Hi Hugues,
On Thu, Jun 21, 2018 at 10:53:39AM +0200, Hugues Fruchet wrote:
> Driver must reject frame interval enumeration of unsupported resolution.
> This was detected by v4l2-compliance format ioctl test:
> v4l2-compliance Format ioctls:
> info: found 2 frameintervals for pixel format 4745504a and size 176x144
> fail: v4l2-test-formats.cpp(123):
>found frame intervals for invalid size 177x144
> test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: FAIL
>
> Signed-off-by: Hugues Fruchet
> ---
> version 2:
> - revisit patch according to Mauro comments:
> See
> https://www.mail-archive.com/linux-media@vger.kernel.org/msg127380.html
>
> version 3:
> - revisit patch using v4l2_find_nearest_size() helper as per Sakari
> suggestion:
> See
> https://www.mail-archive.com/linux-media@vger.kernel.org/msg128186.html
>
> version 4:
> - fix sparse warning:
> See
> https://www.mail-archive.com/linux-media@vger.kernel.org/msg132925.html
>
> drivers/media/i2c/ov5640.c | 34 --
> 1 file changed, 16 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
> index f6e40cc..4257ca6 100644
> --- a/drivers/media/i2c/ov5640.c
> +++ b/drivers/media/i2c/ov5640.c
> @@ -1389,24 +1389,16 @@ static int ov5640_set_timings(struct ov5640_dev
> *sensor,
> ov5640_find_mode(struct ov5640_dev *sensor, enum ov5640_frame_rate fr,
>int width, int height, bool nearest)
> {
> - const struct ov5640_mode_info *mode = NULL;
> - int i;
> -
> - for (i = OV5640_NUM_MODES - 1; i >= 0; i--) {
> - mode = _mode_data[fr][i];
> -
> - if (!mode->reg_data)
> - continue;
> + const struct ov5640_mode_info *mode;
>
> - if ((nearest && mode->hact <= width &&
> - mode->vact <= height) ||
> - (!nearest && mode->hact == width &&
> - mode->vact == height))
> - break;
> - }
> + mode = v4l2_find_nearest_size(_mode_data[fr][0],
> + ARRAY_SIZE(ov5640_mode_data[fr]),
> + hact, vact,
> + width, height);
I noticed the warning, too, but I think the fix should be done into the
macro, not to each driver individually. I'll see if that'd work out, and if
so, I'll go with v3.
>
> - if (nearest && i < 0)
> - mode = _mode_data[fr][0];
> + if (!mode ||
> + (!nearest && (mode->hact != width || mode->vact != height)))
> + return NULL;
>
> return mode;
> }
> @@ -2435,8 +2427,14 @@ static int ov5640_s_frame_interval(struct v4l2_subdev
> *sd,
>
> sensor->current_fr = frame_rate;
> sensor->frame_interval = fi->interval;
> - sensor->current_mode = ov5640_find_mode(sensor, frame_rate, mode->hact,
> - mode->vact, true);
> + mode = ov5640_find_mode(sensor, frame_rate, mode->hact,
> + mode->vact, true);
> + if (!mode) {
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + sensor->current_mode = mode;
> sensor->pending_mode_change = true;
> out:
> mutex_unlock(>lock);
> --
> 1.9.1
>
--
Sakari Ailus
e-mail: sakari.ai...@iki.fi
