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    Subject[PATCH 3.18 59/93] media: v4l2-compat-ioctl32.c: add missing VIDIOC_PREPARE_BUF
    Date
    3.18-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Hans Verkuil <hans.verkuil@cisco.com>

    commit 3ee6d040719ae09110e5cdf24d5386abe5d1b776 upstream.

    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: Sasha Levin <alexander.levin@microsoft.com>
    Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
    +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
    @@ -996,6 +996,7 @@ static long do_video_ioctl(struct file *
    err = put_v4l2_create32(&karg.v2crt, up);
    break;

    + case VIDIOC_PREPARE_BUF:
    case VIDIOC_QUERYBUF:
    case VIDIOC_QBUF:
    case VIDIOC_DQBUF:

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