diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2018-02-14 12:48:18 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-17 13:21:15 +0100 |
| commit | e78d9fdf5ecce2830d76d54017c3d8531bf9b119 (patch) | |
| tree | 761126a390bb4b1fbcc785a4096ea76896019f7d | |
| parent | daaa81c48402da28cc9e32ad55c48fb05e61b005 (diff) | |
media: v4l2-ioctl.c: don't copy back the result for -ENOTTY
commit 181a4a2d5a0a7b43cab08a70710d727e7764ccdd upstream.
If the ioctl returned -ENOTTY, then don't bother copying
back the result as there is no point.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ioctl.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index c52d94c018bb..4510e8a37244 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -2862,8 +2862,11 @@ video_usercopy(struct file *file, unsigned int cmd, unsigned long arg, /* Handles IOCTL */ err = func(file, cmd, parg); - if (err == -ENOIOCTLCMD) + if (err == -ENOTTY || err == -ENOIOCTLCMD) { err = -ENOTTY; + goto out; + } + if (err == 0) { if (cmd == VIDIOC_DQBUF) trace_v4l2_dqbuf(video_devdata(file)->minor, parg); |