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-rw-r--r--drivers/usb/gadget/Kconfig2
-rw-r--r--drivers/usb/gadget/at91_udc.c176
-rw-r--r--drivers/usb/gadget/at91_udc.h1
-rw-r--r--drivers/usb/gadget/dummy_hcd.c6
-rw-r--r--drivers/usb/gadget/epautoconf.c16
-rw-r--r--drivers/usb/gadget/ether.c53
-rw-r--r--drivers/usb/gadget/file_storage.c2
-rw-r--r--drivers/usb/gadget/rndis.c2
-rw-r--r--drivers/usb/gadget/rndis.h2
-rw-r--r--drivers/usb/gadget/serial.c2
-rw-r--r--drivers/usb/gadget/zero.c2
11 files changed, 166 insertions, 98 deletions
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 363b2ad74ae6..1a32d96774b4 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -207,7 +207,7 @@ config USB_AT91
config USB_GADGET_DUMMY_HCD
boolean "Dummy HCD (DEVELOPMENT)"
- depends on USB && EXPERIMENTAL
+ depends on (USB=y || (USB=m && USB_GADGET=m)) && EXPERIMENTAL
select USB_GADGET_DUALSPEED
help
This host controller driver emulates USB, looping all data transfer
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index 1c459ff037ce..cfebca05ead5 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -57,19 +57,23 @@
/*
* This controller is simple and PIO-only. It's used in many AT91-series
- * ARMv4T controllers, including the at91rm9200 (arm920T, with MMU),
- * at91sam9261 (arm926ejs, with MMU), and several no-mmu versions.
+ * full speed USB controllers, including the at91rm9200 (arm920T, with MMU),
+ * at91sam926x (arm926ejs, with MMU), and several no-mmu versions.
*
* This driver expects the board has been wired with two GPIOs suppporting
* a VBUS sensing IRQ, and a D+ pullup. (They may be omitted, but the
- * testing hasn't covered such cases.) The pullup is most important; it
+ * testing hasn't covered such cases.)
+ *
+ * The pullup is most important (so it's integrated on sam926x parts). It
* provides software control over whether the host enumerates the device.
+ *
* The VBUS sensing helps during enumeration, and allows both USB clocks
* (and the transceiver) to stay gated off until they're necessary, saving
- * power. During USB suspend, the 48 MHz clock is gated off.
+ * power. During USB suspend, the 48 MHz clock is gated off in hardware;
+ * it may also be gated off by software during some Linux sleep states.
*/
-#define DRIVER_VERSION "8 March 2005"
+#define DRIVER_VERSION "3 May 2006"
static const char driver_name [] = "at91_udc";
static const char ep0name[] = "ep0";
@@ -316,9 +320,15 @@ static void done(struct at91_ep *ep, struct at91_request *req, int status)
*
* There are also state bits like FORCESTALL, EPEDS, DIR, and EPTYPE
* that shouldn't normally be changed.
+ *
+ * NOTE at91sam9260 docs mention synch between UDPCK and MCK clock domains,
+ * implying a need to wait for one write to complete (test relevant bits)
+ * before starting the next write. This shouldn't be an issue given how
+ * infrequently we write, except maybe for write-then-read idioms.
*/
#define SET_FX (AT91_UDP_TXPKTRDY)
-#define CLR_FX (RX_DATA_READY | AT91_UDP_RXSETUP | AT91_UDP_STALLSENT | AT91_UDP_TXCOMP)
+#define CLR_FX (RX_DATA_READY | AT91_UDP_RXSETUP \
+ | AT91_UDP_STALLSENT | AT91_UDP_TXCOMP)
/* pull OUT packet data from the endpoint's fifo */
static int read_fifo (struct at91_ep *ep, struct at91_request *req)
@@ -472,7 +482,8 @@ static void nuke(struct at91_ep *ep, int status)
/*-------------------------------------------------------------------------*/
-static int at91_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
+static int at91_ep_enable(struct usb_ep *_ep,
+ const struct usb_endpoint_descriptor *desc)
{
struct at91_ep *ep = container_of(_ep, struct at91_ep, ep);
struct at91_udc *dev = ep->udc;
@@ -582,11 +593,12 @@ static int at91_ep_disable (struct usb_ep * _ep)
* interesting for request or buffer allocation.
