer(unsigned long _musb) pm_runtime_put_autosuspend(dev); } +void dsps_musb_clear_ep_rxintr(struct musb *musb, int epnum) +{ + u32 epintr; + struct dsps_glue *glue = dev_get_drvdata(musb->controller->parent); + const struct dsps_musb_wrapper *wrp = glue->wrp; + + /* musb->lock might already been held */ + epintr = (1 << epnum) << wrp->rxep_shift; + musb_writel(musb->ctrl_base, wrp->epintr_status, epintr); +} + static irqreturn_t dsps_interrupt(int irq, void *hci) { struct musb *musb = hci; @@ -622,6 +633,7 @@ static struct musb_platform_ops dsps_ops = { .set_mode = dsps_musb_set_mode, .recover = dsps_musb_recover, + .clear_ep_rxintr = dsps_musb_clear_ep_rxintr, }; static u64 musb_dmamask = DMA_BIT_MASK(32); -- cgit v1.2.3 From 8c300fe282fa254ea730c92cb0983e2642dc1fff Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Tue, 3 Jan 2017 18:13:48 -0600 Subject: usb: musb: Fix trying to free already-free IRQ 4 When unloading omap2430, we can get the following splat: WARNING: CPU: 1 PID: 295 at kernel/irq/manage.c:1478 __free_irq+0xa8/0x2c8 Trying to free already-free IRQ 4 ... [] (free_irq) from [] (musbhs_dma_controller_destroy+0x28/0xb0 [musb_hdrc]) [] (musbhs_dma_controller_destroy [musb_hdrc]) from [] (musb_remove+0xf0/0x12c [musb_hdrc]) [] (musb_remove [musb_hdrc]) from [] (platform_drv_remove+0x24/0x3c) ... This is because the irq number in use is 260 nowadays, and the dma controller is using u8 instead of int. Fixes: 6995eb68aab7 ("USB: musb: enable low level DMA operation for Blackfin") Signed-off-by: Tony Lindgren [b-liu@ti.com: added Fixes tag] Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musbhsdma.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/musb/musbhsdma.h b/drivers/usb/musb/musbhsdma.h index f7b13fd25257..a3dcbd55e436 100644 --- a/drivers/usb/musb/musbhsdma.h +++ b/drivers/usb/musb/musbhsdma.h @@ -157,5 +157,5 @@ struct musb_dma_controller { void __iomem *base; u8 channel_count; u8 used_channels; - u8 irq; + int irq; }; -- cgit v1.2.3 From c8bd2ac3b4c6c84c4a7cdceaed626247db698ab2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=A9r=C3=A9my=20Lefaure?= Date: Tue, 3 Jan 2017 18:13:49 -0600 Subject: usb: musb: fix compilation warning on unused function MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The function musb_run_resume_work is called only when CONFIG_PM is enabled. So this function should not be defined when CONFIG_PM is disabled. Otherwise the compiler issues a warning: drivers/usb/musb/musb_core.c:2057:12: error: ‘musb_run_resume_work’ defined but not used [-Werror=unused-function] static int musb_run_resume_work(struct musb *musb) ^~~~~~~~~~~~~~~~~~~~ Signed-off-by: Jérémy Lefaure Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_core.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 9e226468a13e..fca288bbc800 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -2050,6 +2050,7 @@ struct musb_pending_work { struct list_head node; }; +#ifdef CONFIG_PM /* * Called from musb_runtime_resume(), musb_resume(), and * musb_queue_resume_work(). Callers must take musb->lock. @@ -2077,6 +2078,7 @@ static int musb_run_resume_work(struct musb *musb) return error; } +#endif /* * Called to run work if device is active or else queue the work to happen -- cgit v1.2.3 From 5563bb5743cb09bde0d0f4660a5e5b19c26903bf Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=A9r=C3=A9my=20Lefaure?= Date: Tue, 3 Jan 2017 18:13:52 -0600 Subject: usb: musb: blackfin: add bfin_fifo_offset in bfin_ops MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The function bfin_fifo_offset is defined but not used: drivers/usb/musb/blackfin.c:36:12: warning: ‘bfin_fifo_offset’ defined but not used [-Wunused-function] static u32 bfin_fifo_offset(u8 epnum) ^~~~~~~~~~~~~~~~ Adding bfin_fifo_offset to bfin_ops fixes this warning and allows musb core to call this function instead of default_fifo_offset. Fixes: cc92f6818f6e ("usb: musb: Populate new IO functions for blackfin") Signed-off-by: Jérémy Lefaure Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/blackfin.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c index 310238c6b5cd..896798071817 100644 --- a/drivers/usb/musb/blackfin.c +++ b/drivers/usb/musb/blackfin.c @@ -469,6 +469,7 @@ static const struct musb_platform_ops bfin_ops = { .init = bfin_musb_init, .exit = bfin_musb_exit, + .fifo_offset = bfin_fifo_offset, .readb = bfin_readb, .writeb = bfin_writeb, .readw = bfin_readw, -- cgit v1.2.3 From 3bc02bce908c7250781376052248f5cd60a4e3d4 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Wed, 14 Dec 2016 15:37:30 +0100 Subject: usb: hub: Move hub_port_disable() to fix warning if PM is disabled MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If CONFIG_PM=n: drivers/usb/core/hub.c:107: warning: ‘hub_usb3_port_prepare_disable’ declared inline after being called drivers/usb/core/hub.c:107: warning: previous declaration of ‘hub_usb3_port_prepare_disable’ was here To fix this, move hub_port_disable() after hub_usb3_port_prepare_disable(), and adjust forward declarations. Fixes: 37be66767e3cae4f ("usb: hub: Fix auto-remount of safely removed or ejected USB-3 devices") Signed-off-by: Geert Uytterhoeven Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 59 +++++++++++++++++++++++++------------------------- 1 file changed, 29 insertions(+), 30 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 1fa5c0f29c64..a56c75e09786 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -103,8 +103,7 @@ EXPORT_SYMBOL_GPL(ehci_cf_port_reset_rwsem); static void hub_release(struct kref *kref); static int usb_reset_and_verify_device(struct usb_device *udev); -static void hub_usb3_port_prepare_disable(struct usb_hub *hub, - struct usb_port *port_dev); +static int hub_port_disable(struct usb_hub *hub, int port1, int set_state); static inline char *portspeed(struct usb_hub *hub, int portstatus) { @@ -902,34 +901,6 @@ static int hub_set_port_link_state(struct usb_hub *hub, int port1, USB_PORT_FEAT_LINK_STATE); } -/* - * USB-3 does not have a similar link state as USB-2 that will avoid negotiating - * a connection with a plugged-in cable but will signal the host when the cable - * is unplugged. Disable remote wake and set link state to U3 for USB-3 devices - */ -static int hub_port_disable(struct usb_hub *hub, int port1, int set_state) -{ - struct usb_port *port_dev = hub->ports[port1 - 1]; - struct usb_device *hdev = hub->hdev; - int ret = 0; - - if (!hub->error) { - if (hub_is_superspeed(hub->hdev)) { - hub_usb3_port_prepare_disable(hub, port_dev); - ret = hub_set_port_link_state(hub, port_dev->portnum, - USB_SS_PORT_LS_U3); - } else { - ret = usb_clear_port_feature(hdev, port1, - USB_PORT_FEAT_ENABLE); - } - } - if (port_dev->child && set_state) - usb_set_device_state(port_dev->child, USB_STATE_NOTATTACHED); - if (ret && ret != -ENODEV) - dev_err(&port_dev->dev, "cannot disable (err = %d)\n", ret); - return ret; -} - /* * Disable a port and mark a logical connect-change event, so that some * time later hub_wq will disconnect() any existing usb_device on the port @@ -4162,6 +4133,34 @@ static int hub_handle_remote_wakeup(struct usb_hub *hub, unsigned int port, #endif /* CONFIG_PM */ +/* + * USB-3 does not have a similar link state as USB-2 that will avoid negotiating + * a connection with a plugged-in cable but will signal the host when the cable + * is unplugged. Disable remote wake and set link state to U3 for USB-3 devices + */ +static int hub_port_disable(struct usb_hub *hub, int port1, int set_state) +{ + struct usb_port *port_dev = hub->ports[port1 - 1]; + struct usb_device *hdev = hub->hdev; + int ret = 0; + + if (!hub->error) { + if (hub_is_superspeed(hub->hdev)) { + hub_usb3_port_prepare_disable(hub, port_dev); + ret = hub_set_port_link_state(hub, port_dev->portnum, + USB_SS_PORT_LS_U3); + } else { + ret = usb_clear_port_feature(hdev, port1, + USB_PORT_FEAT_ENABLE); + } + } + if (port_dev->child && set_state) + usb_set_device_state(port_dev->child, USB_STATE_NOTATTACHED); + if (ret && ret != -ENODEV) + dev_err(&port_dev->dev, "cannot disable (err = %d)\n", ret); + return ret; +} + /* USB 2.0 spec, 7.1.7.3 / fig 7-29: * -- cgit v1.2.3 From 674aea07e38200ea6f31ff6d5f200f0cf6cdb325 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Mon, 2 Jan 2017 15:26:17 +0100 Subject: usb: storage: unusual_uas: Add JMicron JMS56x to unusual device This device gives the following error on detection. xhci_hcd 0000:00:11.0: ERROR Transfer event for disabled endpoint or incorrect stream ring The same error is not seen when it is added to unusual_device list with US_FL_NO_REPORT_OPCODES passed. Signed-off-by: George Cherian Signed-off-by: Oliver Neukum CC: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/unusual_devs.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index af3c7eecff91..16cc18369111 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -2109,6 +2109,13 @@ UNUSUAL_DEV( 0x152d, 0x2566, 0x0114, 0x0114, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_BROKEN_FUA ), +/* Reported-by George Cherian */ +UNUSUAL_DEV(0x152d, 0x9561, 0x0000, 0x9999, + "JMicron", + "JMS56x", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_NO_REPORT_OPCODES), + /* * Entrega Technologies U1-SC25 (later Xircom PortGear PGSCSI) * and Mac USB Dock USB-SCSI */ -- cgit v1.2.3 From 8f12dc24490bde0d604b8bdfca05ea4b06a624a7 Mon Sep 17 00:00:00 2001 From: Peter Rosin Date: Thu, 22 Dec 2016 08:43:55 +0100 Subject: usb: ohci-at91: use descriptor-based gpio APIs correctly The gpiod_get* function family does not want the -gpio suffix. Use devm_gpiod_get_index_optional instead of devm_gpiod_get_optional. The descriptor based APIs handle active high/low automatically. The vbus-gpios are output, request enable while getting the gpio. Don't try to get any vbus-gpios for ports outside num-ports. WTF? Big sigh. Fixes: 054d4b7b577d ("usb: ohci-at91: Use descriptor-based gpio APIs") Signed-off-by: Peter Rosin Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ohci-at91.c | 24 ++++++++++-------------- 1 file changed, 10 insertions(+), 14 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c index be9e63836881..414e3c376dbb 100644 --- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -43,7 +43,6 @@ struct at91_usbh_data { struct gpio_desc *overcurrent_pin[AT91_MAX_USBH_PORTS]; u8 ports; /* number of ports on root hub */ u8 overcurrent_supported; - u8 vbus_pin_active_low[AT91_MAX_USBH_PORTS]; u8 overcurrent_status[AT91_MAX_USBH_PORTS]; u8 overcurrent_changed[AT91_MAX_USBH_PORTS]; }; @@ -266,8 +265,7 @@ static void ohci_at91_usb_set_power(struct at91_usbh_data *pdata, int port, int if (!valid_port(port)) return; - gpiod_set_value(pdata->vbus_pin[port], - pdata->vbus_pin_active_low[port] ^ enable); + gpiod_set_value(pdata->vbus_pin[port], enable); } static int ohci_at91_usb_get_power(struct at91_usbh_data *pdata, int port) @@ -275,8 +273,7 @@ static int ohci_at91_usb_get_power(struct at91_usbh_data *pdata, int port) if (!valid_port(port)) return -EINVAL; - return gpiod_get_value(pdata->vbus_pin[port]) ^ - pdata->vbus_pin_active_low[port]; + return gpiod_get_value(pdata->vbus_pin[port]); } /* @@ -533,18 +530,17 @@ static int ohci_hcd_at91_drv_probe(struct platform_device *pdev) pdata->ports = ports; at91_for_each_port(i) { - pdata->vbus_pin[i] = devm_gpiod_get_optional(&pdev->dev, - "atmel,vbus-gpio", - GPIOD_IN); + if (i >= pdata->ports) + break; + + pdata->vbus_pin[i] = + devm_gpiod_get_index_optional(&pdev->dev, "atmel,vbus", + i, GPIOD_OUT_HIGH); if (IS_ERR(pdata->vbus_pin[i])) { err = PTR_ERR(pdata->vbus_pin[i]); dev_err(&pdev->dev, "unable to claim gpio \"vbus\": %d\n", err); continue; } - - pdata->vbus_pin_active_low[i] = gpiod_get_value(pdata->vbus_pin[i]); - - ohci_at91_usb_set_power(pdata, i, 1); } at91_for_each_port(i) { @@ -552,8 +548,8 @@ static int ohci_hcd_at91_drv_probe(struct platform_device *pdev) break; pdata->overcurrent_pin[i] = - devm_gpiod_get_optional(&pdev->dev, - "atmel,oc-gpio", GPIOD_IN); + devm_gpiod_get_index_optional(&pdev->dev, "atmel,oc", + i, GPIOD_IN); if (IS_ERR(pdata->overcurrent_pin[i])) { err = PTR_ERR(pdata->overcurrent_pin[i]); dev_err(&pdev->dev, "unable to claim gpio \"overcurrent\": %d\n", err); -- cgit v1.2.3 From 0a8fd1346254974c3a852338508e4a4cddbb35f1 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Mon, 19 Dec 2016 12:03:41 -0500 Subject: USB: fix problems with duplicate endpoint addresses When checking a new device's descriptors, the USB core does not check for duplicate endpoint addresses. This can cause a problem when the sysfs files for those endpoints are created; trying to create multiple files with the same name will provoke a WARNING: WARNING: CPU: 2 PID: 865 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x8a/0xa0 sysfs: cannot create duplicate filename '/devices/platform/dummy_hcd.0/usb2/2-1/2-1:64.0/ep_05' Kernel panic - not syncing: panic_on_warn set ... CPU: 2 PID: 865 Comm: kworker/2:1 Not tainted 4.9.0-rc7+ #34 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Workqueue: usb_hub_wq hub_event ffff88006bee64c8 ffffffff81f96b8a ffffffff00000001 1ffff1000d7dcc2c ffffed000d7dcc24 0000000000000001 0000000041b58ab3 ffffffff8598b510 ffffffff81f968f8 ffffffff850fee20 ffffffff85cff020 dffffc0000000000 Call Trace: [< inline >] __dump_stack lib/dump_stack.c:15 [] dump_stack+0x292/0x398 lib/dump_stack.c:51 [] panic+0x1cb/0x3a9 kernel/panic.c:179 [] __warn+0x1c4/0x1e0 kernel/panic.c:542 [] warn_slowpath_fmt+0xc5/0x110 kernel/panic.c:565 [] sysfs_warn_dup+0x8a/0xa0 fs/sysfs/dir.c:30 [] sysfs_create_dir_ns+0x178/0x1d0 fs/sysfs/dir.c:59 [< inline >] create_dir lib/kobject.c:71 [] kobject_add_internal+0x227/0xa60 lib/kobject.c:229 [< inline >] kobject_add_varg lib/kobject.c:366 [] kobject_add+0x139/0x220 lib/kobject.c:411 [] device_add+0x353/0x1660 drivers/base/core.c:1088 [] device_register+0x1d/0x20 drivers/base/core.c:1206 [] usb_create_ep_devs+0x163/0x260 drivers/usb/core/endpoint.c:195 [] create_intf_ep_devs+0x13b/0x200 drivers/usb/core/message.c:1030 [] usb_set_configuration+0x1083/0x18d0 drivers/usb/core/message.c:1937 [] generic_probe+0x6e/0xe0 drivers/usb/core/generic.c:172 [] usb_probe_device+0xaa/0xe0 drivers/usb/core/driver.c:263 This patch prevents the problem by checking for duplicate endpoint addresses during enumeration and skipping any duplicates. Signed-off-by: Alan Stern Reported-by: Andrey Konovalov Tested-by: Andrey Konovalov CC: Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/config.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index 0aa9e7d697a5..25dbd8c7aec7 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -239,6 +239,16 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum, if (ifp->desc.bNumEndpoints >= num_ep) goto skip_to_next_endpoint_or_interface_descriptor; + /* Check for duplicate endpoint addresses */ + for (i = 0; i < ifp->desc.bNumEndpoints; ++i) { + if (ifp->endpoint[i].desc.bEndpointAddress == + d->bEndpointAddress) { + dev_warn(ddev, "config %d interface %d altsetting %d has a duplicate endpoint with address 0x%X, skipping\n", + cfgno, inum, asnum, d->bEndpointAddress); + goto skip_to_next_endpoint_or_interface_descriptor; + } + } + endpoint = &ifp->endpoint[ifp->desc.bNumEndpoints]; ++ifp->desc.bNumEndpoints; -- cgit v1.2.3 From 4e2da44691cffbfffb1535f478d19bc2dca3e62b Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 6 Jan 2017 19:15:10 +0100 Subject: USB: serial: ch341: fix initial modem-control state DTR and RTS will be asserted by the tty-layer when the port is opened and deasserted on close (if HUPCL is set). Make sure the initial state is not-asserted before the port is first opened as well. Fixes: 664d5df92e88 ("USB: usb-serial ch341: support for DTR/RTS/CTS") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/ch341.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index 2597b83a8ae2..d133e72fe888 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -258,7 +258,6 @@ static int ch341_port_probe(struct usb_serial_port *port) spin_lock_init(&priv->lock); priv->baud_rate = DEFAULT_BAUD_RATE; - priv->line_control = CH341_BIT_RTS | CH341_BIT_DTR; r = ch341_configure(port->serial->dev, priv); if (r < 0) -- cgit v1.2.3 From a20047f36e2f6a1eea4f1fd261aaa55882369868 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 6 Jan 2017 19:15:11 +0100 Subject: USB: serial: ch341: fix open and resume after B0 The private baud_rate variable is used to configure the port at open and reset-resume and must never be set to (and left at) zero or reset-resume and all further open attempts will fail. Fixes: aa91def41a7b ("USB: ch341: set tty baud speed according to tty struct") Fixes: 664d5df92e88 ("USB: usb-serial ch341: support for DTR/RTS/CTS") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/ch341.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index d133e72fe888..6279df905c14 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -355,7 +355,6 @@ static void ch341_set_termios(struct tty_struct *tty, baud_rate = tty_get_baud_rate(tty); - priv->baud_rate = baud_rate; ctrl = CH341_LCR_ENABLE_RX | CH341_LCR_ENABLE_TX; switch (C_CSIZE(tty)) { @@ -388,6 +387,9 @@ static void ch341_set_termios(struct tty_struct *tty, spin_lock_irqsave(&priv->lock, flags); priv->line_control |= (CH341_BIT_DTR | CH341_BIT_RTS); spin_unlock_irqrestore(&priv->lock, flags); + + priv->baud_rate = baud_rate; + r = ch341_init_set_baudrate(port->serial->dev, priv, ctrl); if (r < 0 && old_termios) { priv->baud_rate = tty_termios_baud_rate(old_termios); -- cgit v1.2.3 From 030ee7ae52a46a2be52ccc8242c4a330aba8d38e Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 6 Jan 2017 19:15:12 +0100 Subject: USB: serial: ch341: fix modem-control and B0 handling The modem-control signals are managed by the tty-layer during open and should not be asserted prematurely when set_termios is called from driver open. Also make sure that the signals are asserted only when changing speed from B0. Fixes: 664d5df92e88 ("USB: usb-serial ch341: support for DTR/RTS/CTS") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/ch341.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index 6279df905c14..0cc5056b304d 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -384,10 +384,6 @@ static void ch341_set_termios(struct tty_struct *tty, ctrl |= CH341_LCR_STOP_BITS_2; if (baud_rate) { - spin_lock_irqsave(&priv->lock, flags); - priv->line_control |= (CH341_BIT_DTR | CH341_BIT_RTS); - spin_unlock_irqrestore(&priv->lock, flags); - priv->baud_rate = baud_rate; r = ch341_init_set_baudrate(port->serial->dev, priv, ctrl); @@ -395,14 +391,16 @@ static void ch341_set_termios(struct tty_struct *tty, priv->baud_rate = tty_termios_baud_rate(old_termios); tty_termios_copy_hw(&tty->termios, old_termios); } - } else { - spin_lock_irqsave(&priv->lock, flags); - priv->line_control &= ~(CH341_BIT_DTR | CH341_BIT_RTS); - spin_unlock_irqrestore(&priv->lock, flags); } - ch341_set_handshake(port->serial->dev, priv->line_control); + spin_lock_irqsave(&priv->lock, flags); + if (C_BAUD(tty) == B0) + priv->line_control &= ~(CH341_BIT_DTR | CH341_BIT_RTS); + else if (old_termios && (old_termios->c_cflag & CBAUD) == B0) + priv->line_control |= (CH341_BIT_DTR | CH341_BIT_RTS); + spin_unlock_irqrestore(&priv->lock, flags); + ch341_set_handshake(port->serial->dev, priv->line_control); } static void ch341_break_ctl(struct tty_struct *tty, int break_state) -- cgit v1.2.3 From f2950b78547ffb8475297ada6b92bc2d774d5461 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 6 Jan 2017 19:15:13 +0100 Subject: USB: serial: ch341: fix open error handling Make sure to stop the interrupt URB before returning on errors during open. Fixes: 664d5df92e88 ("USB: usb-serial ch341: support for DTR/RTS/CTS") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/ch341.