From: Michael Grzeschik Date: Tue, 13 Feb 2024 23:37:54 +0000 (+0100) Subject: usb: gadget: uvc: dont drop frames if zero length packages are late X-Git-Tag: microblaze-v6.10~40^2~76 X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=ab9ffa51d5a2f3145839ca59354b3f74d18f7e85;p=linux-2.6-microblaze.git usb: gadget: uvc: dont drop frames if zero length packages are late If the request that was missed was zero bytes long, it is likely that the overall transferred frame was not affected. So don't flag the frame incomplete in that case. Signed-off-by: Michael Grzeschik Link: https://lore.kernel.org/r/20240214-uvc-error-tag-v1-1-37659a3877fe@pengutronix.de Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/gadget/function/uvc_video.c b/drivers/usb/gadget/function/uvc_video.c index ff7c1fa5c48f..d677d7daa187 100644 --- a/drivers/usb/gadget/function/uvc_video.c +++ b/drivers/usb/gadget/function/uvc_video.c @@ -398,7 +398,8 @@ uvc_video_complete(struct usb_ep *ep, struct usb_request *req) case -EXDEV: uvcg_dbg(&video->uvc->func, "VS request missed xfer.\n"); - queue->flags |= UVC_QUEUE_DROP_INCOMPLETE; + if (req->length != 0) + queue->flags |= UVC_QUEUE_DROP_INCOMPLETE; break; case -ESHUTDOWN: /* disconnect from host. */