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media: uvcvideo: Mark buffer error where overflow

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Some cameras post inaccurate frame where next frame data overlap
it. this results in screen flicker, and it need to be prevented.

So this patch marks the buffer error to discard the frame where
buffer overflow.

Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Baoyou Xie 2017-09-06 22:59:48 -04:00 committed by Mauro Carvalho Chehab
parent 5ba3dff4f3
commit dfc1648c57
1 changed files with 1 additions and 0 deletions
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drivers/media/usb/uvc/uvc_video.c
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@ -1077,6 +1077,7 @@ static void uvc_video_decode_data(struct uvc_streaming *stream,
/* Complete the current frame if the buffer size was exceeded. */
if (len > maxlen) {
uvc_trace(UVC_TRACE_FRAME, "Frame complete (overflow).\n");
buf->error = 1;
buf->state = UVC_BUF_STATE_READY;
}
}