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index 0cc5056b304d..8f41d4385f1c 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -319,7 +319,7 @@ static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port) r = ch341_configure(serial->dev, priv); if (r) - goto out; + return r; if (tty) ch341_set_termios(tty, port, NULL); @@ -329,12 +329,19 @@ static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port) if (r) { dev_err(&port->dev, "%s - failed to submit interrupt urb: %d\n", __func__, r); - goto out; + return r; } r = usb_serial_generic_open(tty, port); + if (r) + goto err_kill_interrupt_urb; + + return 0; + +err_kill_interrupt_urb: + usb_kill_urb(port->interrupt_in_urb); -out: return r; + return r; } /* Old_termios contains the original termios settings and -- cgit v1.2.3 From ce5e292828117d1b71cbd3edf9e9137cf31acd30 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 6 Jan 2017 19:15:14 +0100 Subject: USB: serial: ch341: fix resume after reset Fix reset-resume handling which failed to resubmit the read and interrupt URBs, thereby leaving a port that was open before suspend in a broken state until closed and reopened. Fixes: 1ded7ea47b88 ("USB: ch341 serial: fix port number changed after resume") Fixes: 2bfd1c96a9fb ("USB: serial: ch341: remove reset_resume callback") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/ch341.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index 8f41d4385f1c..5343d65f3b52 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -582,14 +582,23 @@ static int ch341_tiocmget(struct tty_struct *tty) static int ch341_reset_resume(struct usb_serial *serial) { - struct ch341_private *priv; - - priv = usb_get_serial_port_data(serial->port[0]); + struct usb_serial_port *port = serial->port[0]; + struct ch341_private *priv = usb_get_serial_port_data(port); + int ret; /* reconfigure ch341 serial port after bus-reset */ ch341_configure(serial->dev, priv); - return 0; + if (tty_port_initialized(&port->port)) { + ret = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO); + if (ret) { + dev_err(&port->dev, "failed to submit interrupt urb: %d\n", + ret); + return ret; + } + } + + return usb_serial_generic_resume(serial); } static struct usb_serial_driver ch341_device = { -- cgit v1.2.3 From 3cca8624b6624e7ffb87dcd8a0a05bef9b50e97b Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 6 Jan 2017 19:15:15 +0100 Subject: USB: serial: ch341: fix line settings after reset-resume A recent change added support for modifying the default line-control settings, but did not make sure that the modified settings were used as part of reconfiguration after a device has been reset during resume. This caused a port that was open before suspend to be unusable until being closed and reopened. Fixes: ba781bdf8662 ("USB: serial: ch341: add support for parity, frame length, stop bits") Signed-off-by: Johan Hovold --- drivers/usb/serial/ch341.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index 5343d65f3b52..eabdd05a2147 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -95,6 +95,7 @@ struct ch341_private { unsigned baud_rate; /* set baud rate */ u8 line_control; /* set line control value RTS/DTR */ u8 line_status; /* active status of modem control inputs */ + u8 lcr; }; static void ch341_set_termios(struct tty_struct *tty, @@ -232,7 +233,7 @@ static int ch341_configure(struct usb_device *dev, struct ch341_private *priv) if (r < 0) goto out; - r = ch341_init_set_baudrate(dev, priv, 0); + r = ch341_init_set_baudrate(dev, priv, priv->lcr); if (r < 0) goto out; @@ -397,6 +398,8 @@ static void ch341_set_termios(struct tty_struct *tty, if (r < 0 && old_termios) { priv->baud_rate = tty_termios_baud_rate(old_termios); tty_termios_copy_hw(&tty->termios, old_termios); + } else if (r == 0) { + priv->lcr = ctrl; } } -- cgit v1.2.3 From 55fa15b5987db22b4f35d3f0798928c126be5f1c Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 6 Jan 2017 19:15:16 +0100 Subject: USB: serial: ch341: fix baud rate and line-control handling Revert to using direct register writes to set the divisor and line-control registers. A recent change switched to using the init vendor command to update these registers, something which also enabled support for CH341A devices. It turns out that simply setting bit 7 in the divisor register is sufficient to support CH341A and specifically prevent data from being buffered until a full endpoint-size packet (32 bytes) has been received. Using the init command also had the side-effect of temporarily deasserting the DTR/RTS signals on every termios change (including initialisation on open) something which for example could cause problems in setups where DTR is used to trigger a reset. Fixes: 4e46c410e050 ("USB: serial: ch341: reinitialize chip on reconfiguration") Signed-off-by: Johan Hovold --- drivers/usb/serial/ch341.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index eabdd05a2147..8d7b0847109b 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -133,8 +133,8 @@ static int ch341_control_in(struct usb_device *dev, return r; } -static int ch341_init_set_baudrate(struct usb_device *dev, - struct ch341_private *priv, unsigned ctrl) +static int ch341_set_baudrate_lcr(struct usb_device *dev, + struct ch341_private *priv, u8 lcr) { short a; int r; @@ -157,9 +157,19 @@ static int ch341_init_set_baudrate(struct usb_device *dev, factor = 0x10000 - factor; a = (factor & 0xff00) | divisor; - /* 0x9c is "enable SFR_UART Control register and timer" */ - r = ch341_control_out(dev, CH341_REQ_SERIAL_INIT, - 0x9c | (ctrl << 8), a | 0x80); + /* + * CH341A buffers data until a full endpoint-size packet (32 bytes) + * has been received unless bit 7 is set. + */ + a |= BIT(7); + + r = ch341_control_out(dev, CH341_REQ_WRITE_REG, 0x1312, a); + if (r) + return r; + + r = ch341_control_out(dev, CH341_REQ_WRITE_REG, 0x2518, lcr); + if (r) + return r; return r; } @@ -233,7 +243,7 @@ static int ch341_configure(struct usb_device *dev, struct ch341_private *priv) if (r < 0) goto out; - r = ch341_init_set_baudrate(dev, priv, priv->lcr); + r = ch341_set_baudrate_lcr(dev, priv, priv->lcr); if (r < 0) goto out; @@ -394,7 +404,7 @@ static void ch341_set_termios(struct tty_struct *tty, if (baud_rate) { priv->baud_rate = baud_rate; - r = ch341_init_set_baudrate(port->serial->dev, priv, ctrl); + r = ch341_set_baudrate_lcr(port->serial->dev, priv, ctrl); if (r < 0 && old_termios) { priv->baud_rate = tty_termios_baud_rate(old_termios); tty_termios_copy_hw(&tty->termios, old_termios); -- cgit v1.2.3 From 146cc8a17a3b4996f6805ee5c080e7101277c410 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 10 Jan 2017 12:05:37 +0100 Subject: USB: serial: kl5kusb105: fix line-state error handling The current implementation failed to detect short transfers when attempting to read the line state, and also, to make things worse, logged the content of the uninitialised heap transfer buffer. Fixes: abf492e7b3ae ("USB: kl5kusb105: fix DMA buffers on stack") Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold --- drivers/usb/serial/kl5kusb105.