[PATCH AUTOSEL 4.14 076/130] media: v4l2-core: fix touch support in v4l_g_fmt

Sasha Levin
2019-12-10T22:08:38Z

From: Vandana BN <bnvandana@gmail.com>

[ Upstream commit 545b618cfb5cadacd00c25066b9a36540e5ca9e9 ]

v4l_s_fmt, for VFL_TYPE_TOUCH, sets unneeded members of
the v4l2_pix_format structure to default values.This was
missing in v4l_g_fmt, which would lead to failures in
v4l2-compliance tests.

Signed-off-by: Vandana BN <bnvandana@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/media/v4l2-core/v4l2-ioctl.c | 33 +++++++++++++++-------------
1 file changed, 18 insertions(+), 15 deletions(-)

diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 681eef972e63b..7cafc8a57950a 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1363,10 +1363,26 @@ static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
return ret;
}

+static void v4l_pix_format_touch(struct v4l2_pix_format *p)
+{
+ /*
+ * The v4l2_pix_format structure contains fields that make no sense for
+ * touch. Set them to default values in this case.
+ */
+
+ p->field = V4L2_FIELD_NONE;
+ p->colorspace = V4L2_COLORSPACE_RAW;
+ p->flags = 0;
+ p->ycbcr_enc = 0;
+ p->quantization = 0;
+ p->xfer_func = 0;
+}
+
static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
struct v4l2_format *p = arg;
+ struct video_device *vfd = video_devdata(file);
int ret = check_fmt(file, p->type);

if (ret)
@@ -1404,6 +1420,8 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
/* just in case the driver zeroed it again */
p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
+ if (vfd->vfl_type == VFL_TYPE_TOUCH)
+ v4l_pix_format_touch(&p->fmt.pix);
return ret;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
@@ -1439,21 +1457,6 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
return -EINVAL;
}

-static void v4l_pix_format_touch(struct v4l2_pix_format *p)
-{
- /*
- * The v4l2_pix_format structure contains fields that make no sense for
- * touch. Set them to default values in this case.
- */
-
- p->field = V4L2_FIELD_NONE;
- p->colorspace = V4L2_COLORSPACE_RAW;
- p->flags = 0;
- p->ycbcr_enc = 0;
- p->quantization = 0;
- p->xfer_func = 0;
-}
-
static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
--
2.20.1