*/
-static struct usb_request *at91_ep_alloc_request (struct usb_ep *_ep, unsigned int gfp_flags)
+static struct usb_request *
+at91_ep_alloc_request(struct usb_ep *_ep, unsigned int gfp_flags)
{
struct at91_request *req;
- req = kcalloc(1, sizeof (struct at91_request), SLAB_KERNEL);
+ req = kcalloc(1, sizeof (struct at91_request), gfp_flags);
if (!req)
return NULL;
@@ -862,6 +874,7 @@ static void stop_activity(struct at91_udc *udc)
if (udc->gadget.speed == USB_SPEED_UNKNOWN)
driver = NULL;
udc->gadget.speed = USB_SPEED_UNKNOWN;
+ udc->suspended = 0;
for (i = 0; i < NUM_ENDPOINTS; i++) {
struct at91_ep *ep = &udc->ep[i];
@@ -889,8 +902,8 @@ static void clk_off(struct at91_udc *udc)
return;
udc->clocked = 0;
udc->gadget.speed = USB_SPEED_UNKNOWN;
- clk_disable(udc->iclk);
clk_disable(udc->fclk);
+ clk_disable(udc->iclk);
}
/*
@@ -911,9 +924,6 @@ static void pullup(struct at91_udc *udc, int is_on)
at91_udp_write(AT91_UDP_TXVC, AT91_UDP_TXVC_TXVDIS);
at91_set_gpio_value(udc->board.pullup_pin, 0);
clk_off(udc);
-
- // REVISIT: with transceiver disabled, will D- float
- // so that a host would falsely detect a device?
}
}
@@ -1290,7 +1300,8 @@ static void handle_ep0(struct at91_udc *udc)
if (udc->wait_for_addr_ack) {
u32 tmp;
- at91_udp_write(AT91_UDP_FADDR, AT91_UDP_FEN | udc->addr);
+ at91_udp_write(AT91_UDP_FADDR,
+ AT91_UDP_FEN | udc->addr);
tmp = at91_udp_read(AT91_UDP_GLB_STAT);
tmp &= ~AT91_UDP_FADDEN;
if (udc->addr)
@@ -1361,9 +1372,10 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc, struct pt_regs *r)
u32 rescans = 5;
while (rescans--) {
- u32 status = at91_udp_read(AT91_UDP_ISR);
+ u32 status;
- status &= at91_udp_read(AT91_UDP_IMR);
+ status = at91_udp_read(AT91_UDP_ISR)
+ & at91_udp_read(AT91_UDP_IMR);
if (!status)
break;
@@ -1379,18 +1391,17 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc, struct pt_regs *r)
stop_activity(udc);
/* enable ep0 */
- at91_udp_write(AT91_UDP_CSR(0), AT91_UDP_EPEDS | AT91_UDP_EPTYPE_CTRL);
+ at91_udp_write(AT91_UDP_CSR(0),
+ AT91_UDP_EPEDS | AT91_UDP_EPTYPE_CTRL);
udc->gadget.speed = USB_SPEED_FULL;
udc->suspended = 0;
at91_udp_write(AT91_UDP_IER, AT91_UDP_EP(0));
/*
* NOTE: this driver keeps clocks off unless the
- * USB host is present. That saves power, and also
- * eliminates IRQs (reset, resume, suspend) that can
- * otherwise flood from the controller. If your
- * board doesn't support VBUS detection, suspend and
- * resume irq logic may need more attention...
+ * USB host is present. That saves power, but for
+ * boards that don't support VBUS detection, both
+ * clocks need to be active most of the time.