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c index 0ee190fc1bf8..6cb45757818f 100644 --- a/drivers/usb/serial/kl5kusb105.c +++ b/drivers/usb/serial/kl5kusb105.c @@ -192,10 +192,11 @@ static int klsi_105_get_line_state(struct usb_serial_port *port, status_buf, KLSI_STATUSBUF_LEN, 10000 ); - if (rc < 0) - dev_err(&port->dev, "Reading line status failed (error = %d)\n", - rc); - else { + if (rc != KLSI_STATUSBUF_LEN) { + dev_err(&port->dev, "reading line status failed: %d\n", rc); + if (rc >= 0) + rc = -EIO; + } else { status = get_unaligned_le16(status_buf); dev_info(&port->serial->dev->dev, "read status %x %x\n", -- cgit v1.2.3 From 620f1a632ebcc9811c2f8009ba52297c7006f805 Mon Sep 17 00:00:00 2001 From: Andy Lutomirski Date: Tue, 13 Dec 2016 18:50:13 -0800 Subject: wusbcore: Fix one more crypto-on-the-stack bug The driver put a constant buffer of all zeros on the stack and pointed a scatterlist entry at it. This doesn't work with virtual stacks. Use ZERO_PAGE instead. Cc: stable@vger.kernel.org # 4.9 only Reported-by: Eric Biggers Signed-off-by: Andy Lutomirski Signed-off-by: Greg Kroah-Hartman --- drivers/usb/wusbcore/crypto.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/wusbcore/crypto.c b/drivers/usb/wusbcore/crypto.c index 79451f7ef1b7..062c205f0046 100644 --- a/drivers/usb/wusbcore/crypto.c +++ b/drivers/usb/wusbcore/crypto.c @@ -216,7 +216,6 @@ static int wusb_ccm_mac(struct crypto_skcipher *tfm_cbc, struct scatterlist sg[4], sg_dst; void *dst_buf; size_t dst_size; - const u8 bzero[16] = { 0 }; u8 iv[crypto_skcipher_ivsize(tfm_cbc)]; size_t zero_padding; @@ -261,7 +260,7 @@ static int wusb_ccm_mac(struct crypto_skcipher *tfm_cbc, sg_set_buf(&sg[1], &scratch->b1, sizeof(scratch->b1)); sg_set_buf(&sg[2], b, blen); /* 0 if well behaved :) */ - sg_set_buf(&sg[3], bzero, zero_padding); + sg_set_page(&sg[3], ZERO_PAGE(0), zero_padding, 0); sg_init_one(&sg_dst, dst_buf, dst_size); skcipher_request_set_tfm(req, tfm_cbc); -- cgit v1.2.3 From 7b6c1b4c0e1e44544aa18161dba6a741c080a7ef Mon Sep 17 00:00:00 2001 From: Bin Liu Date: Tue, 10 Jan 2017 10:46:00 -0600 Subject: usb: musb: fix runtime PM in debugfs MUSB driver now has runtime PM support, but the debugfs driver misses the PM _get/_put() calls, which could cause MUSB register access failure. Cc: stable@vger.kernel.org # 4.9+ Acked-by: Tony Lindgren Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_debugfs.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/musb/musb_debugfs.c b/drivers/usb/musb/musb_debugfs.c index 4fef50e5c8c1..dd70c88419d2 100644 --- a/drivers/usb/musb/musb_debugfs.c +++ b/drivers/usb/musb/musb_debugfs.c @@ -114,6 +114,7 @@ static int musb_regdump_show(struct seq_file *s, void *unused) unsigned i; seq_printf(s, "MUSB (M)HDRC Register Dump\n"); + pm_runtime_get_sync(musb->controller); for (i = 0; i < ARRAY_SIZE(musb_regmap); i++) { switch (musb_regmap[i].size) { @@ -132,6 +133,8 @@ static int musb_regdump_show(struct seq_file *s, void *unused) } } + pm_runtime_mark_last_busy(musb->controller); + pm_runtime_put_autosuspend(musb->controller); return 0; } @@ -145,7 +148,10 @@ static int musb_test_mode_show(struct seq_file *s, void *unused) struct musb *musb = s->private; unsigned test; + pm_runtime_get_sync(musb->controller); test = musb_readb(musb->mregs, MUSB_TESTMODE); + pm_runtime_mark_last_busy(musb->controller); + pm_runtime_put_autosuspend(musb->controller); if (test & MUSB_TEST_FORCE_HOST) seq_printf(s, "force host\n"); @@ -194,11 +200,12 @@ static ssize_t musb_test_mode_write(struct file *file, u8 test; char buf[18]; + pm_runtime_get_sync(musb->controller); test = musb_readb(musb->mregs, MUSB_TESTMODE); if (test) { dev_err(musb->controller, "Error: test mode is already set. " "Please do USB Bus Reset to start a new test.\n"); - return count; + goto ret; } memset(buf, 0x00, sizeof(buf)); @@ -234,6 +241,9 @@ static ssize_t musb_test_mode_write(struct file *file, musb_writeb(musb->mregs, MUSB_TESTMODE, test); +ret: + pm_runtime_mark_last_busy(musb->controller); + pm_runtime_put_autosuspend(musb->controller); return count; } @@ -254,8 +264,13 @@ static int musb_softconnect_show(struct seq_file *s, void *unused) switch (musb->xceiv->otg->state) { case OTG_STATE_A_HOST: case OTG_STATE_A_WAIT_BCON: + pm_runtime_get_sync(musb->controller); + reg = musb_readb(musb->mregs, MUSB_DEVCTL); connect = reg & MUSB_DEVCTL_SESSION ? 1 : 0; + + pm_runtime_mark_last_busy(musb->controller); + pm_runtime_put_autosuspend(musb->controller); break; default: connect = -1; @@ -284,6 +299,7 @@ static ssize_t musb_softconnect_write(struct file *file, if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT; + pm_runtime_get_sync(musb->controller); if (!strncmp(buf, "0", 1)) { switch (musb->xceiv->otg->state) { case OTG_STATE_A_HOST: @@ -314,6 +330,8 @@ static ssize_t musb_softconnect_write(struct file *file, } } + pm_runtime_mark_last_busy(musb->controller); + pm_runtime_put_autosuspend(musb->controller); return count; } -- cgit v1.2.3 From 2d5a9c72d0c4ac73cf97f4b7814ed6c44b1e49ae Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 6 Jan 2017 19:15:18 +0100 Subject: USB: serial: ch341: fix control-message error handling A short control transfer would currently fail to be detected, something which could lead to stale buffer data being used as valid input. Check for short transfers, and make sure to log any transfer errors. Note that this also avoids leaking heap data to user space (TIOCMGET) and the remote device (break control). Fixes: 6ce76104781a ("USB: Driver for CH341 USB-serial adaptor") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/ch341.c | 32 +++++++++++++++++++++----------- 1 file changed, 21 insertions(+), 11 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index 8d7b0847109b..95aa5233726c 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -113,6 +113,8 @@ static int ch341_control_out(struct usb_device *dev, u8 request, r = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, value, index, NULL, 