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usb: gadget: uvc: dont drop frames if zero length packages are late

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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 <m.grzeschik@pengutronix.de>
Link: https://lore.kernel.org/r/20240214-uvc-error-tag-v1-1-37659a3877fe@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Grzeschik 2024-02-14 00:37:54 +01:00 committed by Greg Kroah-Hartman
parent 58da4e57cb
commit ab9ffa51d5
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/gadget/function/uvc_video.c
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@ -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. */