*/
/* host initiated suspend (3+ms bus idle) */
@@ -1452,13 +1463,19 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc, struct pt_regs *r)
/*-------------------------------------------------------------------------*/
+static void nop_release(struct device *dev)
+{
+ /* nothing to free */
+}
+
static struct at91_udc controller = {
.gadget = {
- .ops = &at91_udc_ops,
- .ep0 = &controller.ep[0].ep,
- .name = driver_name,
- .dev = {
- .bus_id = "gadget"
+ .ops = &at91_udc_ops,
+ .ep0 = &controller.ep[0].ep,
+ .name = driver_name,
+ .dev = {
+ .bus_id = "gadget",
+ .release = nop_release,
}
},
.ep[0] = {
@@ -1468,7 +1485,8 @@ static struct at91_udc controller = {
},
.udc = &controller,
.maxpacket = 8,
- .creg = (void __iomem *)(AT91_VA_BASE_UDP + AT91_UDP_CSR(0)),
+ .creg = (void __iomem *)(AT91_VA_BASE_UDP
+ + AT91_UDP_CSR(0)),
.int_mask = 1 << 0,
},
.ep[1] = {
@@ -1479,7 +1497,8 @@ static struct at91_udc controller = {
.udc = &controller,
.is_pingpong = 1,
.maxpacket = 64,
- .creg = (void __iomem *)(AT91_VA_BASE_UDP + AT91_UDP_CSR(1)),
+ .creg = (void __iomem *)(AT91_VA_BASE_UDP
+ + AT91_UDP_CSR(1)),
.int_mask = 1 << 1,
},
.ep[2] = {
@@ -1490,7 +1509,8 @@ static struct at91_udc controller = {
.udc = &controller,
.is_pingpong = 1,
.maxpacket = 64,
- .creg = (void __iomem *)(AT91_VA_BASE_UDP + AT91_UDP_CSR(2)),
+ .creg = (void __iomem *)(AT91_VA_BASE_UDP
+ + AT91_UDP_CSR(2)),
.int_mask = 1 << 2,
},
.ep[3] = {
@@ -1501,7 +1521,8 @@ static struct at91_udc controller = {
},
.udc = &controller,
.maxpacket = 8,
- .creg = (void __iomem *)(AT91_VA_BASE_UDP + AT91_UDP_CSR(3)),
+ .creg = (void __iomem *)(AT91_VA_BASE_UDP
+ + AT91_UDP_CSR(3)),
.int_mask = 1 << 3,
},
.ep[4] = {
@@ -1512,7 +1533,8 @@ static struct at91_udc controller = {
.udc = &controller,
.is_pingpong = 1,
.maxpacket = 256,
- .creg = (void __iomem *)(AT91_VA_BASE_UDP + AT91_UDP_CSR(4)),
+ .creg = (void __iomem *)(AT91_VA_BASE_UDP
+ + AT91_UDP_CSR(4)),
.int_mask = 1 << 4,
},
.ep[5] = {
@@ -1523,10 +1545,11 @@ static struct at91_udc controller = {
.udc = &controller,
.is_pingpong = 1,
.maxpacket = 256,
- .creg = (void __iomem *)(AT91_VA_BASE_UDP + AT91_UDP_CSR(5)),
+ .creg = (void __iomem *)(AT91_VA_BASE_UDP
+ + AT91_UDP_CSR(5)),
.int_mask = 1 << 5,
},
- /* ep6 and ep7 are also reserved */
+ /* ep6 and ep7 are also reserved (custom silicon might use them) */
};
static irqreturn_t at91_vbus_irq(int irq, void *_udc, struct pt_regs *r)
@@ -1593,6 +1616,7 @@ int usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
local_irq_disable();
udc->enabled = 0;
+ at91_udp_write(AT91_UDP_IDR, ~0);
pullup(udc, 0);
local_irq_enable();
@@ -1624,6 +1648,16 @@ static int __devinit at91udc_probe(struct platform_device *pdev)
return -ENODEV;
}
+ if (pdev->num_resources != 2) {
+ DBG("invalid num_resources");
+ return -ENODEV;
+ }
+ if ((pdev->resource[0].flags != IORESOURCE_MEM)
+ || (pdev->resource[1].flags != IORESOURCE_IRQ)) {
+ DBG("invalid resource type");
+ return -ENODEV;
+ }
+
if (!request_mem_region(AT91_BASE_UDP, SZ_16K, driver_name)) {
DBG("someone's using UDC memory\n");