0, DEFAULT_TIMEOUT); + if (r < 0) + dev_err(&dev->dev, "failed to send control message: %d\n", r); return r; } @@ -130,7 +132,20 @@ static int ch341_control_in(struct usb_device *dev, r = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, value, index, buf, bufsize, DEFAULT_TIMEOUT); - return r; + if (r < bufsize) { + if (r >= 0) { + dev_err(&dev->dev, + "short control message received (%d < %u)\n", + r, bufsize); + r = -EIO; + } + + dev_err(&dev->dev, "failed to receive control message: %d\n", + r); + return r; + } + + return 0; } static int ch341_set_baudrate_lcr(struct usb_device *dev, @@ -181,9 +196,9 @@ static int ch341_set_handshake(struct usb_device *dev, u8 control) static int ch341_get_status(struct usb_device *dev, struct ch341_private *priv) { + const unsigned int size = 2; char *buffer; int r; - const unsigned size = 8; unsigned long flags; buffer = kmalloc(size, GFP_KERNEL); @@ -194,14 +209,9 @@ static int ch341_get_status(struct usb_device *dev, struct ch341_private *priv) if (r < 0) goto out; - /* setup the private status if available */ - if (r == 2) { - r = 0; - spin_lock_irqsave(&priv->lock, flags); - priv->line_status = (~(*buffer)) & CH341_BITS_MODEM_STAT; - spin_unlock_irqrestore(&priv->lock, flags); - } else - r = -EPROTO; + spin_lock_irqsave(&priv->lock, flags); + priv->line_status = (~(*buffer)) & CH341_BITS_MODEM_STAT; + spin_unlock_irqrestore(&priv->lock, flags); out: kfree(buffer); return r; @@ -211,9 +221,9 @@ out: kfree(buffer); static int ch341_configure(struct usb_device *dev, struct ch341_private *priv) { + const unsigned int size = 2; char *buffer; int r; - const unsigned size = 8; buffer = kmalloc(size, GFP_KERNEL); if (!buffer) -- cgit v1.2.3 From d6169d04097fd9ddf811e63eae4e5cd71e6666e2 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Wed, 11 Jan 2017 17:10:34 +0200 Subject: xhci: fix deadlock at host remove by running watchdog correctly If a URB is killed while the host is removed we can end up in a situation where the hub thread takes the roothub device lock, and waits for the URB to be given back by xhci-hcd, blocking the host remove code. xhci-hcd tries to stop the endpoint and give back the urb, but can't as the host is removed from PCI bus at the same time, preventing the normal way of giving back urb. Instead we need to rely on the stop command timeout function to give back the urb. This xhci_stop_endpoint_command_watchdog() timeout function used a XHCI_STATE_DYING flag to indicate if the timeout function is already running, but later this flag has been taking into use in other places to mark that xhci is dying. Remove checks for XHCI_STATE_DYING in xhci_urb_dequeue. We are still checking that reading from pci state does not return 0xffffffff or that host is not halted before trying to stop the endpoint. This whole area of stopping endpoints, giving back URBs, and the wathdog timeout need rework, this fix focuses on solving a specific deadlock issue that we can then send to stable before any major rework. Cc: Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 11 ----------- drivers/usb/host/xhci.c | 13 ------------- 2 files changed, 24 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 25f522b09dd9..e32029a31ca4 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -913,17 +913,6 @@ void xhci_stop_endpoint_command_watchdog(unsigned long arg) spin_lock_irqsave(&xhci->lock, flags); ep->stop_cmds_pending--; - if (xhci->xhc_state & XHCI_STATE_REMOVING) { - spin_unlock_irqrestore(&xhci->lock, flags); - return; - } - if (xhci->xhc_state & XHCI_STATE_DYING) { - xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, - "Stop EP timer ran, but another timer marked " - "xHCI as DYING, exiting."); - spin_unlock_irqrestore(&xhci->lock, flags); - return; - } if (!(ep->stop_cmds_pending == 0 && (ep->ep_state & EP_HALT_PENDING))) { xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, "Stop EP timer ran, but no command pending, " diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 0c8deb9ed42d..9a0ec116654a 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1534,19 +1534,6 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) xhci_urb_free_priv(urb_priv); return ret; } - if ((xhci->xhc_state & XHCI_STATE_DYING) || - (xhci->xhc_state & XHCI_STATE_HALTED)) { - xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, - "Ep 0x%x: URB %p to be canceled on " - "non-responsive xHCI host.", - urb->ep->desc.bEndpointAddress, urb); - /* Let the stop endpoint command watchdog timer (which set this - * state) finish cleaning up the endpoint TD lists. We must - * have caught it in the middle of dropping a lock and giving - * back an URB. - */ - goto done; - } ep_index = xhci_get_endpoint_index(&urb->ep->desc); ep = &xhci->devs[urb->dev->slot_id]->eps[ep_index]; -- cgit v1.2.3 From 990758c53eafe5a220a780ed12e7b4d51b3df032 Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Wed, 4 Jan 2017 06:30:16 +0100 Subject: usb: gadget: composite: Fix function used to free memory 'cdev->os_desc_req' has been allocated with 'usb_ep_alloc_request()' so 'usb_ep_free_request()' should be used to free it. Signed-off-by: Christophe JAILLET Signed-off-by: Felipe Balbi --- drivers/usb/gadget/composite.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 002822d98fda..49d685ad0da9 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -2147,7 +2147,7 @@ int composite_os_desc_req_prepare(struct usb_composite_dev *cdev, cdev->os_desc_req->buf = kmalloc(4096, GFP_KERNEL); if (!cdev->os_desc_req->buf) { ret = -ENOMEM; - kfree(cdev->os_desc_req); + usb_ep_free_request(ep0, cdev->os_desc_req); goto end; } cdev->os_desc_req->context = cdev; -- cgit v1.2.3 From 9383e084a88d04d442ea2dce128edff05f344e5c Mon Sep 17 00:00:00 2001 From: Vardan Mikayelyan Date: Thu, 5 Jan 2017 18:01:48 -0800 Subject: usb: dwc2: gadget: Fix DMA memory freeing Remove DMA memory free from EP disable flow by replacing dma_alloc_coherent with dmam_alloc_coherent. Tested-by: John Stultz Signed-off-by: Vardan Mikayelyan Signed-off-by: John Youn Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index c55db4aa54d6..2a9e51c176cc 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3749,8 +3749,8 @@ static int dwc2_hsotg_ep_enable(struct usb_ep *ep, __func__, epctrl, epctrl_reg); /* Allocate DMA descriptor chain for non-ctrl endpoints */ - if (using_desc_dma(hsotg)) { - hs_ep->desc_list = dma_alloc_coherent(hsotg->dev, + if (using_desc_dma(hsotg) && !hs_ep->desc_list) { + hs_ep->desc_list = dmam_alloc_coherent(hsotg->dev, MAX_DMA_DESC_NUM_GENERIC * sizeof(struct