Hello!
On 3/14/2017 9:59 PM, Niklas Söderlund wrote:
The rcar-vin driver only uses one pad, pad number 0.
- All v4l2 operations that did not check that the requested operation
was for pad 0 have been updated with a check to enforce this.
- All v4l2 operations that stored (and later restore) the requested pad
Restored?
before substituting it for the subdevice pad number have been updated
to not store the incoming pad and simply restore it to 0 after the
subdevice operation is complete.
Signed-off-by: Niklas Söderlund <niklas.soderlund+rene...@ragnatech.se>
---
drivers/media/platform/rcar-vin/rcar-v4l2.c | 26 ++++++++++++++------------
1 file changed, 14 insertions(+), 12 deletions(-)
diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c
b/drivers/media/platform/rcar-vin/rcar-v4l2.c
index 7ca27599b9982ffc..610f59e2a9142622 100644
--- a/drivers/media/platform/rcar-vin/rcar-v4l2.c
+++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c
@@ -550,14 +550,16 @@ static int rvin_enum_dv_timings(struct file *file, void
*priv_fh,
{
struct rvin_dev *vin = video_drvdata(file);
struct v4l2_subdev *sd = vin_to_source(vin);
- int pad, ret;
+ int ret;
+
+ if (timings->pad)
+ return -EINVAL;
- pad = timings->pad;
timings->pad = vin->sink_pad_idx;
ret = v4l2_subdev_call(sd, pad, enum_dv_timings, timings);
Does this still compile after you removed 'pad'?
- timings->pad = pad;
+ timings->pad = 0;
return ret;
}
@@ -600,14 +602,16 @@ static int rvin_dv_timings_cap(struct file *file, void
*priv_fh,
{
struct rvin_dev *vin = video_drvdata(file);
struct v4l2_subdev *sd = vin_to_source(vin);
- int pad, ret;
+ int ret;
+
+ if (cap->pad)
+ return -EINVAL;
- pad = cap->pad;
cap->pad = vin->sink_pad_idx;
ret = v4l2_subdev_call(sd, pad, dv_timings_cap, cap);
And this?
- cap->pad = pad;
+ cap->pad = 0;
return ret;
}
[...]
MBR, Sergei
