[PATCH v8 14/23] usb: gadget: audio: allocate and init otg descriptor by otg capabilities
DORMANTno replies
REVIEWED: 1 (0M)
From: Li Jun <hidden>
Date: 2015-07-23 03:37:38
Subsystem:
the rest, usb subsystem · Maintainers:
Linus Torvalds, Greg Kroah-Hartman
1 review trailer.
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. Signed-off-by: Li Jun <redacted> Reviewed-by: Roger Quadros <redacted> --- drivers/usb/gadget/legacy/audio.c | 34 +++++++++++++++++++--------------- 1 file changed, 19 insertions(+), 15 deletions(-)
diff --git a/drivers/usb/gadget/legacy/audio.c b/drivers/usb/gadget/legacy/audio.c
index f289caf..51a2380 100644
--- a/drivers/usb/gadget/legacy/audio.c
+++ b/drivers/usb/gadget/legacy/audio.c@@ -150,20 +150,7 @@ static struct usb_device_descriptor device_desc = { .bNumConfigurations = 1, }; -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]; /*-------------------------------------------------------------------------*/
@@ -259,14 +246,28 @@ static int audio_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(cdev->gadget) && !otg_desc[0]) { + struct usb_descriptor_header *usb_desc; + + usb_desc = usb_otg_descriptor_alloc(cdev->gadget); + if (!usb_desc) + goto fail; + usb_otg_descriptor_init(cdev->gadget, usb_desc); + otg_desc[0] = usb_desc; + otg_desc[1] = NULL; + } + status = usb_add_config(cdev, &audio_config_driver, audio_do_config); if (status < 0) - goto fail; + goto fail_otg_desc; usb_composite_overwrite_options(cdev, &coverwrite); INFO(cdev, "%s, version: %s\n", DRIVER_DESC, DRIVER_VERSION); return 0; +fail_otg_desc: + kfree(otg_desc[0]); + otg_desc[0] = NULL; fail: #ifndef CONFIG_GADGET_UAC1 usb_put_function_instance(fi_uac2);
@@ -289,6 +290,9 @@ static int audio_unbind(struct usb_composite_dev *cdev) if (!IS_ERR_OR_NULL(fi_uac2)) usb_put_function_instance(fi_uac2); #endif + kfree(otg_desc[0]); + otg_desc[0] = NULL; + return 0; }
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html