V4L/DVB (7854): cx18/ivtv: improve and fix out-of-memory handling
- don't show kernel backtrace when the allocation of the buffers fails: the
normal ivtv/cx18 messages are clear enough and the backtrace scares users.
- fix cleanup after the buffer allocation fails (caused kernel panic).
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/cx18/cx18-streams.c b/drivers/media/video/cx18/cx18-streams.c
index afb141b..4ca9d84 100644
--- a/drivers/media/video/cx18/cx18-streams.c
+++ b/drivers/media/video/cx18/cx18-streams.c
@@ -218,7 +218,7 @@
return 0;
/* One or more streams could not be initialized. Clean 'em all up. */
- cx18_streams_cleanup(cx);
+ cx18_streams_cleanup(cx, 0);
return -ENOMEM;
}
@@ -296,12 +296,12 @@
return 0;
/* One or more streams could not be initialized. Clean 'em all up. */
- cx18_streams_cleanup(cx);
+ cx18_streams_cleanup(cx, 1);
return -ENOMEM;
}
/* Unregister v4l2 devices */
-void cx18_streams_cleanup(struct cx18 *cx)
+void cx18_streams_cleanup(struct cx18 *cx, int unregister)
{
struct video_device *vdev;
int type;
@@ -319,8 +319,11 @@
cx18_stream_free(&cx->streams[type]);
- /* Unregister device */
- video_unregister_device(vdev);
+ /* Unregister or release device */
+ if (unregister)
+ video_unregister_device(vdev);
+ else
+ video_device_release(vdev);
}
}