[v1,media] uvcvideo: mark buffer error where overflow

Message ID 1504753188-8766-1-git-send-email-baoyou.xie@linaro.org
State New
Headers show
Series
  • [v1,media] uvcvideo: mark buffer error where overflow
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Commit Message

Baoyou Xie Sept. 7, 2017, 2:59 a.m.
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>

---
 drivers/media/usb/uvc/uvc_video.c | 1 +
 1 file changed, 1 insertion(+)

-- 
2.7.4

Patch

diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
index fb86d6a..81a3530 100644
--- a/drivers/media/usb/uvc/uvc_video.c
+++ b/drivers/media/usb/uvc/uvc_video.c
@@ -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;
 	}
 }