return -EBUSY;
@@ -1649,19 +1683,26 @@ static int __devinit at91udc_probe(struct platform_device *pdev)
if (retval < 0)
goto fail0;
- /* disable everything until there's a gadget driver and vbus */
- pullup(udc, 0);
+ /* don't do anything until we have both gadget driver and VBUS */
+ clk_enable(udc->iclk);
+ at91_udp_write(AT91_UDP_TXVC, AT91_UDP_TXVC_TXVDIS);
+ at91_udp_write(AT91_UDP_IDR, 0xffffffff);
+ clk_disable(udc->iclk);
/* request UDC and maybe VBUS irqs */
- if (request_irq(AT91_ID_UDP, at91_udc_irq, IRQF_DISABLED, driver_name, udc)) {
- DBG("request irq %d failed\n", AT91_ID_UDP);
+ udc->udp_irq = platform_get_irq(pdev, 0);
+ if (request_irq(udc->udp_irq, at91_udc_irq,
+ IRQF_DISABLED, driver_name, udc)) {
+ DBG("request irq %d failed\n", udc->udp_irq);
retval = -EBUSY;
goto fail1;
}
if (udc->board.vbus_pin > 0) {
- if (request_irq(udc->board.vbus_pin, at91_vbus_irq, IRQF_DISABLED, driver_name, udc)) {
- DBG("request vbus irq %d failed\n", udc->board.vbus_pin);
- free_irq(AT91_ID_UDP, udc);
+ if (request_irq(udc->board.vbus_pin, at91_vbus_irq,
+ IRQF_DISABLED, driver_name, udc)) {
+ DBG("request vbus irq %d failed\n",
+ udc->board.vbus_pin);
+ free_irq(udc->udp_irq, udc);
retval = -EBUSY;
goto fail1;
}
@@ -1670,6 +1711,7 @@ static int __devinit at91udc_probe(struct platform_device *pdev)
udc->vbus = 1;
}
dev_set_drvdata(dev, udc);
+ device_init_wakeup(dev, 1);
create_debug_file(udc);
INFO("%s version %s\n", driver_name, DRIVER_VERSION);
@@ -1678,14 +1720,14 @@ static int __devinit at91udc_probe(struct platform_device *pdev)
fail1:
device_unregister(&udc->gadget.dev);
fail0:
- release_mem_region(AT91_VA_BASE_UDP, SZ_16K);
+ release_mem_region(AT91_BASE_UDP, SZ_16K);
DBG("%s probe failed, %d\n", driver_name, retval);
return retval;
}
-static int __devexit at91udc_remove(struct platform_device *dev)
+static int __devexit at91udc_remove(struct platform_device *pdev)
{
- struct at91_udc *udc = platform_get_drvdata(dev);
+ struct at91_udc *udc = platform_get_drvdata(pdev);
DBG("remove\n");
@@ -1694,10 +1736,11 @@ static int __devexit at91udc_remove(struct platform_device *dev)
if (udc->driver != 0)
usb_gadget_unregister_driver(udc->driver);
+ device_init_wakeup(&pdev->dev, 0);
remove_debug_file(udc);
if (udc->board.vbus_pin > 0)
free_irq(udc->board.vbus_pin, udc);
- free_irq(AT91_ID_UDP, udc);
+ free_irq(udc->udp_irq, udc);
device_unregister(&udc->gadget.dev);
release_mem_region(AT91_BASE_UDP, SZ_16K);
@@ -1708,31 +1751,36 @@ static int __devexit at91udc_remove(struct platform_device *dev)
}
#ifdef CONFIG_PM
-static int at91udc_suspend(struct platform_device *dev, pm_message_t mesg)
+static int at91udc_suspend(struct platform_device *pdev, pm_message_t mesg)
{
- struct at91_udc *udc = platform_get_drvdata(dev);
+ struct at91_udc *udc = platform_get_drvdata(pdev);
+ int wake = udc->driver && device_may_wakeup(&pdev->dev);
- /*
- * The "safe" suspend transitions are opportunistic ... e.g. when
- * the USB link is suspended (48MHz clock autogated off), or when
- * it's disconnected (programmatically gated off, elsewhere).
