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105 lines
4.7 KiB
105 lines
4.7 KiB
From patchwork Fri Aug 18 07:17:56 2017
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Fri, 18 Aug 2017 00:18:59 -0700 (PDT)
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From: Baoyou Xie <baoyou.xie@linaro.org>
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To: laurent.pinchart@ideasonboard.com, mchehab@kernel.org
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Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
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shawnguo@kernel.org, baoyou.xie@gmail.com, baoyou.xie@zte.com.cn,
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jun.nie@linaro.org, broonie@kernel.org, arnd@arndb.de,
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Baoyou Xie <baoyou.xie@linaro.org>
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Subject: [PATCH v1] [media] uvcvideo: mark buffer error where overflow
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Date: Fri, 18 Aug 2017 15:17:56 +0800
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Message-Id: <1503040676-28802-1-git-send-email-baoyou.xie@linaro.org>
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Some cameras post inaccurate frame where next frame data overlap
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it. this results in screen flicker, and it need to be prevented.
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So this patch marks the buffer error to discard the frame where
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buffer overflow.
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Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
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---
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drivers/media/usb/uvc/uvc_video.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
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index fb86d6a..81a3530 100644
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--- a/drivers/media/usb/uvc/uvc_video.c
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+++ b/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,
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/* Complete the current frame if the buffer size was exceeded. */
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if (len > maxlen) {
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uvc_trace(UVC_TRACE_FRAME, "Frame complete (overflow).\n");
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+ buf->error = 1;
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buf->state = UVC_BUF_STATE_READY;
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}
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}
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