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media: imx274: fix frame interval handling 

1) the numerator and/or denominator might be 0, in that case
   fall back to the default frame interval. This is per the spec
   and this caused a v4l2-compliance failure.

2) the updated frame interval wasn't returned in the s_frame_interval
   subdev op.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Hans Verkuil 2020-07-03 11:20:32 +02:00 committed by Mauro Carvalho Chehab
parent 52438c4463
commit 49b20d981d
1 changed files with 5 additions and 3 deletions
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8
drivers/media/i2c/imx274.c
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@ -1235,6 +1235,8 @@ static int imx274_s_frame_interval(struct v4l2_subdev *sd,
ret = imx274_set_frame_interval(imx274, fi->interval);
if (!ret) {
fi->interval = imx274->frame_interval;
/*
* exposure time range is decided by frame interval
* need to update it after frame interval changes
@ -1730,9 +1732,9 @@ static int imx274_set_frame_interval(struct stimx274 *priv,
__func__, frame_interval.numerator,
frame_interval.denominator);
if (frame_interval.numerator == 0) {
err = -EINVAL;
goto fail;
if (frame_interval.numerator == 0 || frame_interval.denominator == 0) {
frame_interval.denominator = IMX274_DEF_FRAME_RATE;
frame_interval.numerator = 1;
}
req_frame_rate = (u32)(frame_interval.denominator