From faf67322dc59954b01da29897df0b3f057e526eb Mon Sep 17 00:00:00 2001
From: Stefano Sabatini <stefano.sabatini-lala@poste.it>
Date: Sat, 27 Dec 2008 11:40:07 +0000
Subject: [PATCH] Add missing check on the return value of the VIDIOCSWIN
 ioctl.

Originally committed as revision 16360 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavdevice/v4l.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libavdevice/v4l.c b/libavdevice/v4l.c
index b350adb0cd..af9f0a4713 100644
--- a/libavdevice/v4l.c
+++ b/libavdevice/v4l.c
@@ -181,7 +181,10 @@ static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
         s->video_win.chromakey = -1;
         s->video_win.flags = 0;
 
-        ioctl(video_fd, VIDIOCSWIN, s->video_win);
+        if (ioctl(video_fd, VIDIOCSWIN, s->video_win) < 0) {
+            av_log(s1, AV_LOG_ERROR, "VIDIOCSWIN: %s\n", strerror(errno));
+            goto fail;
+        }
 
         s->frame_format = pict.palette;