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media: v4l2-compat-ioctl32.c: add missing VIDIOC_PREPARE_BUF

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The result of the VIDIOC_PREPARE_BUF ioctl was never copied back
to userspace since it was missing in the switch.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: <stable@vger.kernel.org>      # for v4.15 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Hans Verkuil 2018-01-24 08:37:04 -05:00 committed by Mauro Carvalho Chehab
parent 181a4a2d5a
commit 3ee6d04071
1 changed files with 1 additions and 0 deletions
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drivers/media/v4l2-core/v4l2-compat-ioctl32.c
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@ -1052,6 +1052,7 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
err = put_v4l2_create32(&karg.v2crt, up);
break;
case VIDIOC_PREPARE_BUF:
case VIDIOC_QUERYBUF:
case VIDIOC_QBUF:
case VIDIOC_DQBUF: