diff options
| author | Li Jun <jun.li@freescale.com> | 2015-06-08 14:58:45 +0800 |
|---|---|---|
| committer | Li Jun <jun.li@freescale.com> | 2015-07-22 10:22:18 +0800 |
| commit | 6d1ea07423da46aef45e145543ce4d8eb862f337 (patch) | |
| tree | 4b0e74e9a003361f4043463f9a962630cfc6f2f6 | |
| parent | 57bb978267c22e7953dd2278aeb6d99e79d88ce9 (diff) | |
MLK-11266-1 usb: gadget: acm_ms: allocate and init otg descriptor by otg capabilities
Allocate and initialize usb otg descriptor according to gadget otg
capabilities, add it for each usb configurations. If otg capability
is not defined, keep its original otg descriptor unchanged.
Reviewed-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Li Jun <jun.li@freescale.com>
(cherry picked from commit daa65ba547bf9ba2702b57108d4c19bfa0ab749c)
| -rw-r--r-- | drivers/usb/gadget/acm_ms.c | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/drivers/usb/gadget/acm_ms.c b/drivers/usb/gadget/acm_ms.c index dd74b032753b..84bdbb02b2e0 100644 --- a/drivers/usb/gadget/acm_ms.c +++ b/drivers/usb/gadget/acm_ms.c @@ -58,21 +58,7 @@ static struct usb_device_descriptor device_desc = { /*.bNumConfigurations = DYNAMIC*/ }; -static struct usb_otg_descriptor otg_descriptor = { - .bLength = sizeof otg_descriptor, - .bDescriptorType = USB_DT_OTG, - - /* - * REVISIT SRP-only hardware is possible, although - * it would not be called "OTG" ... - */ - .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, -}; - -static const struct usb_descriptor_header *otg_desc[] = { - (struct usb_descriptor_header *) &otg_descriptor, - NULL, -}; +static const struct usb_descriptor_header *otg_desc[2]; /* string IDs are assigned dynamically */ static struct usb_string strings_dev[] = { @@ -225,10 +211,21 @@ static int __init acm_ms_bind(struct usb_composite_dev *cdev) device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; + if (gadget_is_otg(gadget) && !otg_desc[0]) { + struct usb_descriptor_header *usb_desc; + + usb_desc = usb_otg_descriptor_alloc(gadget); + if (!usb_desc) + goto fail_string_ids; + usb_otg_descriptor_init(gadget, usb_desc); + otg_desc[0] = usb_desc; + otg_desc[1] = NULL; + } + /* register our configuration */ status = usb_add_config(cdev, &acm_ms_config_driver, acm_ms_do_config); if (status < 0) - goto fail_string_ids; + goto fail_otg_desc; usb_composite_overwrite_options(cdev, &coverwrite); dev_info(&gadget->dev, "%s, version: " DRIVER_VERSION "\n", @@ -236,6 +233,9 @@ static int __init acm_ms_bind(struct usb_composite_dev *cdev) return 0; /* error recovery */ +fail_otg_desc: + kfree(otg_desc[0]); + otg_desc[0] = NULL; fail_string_ids: fsg_common_remove_luns(opts->common); fail_set_cdev: @@ -255,6 +255,9 @@ static int __exit acm_ms_unbind(struct usb_composite_dev *cdev) usb_put_function_instance(fi_msg); usb_put_function(f_acm); usb_put_function_instance(f_acm_inst); + kfree(otg_desc[0]); + otg_desc[0] = NULL; + return 0; } |