dwc2_dma_desc), &hs_ep->desc_list_dma, GFP_ATOMIC); @@ -3872,7 +3872,7 @@ error1: error2: if (ret && using_desc_dma(hsotg) && hs_ep->desc_list) { - dma_free_coherent(hsotg->dev, MAX_DMA_DESC_NUM_GENERIC * + dmam_free_coherent(hsotg->dev, MAX_DMA_DESC_NUM_GENERIC * sizeof(struct dwc2_dma_desc), hs_ep->desc_list, hs_ep->desc_list_dma); hs_ep->desc_list = NULL; @@ -3902,14 +3902,6 @@ static int dwc2_hsotg_ep_disable(struct usb_ep *ep) return -EINVAL; } - /* Remove DMA memory allocated for non-control Endpoints */ - if (using_desc_dma(hsotg)) { - dma_free_coherent(hsotg->dev, MAX_DMA_DESC_NUM_GENERIC * - sizeof(struct dwc2_dma_desc), - hs_ep->desc_list, hs_ep->desc_list_dma); - hs_ep->desc_list = NULL; - } - epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); spin_lock_irqsave(&hsotg->lock, flags); -- cgit v1.2.3 From 08f37148b6a915a6996c7dbef87769b9efee2dba Mon Sep 17 00:00:00 2001 From: Vincent Pelletier Date: Mon, 9 Jan 2017 13:46:00 +0000 Subject: usb: gadget: f_fs: Fix iterations on endpoints. When zero endpoints are declared for a function, there is no endpoint to disable, enable or free, so replace do...while loops with while loops. Change pre-decrement to post-decrement to iterate the same number of times when there are endpoints to process. Signed-off-by: Vincent Pelletier Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_fs.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 5e746adc8a2d..5490fc51638e 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -1806,7 +1806,7 @@ static void ffs_func_eps_disable(struct ffs_function *func) unsigned long flags; spin_lock_irqsave(&func->ffs->eps_lock, flags); - do { + while (count--) { /* pending requests get nuked */ if (likely(ep->ep)) usb_ep_disable(ep->ep); @@ -1817,7 +1817,7 @@ static void ffs_func_eps_disable(struct ffs_function *func) __ffs_epfile_read_buffer_free(epfile); ++epfile; } - } while (--count); + } spin_unlock_irqrestore(&func->ffs->eps_lock, flags); } @@ -1831,7 +1831,7 @@ static int ffs_func_eps_enable(struct ffs_function *func) int ret = 0; spin_lock_irqsave(&func->ffs->eps_lock, flags); - do { + while(count--) { struct usb_endpoint_descriptor *ds; int desc_idx; @@ -1867,7 +1867,7 @@ static int ffs_func_eps_enable(struct ffs_function *func) ++ep; ++epfile; - } while (--count); + } spin_unlock_irqrestore(&func->ffs->eps_lock, flags); return ret; @@ -3448,12 +3448,12 @@ static void ffs_func_unbind(struct usb_configuration *c, /* cleanup after autoconfig */ spin_lock_irqsave(&func->ffs->eps_lock, flags); - do { + while (count--) { if (ep->ep && ep->req) usb_ep_free_request(ep->ep, ep->req); ep->req = NULL; ++ep; - } while (--count); + } spin_unlock_irqrestore(&func->ffs->eps_lock, flags); kfree(func->eps); func->eps = NULL; -- cgit v1.2.3 From b2f92f0ff0a26a6d758ce85167a77d7d1268ca36 Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Mon, 9 Jan 2017 13:09:55 -0800 Subject: usb: dwc2: use u32 for DT binding parameters Commit 05ee799f2021 ("usb: dwc2: Move gadget settings into core_params") changes to type u16 for DT binding "g-rx-fifo-size" and "g-np-tx-fifo-size" but use type u32 for "g-tx-fifo-size". Finally the the first two parameters cannot be passed successfully with wrong data format. This is found the data transferring broken on 96boards Hikey. This patch is to change all parameters to u32 type, and verified on Hikey board the DT parameters can pass successfully. [johnyoun: minor rebase] Signed-off-by: Leo Yan Signed-off-by: John Youn Tested-by: John Stultz Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.h | 4 ++-- drivers/usb/dwc2/params.c | 10 +++++----- 2 files changed, 7 insertions(+), 7 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 9548d3e03453..302b8f5f7d27 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -513,8 +513,8 @@ struct dwc2_core_params { /* Gadget parameters */ bool g_dma; bool g_dma_desc; - u16 g_rx_fifo_size; - u16 g_np_tx_fifo_size; + u32 g_rx_fifo_size; + u32 g_np_tx_fifo_size; u32 g_tx_fifo_size[MAX_EPS_CHANNELS]; }; diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 11fe68a4627b..bcd1e19b4076 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -385,16 +385,16 @@ static void dwc2_set_param(struct dwc2_hsotg *hsotg, void *param, } /** - * dwc2_set_param_u16() - Set a u16 parameter + * dwc2_set_param_u32() - Set a u32 parameter * * See dwc2_set_param(). */ -static void dwc2_set_param_u16(struct dwc2_hsotg *hsotg, u16 *param, +static void dwc2_set_param_u32(struct dwc2_hsotg *hsotg, u32 *param, bool lookup, char *property, u16 legacy, u16 def, u16 min, u16 max) { dwc2_set_param(hsotg, param, lookup, property, - legacy, def, min, max, 2); + legacy, def, min, max, 4); } /** @@ -1178,12 +1178,12 @@ static void dwc2_set_parameters(struct dwc2_hsotg *hsotg, * auto-detect if the hardware does not support the * default. */ - dwc2_set_param_u16(hsotg, &p->g_rx_fifo_size, + dwc2_set_param_u32(hsotg, &p->g_rx_fifo_size, true, "g-rx-fifo-size", 2048, hw->rx_fifo_size, 16, hw->rx_fifo_size); - dwc2_set_param_u16(hsotg, &p->g_np_tx_fifo_size, + dwc2_set_param_u32(hsotg, &p->g_np_tx_fifo_size, true, "g-np-tx-fifo-size", 1024, hw->dev_nperio_tx_fifo_size, 16, hw->dev_nperio_tx_fifo_size); -- cgit v1.2.3 From 866932e2771f35d20ed2f1865bcf6af8dba765bb Mon Sep 17 00:00:00 2001 From: John Stultz Date: Mon, 9 Jan 2017 13:10:24 -0800 Subject: usb: dwc2: Avoid suspending if we're in gadget mode I've found when booting HiKey with the usb gadget cable attached if I then try to connect via adb, I get an infinite spew of: dwc2 f72c0000.usb: dwc2_hsotg_ep_sethalt(ep ffffffc0790ecb18 ep1out, 0) dwc2 f72c0000.usb: dwc2_hsotg_ep_sethalt(ep ffffffc0790eca18 ep1in, 0) It seems that the usb autosuspend is suspending the bus shortly after bootup when the gadget cable is attached. So when adbd then tries to use the device, it doesn't work and it then tries to restart it over and over via the ep_sethalt calls (via FUNCTIONFS_CLEAR_HALT ioctl). Chen Yu suggested this patch to avoid suspending if we're in device mode, and it avoids the problem. Cc: Wei Xu Cc: Guodong Xu Cc: Amit Pundir Cc: Rob Herring Cc: John Youn Cc: Douglas Anderson Cc: Chen Yu Cc: Kishon Vijay Abraham I Cc: Felipe Balbi Cc: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org Suggested-by: Chen Yu Signed-off-by: John Stultz Signed-off-by: John Youn Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/hcd.