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usb: gadget: f_uvc: fix potential memory leak

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If uvc->control_buf is successfuly allocated but uvc->control_req
is not, uvc->control_buf is not freed in the error recovery path.
With this patch applied uvc->control_buf is freed unconditionally;
if it happens to be NULL kfree on it is safe anyway.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Andrzej Pietrasiewicz 2014-08-21 16:54:45 +02:00 committed by Felipe Balbi
parent ee7ec7f6b3
commit e73798572e
1 changed files with 2 additions and 3 deletions
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5
drivers/usb/gadget/function/f_uvc.c
View File

@ -720,10 +720,9 @@ error:
if (uvc->video.ep)
uvc->video.ep->driver_data = NULL;
if (uvc->control_req) {
if (uvc->control_req)
usb_ep_free_request(cdev->gadget->ep0, uvc->control_req);
kfree(uvc->control_buf);
}
kfree(uvc->control_buf);
usb_free_all_descriptors(f);
return ret;