releases/3.18.103/media-v4l2-compat-ioctl32.c-add-missing-vidioc_prepare_buf.patch

   1 From 3ee6d040719ae09110e5cdf24d5386abe5d1b776 Mon Sep 17 00:00:00 2001
   2 From: Hans Verkuil <hans.verkuil@cisco.com>
   3 Date: Wed, 24 Jan 2018 08:37:04 -0500
   4 Subject: media: v4l2-compat-ioctl32.c: add missing VIDIOC_PREPARE_BUF
   5
   6 From: Hans Verkuil <hans.verkuil@cisco.com>
   7
   8 commit 3ee6d040719ae09110e5cdf24d5386abe5d1b776 upstream.
   9
  10 The result of the VIDIOC_PREPARE_BUF ioctl was never copied back
  11 to userspace since it was missing in the switch.
  12
  13 Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
  14 Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
  15 Cc: <stable@vger.kernel.org>      # for v4.15 and up
  16 Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
  17 Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
  18 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  19
  20 ---
  21  drivers/media/v4l2-core/v4l2-compat-ioctl32.c |    1 +
  22  1 file changed, 1 insertion(+)
  23
  24 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
  25 +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
  26 @@ -996,6 +996,7 @@ static long do_video_ioctl(struct file *
  27                 err = put_v4l2_create32(&karg.v2crt, up);
  28                 break;
  29
  30 +       case VIDIOC_PREPARE_BUF:
  31         case VIDIOC_QUERYBUF:
  32         case VIDIOC_QBUF:
  33         case VIDIOC_DQBUF: