On 07/21/2014 11:11 AM, Laurent Pinchart wrote:
> Hi Hans,
>
> Thank you for the patch.
>
> On Sunday 20 July 2014 15:10:03 Hans Verkuil wrote:
>> Regression fix:
>>
>> V4L2_PIX_FMT_PRIV_MAGIC should only be set for the VIDEO_CAPTURE and
>> VIDEO_OUTPUT buffer types, and not for any others. In the case of
>> the win format this overwrites a pointer value that is passed in from
>> userspace.
>>
>> Since it is already set for the VIDEO_CAPTURE and VIDEO_OUTPUT cases
>> anyway this line can just be dropped.
>
> It's set after calling the vidioc_g_fmt_vid_cap or vidioc_g_fmt_vid_out
> operation, which means that driver will not see the flag being set. Couldn't
> that be an issue ?
While I don't think it is necessary as such, it is better for consistency.
I'll post a new patch.
Regards,
Hans
>
>> Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
>> ---
>> drivers/media/v4l2-core/v4l2-ioctl.c | 2 --
>> 1 file changed, 2 deletions(-)
>>
>> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c
>> b/drivers/media/v4l2-core/v4l2-ioctl.c index e620387..c11a13d 100644
>> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
>> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
>> @@ -1143,8 +1143,6 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
>> bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
>> int ret;
>>
>> - p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
>> -
>> /*
>> * fmt can't be cleared for these overlay types due to the 'clips'
>> * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
>
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