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 911c3b36ac06..8b264d4aaaeb 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -4367,6 +4367,9 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd) if (!HCD_HW_ACCESSIBLE(hcd)) goto unlock; + if (hsotg->op_state == OTG_STATE_B_PERIPHERAL) + goto unlock; + if (!hsotg->params.hibernation) goto skip_power_saving; -- cgit v1.2.3 From 8ae584d1951f241efd45499f8774fd7066f22823 Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Tue, 10 Jan 2017 16:05:28 -0700 Subject: usb: dwc3: exynos fix axius clock error path to do cleanup Axius clock error path returns without disabling clock and suspend clock. Fix it to disable them before returning error. Reviewed-by: Javier Martinez Canillas Signed-off-by: Shuah Khan Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-exynos.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index e27899bb5706..e956306d9b0f 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -138,7 +138,8 @@ static int dwc3_exynos_probe(struct platform_device *pdev) exynos->axius_clk = devm_clk_get(dev, "usbdrd30_axius_clk"); if (IS_ERR(exynos->axius_clk)) { dev_err(dev, "no AXI UpScaler clk specified\n"); - return -ENODEV; + ret = -ENODEV; + goto axius_clk_err; } clk_prepare_enable(exynos->axius_clk); } else { @@ -196,6 +197,7 @@ err3: regulator_disable(exynos->vdd33); err2: clk_disable_unprepare(exynos->axius_clk); +axius_clk_err: clk_disable_unprepare(exynos->susp_clk); clk_disable_unprepare(exynos->clk); return ret; -- cgit v1.2.3 From 32856eea7bf75dfb99b955ada6e147f553a11366 Mon Sep 17 00:00:00 2001 From: Alexandre Belloni Date: Wed, 11 Jan 2017 13:11:08 +0100 Subject: usb: gadget: udc: atmel: remove memory leak Commit bbe097f092b0 ("usb: gadget: udc: atmel: fix endpoint name") introduced a memory leak when unbinding the driver. The endpoint names would not be freed. Solve that by including the name as a string in struct usba_ep so it is freed when the endpoint is. Signed-off-by: Alexandre Belloni Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/atmel_usba_udc.c | 3 ++- drivers/usb/gadget/udc/atmel_usba_udc.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index f3212db9bc37..12c7687216e6 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -1978,7 +1978,8 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, dev_err(&pdev->dev, "of_probe: name error(%d)\n", ret); goto err; } - ep->ep.name = kasprintf(GFP_KERNEL, "ep%d", ep->index); + sprintf(ep->name, "ep%d", ep->index); + ep->ep.name = ep->name; ep->ep_regs = udc->regs + USBA_EPT_BASE(i); ep->dma_regs = udc->regs + USBA_DMA_BASE(i); diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.h b/drivers/usb/gadget/udc/atmel_usba_udc.h index 3e1c9d589dfa..b03b2ebfc53a 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.h +++ b/drivers/usb/gadget/udc/atmel_usba_udc.h @@ -280,6 +280,7 @@ struct usba_ep { void __iomem *ep_regs; void __iomem *dma_regs; void __iomem *fifo; + char name[8]; struct usb_ep ep; struct usba_udc *udc; -- cgit v1.2.3 From ca02954ada711b08e5b0d84590a631fd63ed39f9 Mon Sep 17 00:00:00 2001 From: Amelie Delaunay Date: Thu, 12 Jan 2017 16:09:44 +0100 Subject: usb: dwc2: gadget: Fix GUSBCFG.USBTRDTIM value USBTrdTim must be programmed to 0x5 when phy has a UTMI+ 16-bit wide interface or 0x9 when it has a 8-bit wide interface. GUSBCFG reset value (Value After Reset: 0x1400) sets USBTrdTim to 0x5. In case of 8-bit UTMI+, without clearing GUSBCFG.USBTRDTIM mask, USBTrdTim results in 0xD (0x5 | 0x9). That's why we need to clear GUSBCFG.USBTRDTIM mask before setting USBTrdTim value, to ensure USBTrdTim is correctly set in case of 8-bit UTMI+. Signed-off-by: Amelie Delaunay Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 2a9e51c176cc..77c5fcf3a5bf 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3169,7 +3169,7 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg, /* keep other bits untouched (so e.g. forced modes are not lost) */ usbcfg = dwc2_readl(hsotg->regs + GUSBCFG); usbcfg &= ~(GUSBCFG_TOUTCAL_MASK | GUSBCFG_PHYIF16 | GUSBCFG_SRPCAP | - GUSBCFG_HNPCAP); + GUSBCFG_HNPCAP | GUSBCFG_USBTRDTIM_MASK); if (hsotg->params.phy_type == DWC2_PHY_TYPE_PARAM_FS && (hsotg->params.speed == DWC2_SPEED_PARAM_FULL || @@ -4123,7 +4123,7 @@ static void dwc2_hsotg_init(struct dwc2_hsotg *hsotg) /* keep other bits untouched (so e.g. forced modes are not lost) */ usbcfg = dwc2_readl(hsotg->regs + GUSBCFG); usbcfg &= ~(GUSBCFG_TOUTCAL_MASK | GUSBCFG_PHYIF16 | GUSBCFG_SRPCAP | - GUSBCFG_HNPCAP); + GUSBCFG_HNPCAP | GUSBCFG_USBTRDTIM_MASK); /* set the PLL on, remove the HNP/SRP and set the PHY */ trdtim = (hsotg->phyif == GUSBCFG_PHYIF8) ? 9 : 5; -- cgit v1.2.3 From efe357f4633a12ca89bdf9bbdd8aaf5a7a0cc3c0 Mon Sep 17 00:00:00 2001 From: Nicholas Mc Guire Date: Thu, 12 Jan 2017 17:33:26 +0100 Subject: usb: dwc2: host: fix Wmaybe-uninitialized warning Uninitialized char* causes a sparse build-warning, fix it up by initializing it to NULL. Acked-by: John Youn Signed-off-by: Nicholas Mc Guire Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/hcd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 8b264d4aaaeb..46d0ad5105e4 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -4492,8 +4492,8 @@ static void dwc2_dump_urb_info(struct usb_hcd *hcd, struct urb *urb, { #ifdef VERBOSE_DEBUG struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); - char *pipetype; - char *speed; + char *pipetype = NULL; + char *speed = NULL; dev_vdbg(hsotg->dev, "%s, urb %p\n", fn_name, urb); dev_vdbg(hsotg->dev, " Device address: %d\n", -- cgit v1.2.3 From 488dc164914ff5ce5e913abd32048d28fc0d06b8 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 20 Jan 2017 15:38:24 +0200 Subject: xhci: remove WARN_ON if dma mask is not set for platform devices The warn on is a bit too much, we will anyway set the dma mask if not set previously. The main reason for this fix is that 4.10-rc1 has a dwc3 change that pass a parent sysdev dev pointer instead of setting the dma mask of its xhci platform device. xhci platform driver can then get more attributes from the sysdev than just the dma mask. The usb core and xhci changes are not yet in 4.10, and a fix like this was preferred instead of taking those big changes this late in the rc-cycle. Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-plat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index ddfab301e366..e5834dd9bcde 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -165,7 +165,7 @@ static int xhci_plat_probe(struct platform_device *pdev) return -ENODEV; /* Try to set 64-bit DMA first */ - if (WARN_ON(!pdev->dev.dma_mask)) + if (!pdev->dev.dma_mask) /* Platform did not initialize dma_mask */ ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); -- cgit v1.2.3