- * Then we can suspend, and the chip can enter slow clock mode.
- *
- * The problem case is some component (user mode?) suspending this
- * device while it's active, with the 48 MHz clock in use. There
- * are two basic approaches: (a) veto suspend levels involving slow
- * clock mode, (b) disconnect, so 48 MHz will no longer be in use
- * and we can enter slow clock mode. This uses (b) for now, since
- * it's simplest until AT91 PM exists and supports the other option.
+ /* Unless we can act normally to the host (letting it wake us up
+ * whenever it has work for us) force disconnect. Wakeup requires
+ * PLLB for USB events (signaling for reset, wakeup, or incoming
+ * tokens) and VBUS irqs (on systems which support them).
*/
- if (udc->vbus && !udc->suspended)
+ if ((!udc->suspended && udc->addr)
+ || !wake
+ || at91_suspend_entering_slow_clock()) {
pullup(udc, 0);
+ disable_irq_wake(udc->udp_irq);
+ } else
+ enable_irq_wake(udc->udp_irq);
+
+ if (udc->board.vbus_pin > 0) {
+ if (wake)
+ enable_irq_wake(udc->board.vbus_pin);
+ else
+ disable_irq_wake(udc->board.vbus_pin);
+ }
return 0;
}
-static int at91udc_resume(struct platform_device *dev)
+static int at91udc_resume(struct platform_device *pdev)
{
- struct at91_udc *udc = platform_get_drvdata(dev);
+ struct at91_udc *udc = platform_get_drvdata(pdev);
/* maybe reconnect to host; if so, clocks on */
pullup(udc, 1);
@@ -1748,7 +1796,7 @@ static struct platform_driver at91_udc = {
.remove = __devexit_p(at91udc_remove),
.shutdown = at91udc_shutdown,
.suspend = at91udc_suspend,
- .resume = at91udc_resume,
+ .resume = at91udc_resume,
.driver = {
.name = (char *) driver_name,
.owner = THIS_MODULE,
@@ -1767,6 +1815,6 @@ static void __devexit udc_exit_module(void)
}
module_exit(udc_exit_module);
-MODULE_DESCRIPTION("AT91RM9200 udc driver");
+MODULE_DESCRIPTION("AT91 udc driver");
MODULE_AUTHOR("Thomas Rathbone, David Brownell");
MODULE_LICENSE("GPL");
diff --git a/drivers/usb/gadget/at91_udc.h b/drivers/usb/gadget/at91_udc.h
index 5a4799cedd19..882af42e86cc 100644
--- a/drivers/usb/gadget/at91_udc.h
+++ b/drivers/usb/gadget/at91_udc.h
@@ -141,6 +141,7 @@ struct at91_udc {
struct clk *iclk, *fclk;
struct platform_device *pdev;
struct proc_dir_entry *pde;
+ int udp_irq;
};
static inline struct at91_udc *to_udc(struct usb_gadget *g)
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index 4be47195bd38..7d1c22c34957 100644
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -609,7 +609,8 @@ static int dummy_dequeue (struct usb_ep *_ep, struct usb_request *_req)
if (!dum->driver)
return -ESHUTDOWN;
- spin_lock_irqsave (&dum->lock, flags);
+ local_irq_save (flags);
+ spin_lock (&dum->lock);
list_for_each_entry (req, &ep->queue, queue) {
if (&req->req == _req) {
list_del_init (&req->queue);
@@ -618,7 +619,7 @@ static int dummy_dequeue (struct usb_ep *_ep, struct usb_request *_req)
break;
}
}
- spin_unlock_irqrestore (&dum->lock, flags);
+ spin_unlock (&dum->lock);
if (retval == 0) {
dev_dbg (udc_dev(dum),
@@ -626,6 +627,7 @@ static int dummy_dequeue (struct usb_ep *_ep, struct usb_request *_req)
req, _ep->name, _req->length, _req->buf);
_req->complete (_ep, _req);
}
+ local_irq_restore (flags);
return retval;
}
diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c
index f7c6d758e1b0..53d584589c26 100644
--- a/drivers/usb/gadget/epautoconf.c
+++ b/drivers/usb/gadget/epautoconf.c
@@ -34,12 +34,12 @@
/* we must assign addresses for configurable endpoints (like net2280) */
-static __initdata unsigned epnum;
+static __devinitdata unsigned epnum;
// #define MANY_ENDPOINTS
#ifdef MANY_ENDPOINTS
/* more than 15 configurable endpoints */
-static __initdata unsigned in_epnum;
+static __devinitdata unsigned in_epnum;
#endif
@@ -59,7 +59,7 @@ static __initdata unsigned in_epnum;
* NOTE: each endpoint is unidirectional, as specified by its USB
* descriptor; and isn't specific to a configuration or altsetting.
*/
-static int __init
+static int __devinit
ep_matches (
struct usb_gadget *gadget,
struct usb_ep *ep,
@@ -73,7 +73,7 @@ ep_matches (
/* endpoint already claimed? */
if (0 != ep->driver_data)
return 0;
-
+
/* only support ep0 for portable CONTROL traffic */
type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
if (USB_ENDPOINT_XFER_CONTROL == type)
@@ -186,7 +186,7 @@ ep_matches (
return 1;
}
-static struct usb_ep * __init
+static struct usb_ep * __devinit
find_ep (struct usb_gadget *gadget, const char *name)
{
struct usb_ep *ep;
@@ -228,7 +228,7 @@ find_ep (struct usb_gadget *gadget, const char *name)
*
* On failure, this returns a null endpoint descriptor.
*/
-struct usb_ep * __init usb_ep_autoconfig (
+struct usb_ep * __devinit usb_ep_autoconfig (
struct usb_gadget *gadget,
struct usb_endpoint_descriptor *desc
)
@@ -276,7 +276,7 @@ struct usb_ep * __init usb_ep_autoconfig (
return ep;
}
- /* Second, look at endpoints until an unclaimed one looks usable */
+ /* Second, look at endpoints until an unclaimed one looks usable */
list_for_each_entry (ep, &gadget->ep_list, ep_list) {
if (ep_matches (gadget, ep, desc))
return ep;
@@ -295,7 +295,7 @@ struct usb_ep * __init usb_ep_autoconfig (
* state such as ep->driver_data and the record of assigned endpoints
* used by usb_ep_autoconfig().
*/
-void __init usb_ep_autoconfig_reset (struct usb_gadget *gadget)
+void __devinit usb_ep_autoconfig_reset (struct usb_gadget *gadget)
{
struct usb_ep *ep;
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index 8320fcef0425..30299c620d97 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -117,6 +117,8 @@ struct eth_dev {
struct usb_ep *in_ep, *out_ep, *status_ep;
const struct usb_endpoint_descriptor
*in, *out, *status;
+
+ spinlock_t req_lock;
struct list_head tx_reqs, rx_reqs;
struct net_device *net;
@@ -1066,21 +1068,31 @@ static void eth_reset_config (struct eth_dev *dev)
*/
if (dev->in) {
usb_ep_disable (dev->in_ep);
+ spin_lock(&dev->req_lock);
while (likely (!list_empty (&dev->tx_reqs))) {
req = container_of (dev->tx_reqs.next,
struct usb_request, list);
list_del (&req->list);
+
+ spin_unlock(&dev->req_lock);
usb_ep_free_request (dev->in_ep, req);
+ spin_lock(&dev->req_lock);
}
+ spin_unlock(&dev->req_lock);
}
if (dev->out) {
usb_ep_disable (dev->out_ep);
+ spin_lock(&dev->req_lock);
while (likely (!list_empty (&dev->rx_reqs))) {
req = container_of (dev->rx_reqs.next,
struct usb_request, list);
list_del (&req->list);
+
+ spin_unlock(&dev->req_lock);
usb_ep_free_request (dev->out_ep, req);
+ spin_lock(&dev->req_lock);
}
+ spin_unlock(&dev->req_lock);
}
if (dev->status) {
@@ -1659,9 +1671,9 @@ enomem:
if (retval) {
DEBUG (dev, "rx submit --> %d\n", retval);
dev_kfree_skb_any (skb);
- spin_lock (&dev->lock);
+ spin_lock(&dev->req_lock);
list_add (&req->list, &dev->rx_reqs);
- spin_unlock (&dev->lock);
+ spin_unlock(&dev->req_lock);
}
return retval;
}
@@ -1730,8 +1742,9 @@ quiesce:
dev_kfree_skb_any (skb);
if (!netif_running (dev->net)) {
clean:
- /* nobody reading rx_reqs, so no dev->lock */
+ spin_lock(&dev->req_lock);
list_add (&req->list, &dev->rx_reqs);
+ spin_unlock(&dev->req_lock);
req = NULL;
}
if (req)
@@ -1782,15 +1795,18 @@ static int alloc_requests (struct eth_dev *dev, unsigned n, gfp_t gfp_flags)
{
int status;
+ spin_lock(&dev->req_lock);
status = prealloc (&dev->tx_reqs, dev->in_ep, n, gfp_flags);
if (status < 0)
goto fail;
status = prealloc (&dev->rx_reqs, dev->out_ep, n, gfp_flags);
if (status < 0)
goto fail;
- return 0;
+ goto done;
fail:
DEBUG (dev, "can't alloc requests\n");
+done:
+ spin_unlock(&dev->req_lock);
return status;
}
@@ -1800,21 +1816,21 @@ static void rx_fill (struct eth_dev *dev, gfp_t gfp_flags)
unsigned long flags;
/* fill unused rxq slots with some skb */
- spin_lock_irqsave (&dev->lock, flags);
+ spin_lock_irqsave(&dev->req_lock, flags);
while (!list_empty (&dev->rx_reqs)) {
req = container_of (dev->rx_reqs.next,
struct usb_request, list);
list_del_init (&req->list);
- spin_unlock_irqrestore (&dev->lock, flags);
+ spin_unlock_irqrestore(&dev->req_lock, flags);
if (rx_submit (dev, req, gfp_flags) < 0) {
defer_kevent (dev, WORK_RX_MEMORY);
return;
}
- spin_lock_irqsave (&dev->lock, flags);
+ spin_lock_irqsave(&dev->req_lock, flags);
}
- spin_unlock_irqrestore (&dev->lock, flags);
+ spin_unlock_irqrestore(&dev->req_lock, flags);
}
static void eth_work (void *_dev)
@@ -1848,9 +1864,9 @@ static void tx_complete (struct usb_ep *ep, struct usb_request *req)
}
dev->stats.tx_packets++;
- spin_lock (&dev->lock);
+ spin_lock(&dev->req_lock);
list_add (&req->list, &dev->tx_reqs);
- spin_unlock (&dev->lock);
+ spin_unlock(&dev->req_lock);
dev_kfree_skb_any (skb);
atomic_dec (&dev->tx_qlen);
@@ -1896,12 +1912,12 @@ static int eth_start_xmit (struct sk_buff *skb, struct net_device *net)
/* ignores USB_CDC_PACKET_TYPE_DIRECTED */
}
- spin_lock_irqsave (&dev->lock, flags);
+ spin_lock_irqsave(&dev->req_lock, flags);
req = container_of (dev->tx_reqs.next, struct usb_request, list);
list_del (&req->list);
if (list_empty (&dev->tx_reqs))
netif_stop_queue (net);
- spin_unlock_irqrestore (&dev->lock, flags);
+ spin_unlock_irqrestore(&dev->req_lock, flags);
/* no buffer copies needed, unless the network stack did it
* or the hardware can't use skb buffers.
@@ -1955,11 +1971,11 @@ static int eth_start_xmit (struct sk_buff *skb, struct net_device *net)
drop:
dev->stats.tx_dropped++;
dev_kfree_skb_any (skb);
- spin_lock_irqsave (&dev->lock, flags);
+ spin_lock_irqsave(&dev->req_lock, flags);
if (list_empty (&dev->tx_reqs))
netif_start_queue (net);
list_add (&req->list, &dev->tx_reqs);
- spin_unlock_irqrestore (&dev->lock, flags);
+ spin_unlock_irqrestore(&dev->req_lock, flags);
}
return 0;
}
@@ -2131,7 +2147,7 @@ eth_req_free (struct usb_ep *ep, struct usb_request *req)
}
-static void __exit
+static void /* __init_or_exit */
eth_unbind (struct usb_gadget *gadget)
{
struct eth_dev *dev = get_gadget_data (gadget);
@@ -2158,7 +2174,7 @@ eth_unbind (struct usb_gadget *gadget)
set_gadget_data (gadget, NULL);
}
-static u8 __init nibble (unsigned char c)
+static u8 __devinit nibble (unsigned char c)
{
if (likely (isdigit (c)))
return c - '0';
@@ -2168,7 +2184,7 @@ static u8 __init nibble (unsigned char c)
return 0;
}
-static int __init get_ether_addr(const char *str, u8 *dev_addr)
+static int __devinit get_ether_addr(const char *str, u8 *dev_addr)
{
if (str) {
unsigned i;
@@ -2189,7 +2205,7 @@ static int __init get_ether_addr(const char *str, u8 *dev_addr)
return 1;
}
-static int __init
+static int __devinit
eth_bind (struct usb_gadget *gadget)
{
struct eth_dev *dev;
@@ -2378,6 +2394,7 @@ autoconf_fail:
return status;
dev = netdev_priv(net);
spin_lock_init (&dev->lock);
+ spin_lock_init (&dev->req_lock);
INIT_WORK (&dev->work, eth_work, dev);
INIT_LIST_HEAD (&dev->tx_reqs);
INIT_LIST_HEAD (&dev->rx_reqs);
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index b1a9cf06f3e6..8d7f1e84cd7b 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -3691,7 +3691,7 @@ static void lun_release(struct device *dev)
kref_put(&fsg->ref, fsg_release);
}
-static void __exit fsg_unbind(struct usb_gadget *gadget)
+static void /* __init_or_exit */ fsg_unbind(struct usb_gadget *gadget)
{
struct fsg_dev *fsg = get_gadget_data(gadget);
int i;
diff --git a/drivers/usb/gadget/rndis.c b/drivers/usb/gadget/rndis.c
index 354670d12308..408c3380d602 100644
--- a/drivers/usb/gadget/rndis.c
+++ b/drivers/usb/gadget/rndis.c
@@ -1398,7 +1398,7 @@ static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS];
#endif /* CONFIG_USB_GADGET_DEBUG_FILES */
-int __init rndis_init (void)
+int __devinit rndis_init (void)
{
u8 i;
diff --git a/drivers/usb/gadget/rndis.h b/drivers/usb/gadget/rndis.h
index 2956608be751..4c3c7259f019 100644
--- a/drivers/usb/gadget/rndis.h
+++ b/drivers/usb/gadget/rndis.h
@@ -264,7 +264,7 @@ int rndis_signal_disconnect (int configNr);
int rndis_state (int configNr);
extern void rndis_set_host_mac (int configNr, const u8 *addr);
-int __init rndis_init (void);
+int __devinit rndis_init (void);
void rndis_exit (void);
#endif /* _LINUX_RNDIS_H */
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index 30d7664d449d..e762aa19ab0a 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -1473,7 +1473,7 @@ autoconf_fail:
* Called on module unload. Frees the control request and device
* structure.
*/
-static void __exit gs_unbind(struct usb_gadget *gadget)
+static void /* __init_or_exit */ gs_unbind(struct usb_gadget *gadget)
{
struct gs_dev *dev = get_gadget_data(gadget);
diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c
index 3a08a7ab4ce0..b7018ee487ea 100644
--- a/drivers/usb/gadget/zero.c
+++ b/drivers/usb/gadget/zero.c
@@ -1121,7 +1121,7 @@ zero_autoresume (unsigned long _dev)
/*-------------------------------------------------------------------------*/
-static void __exit
+static void /* __init_or_exit */
zero_unbind (struct usb_gadget *gadget)
{
struct zero_dev *dev = get_gadget_data (gadget);
generated by cgit v1.2.3 (git 2.0.4) at 2024-07-21 07:26:06 +0000