Hi Hans
On 27/06/2023 15:18, Hans de Goede wrote:
ov2680_set_fmt() which == V4L2_SUBDEV_FORMAT_TRY was getting
the try_fmt v4l2_mbus_framefmt struct from the passed in sd_state
and then storing the contents of that into the return by reference
format->format struct.
While the right thing to do would be filling format->format based on
the just looked up mode and then store the results of that in
sd_state->pads[0].try_fmt .
Before the previous change introducing ov2680_fill_format() this
resulted in ov2680_set_fmt() which == V4L2_SUBDEV_FORMAT_TRY always
returning the zero-ed out sd_state->pads[0].try_fmt in format->format
breaking callers using this.
After the introduction of ov2680_fill_format() which at least
initializes sd_state->pads[0].try_fmt properly, format->format
is now always being filled with the default 800x600 mode set by
ov2680_init_cfg() independent of the actual requested mode.
Move the filling of format->format with ov2680_fill_format() to
before the if (which == V4L2_SUBDEV_FORMAT_TRY) and then store
the filled in format->format in sd_state->pads[0].try_fmt to
fix this.
Note this removes the fmt local variable because IMHO having a local
variable which points to a sub-struct of one of the function arguments
just leads to confusion when reading the code.
Fixes: 3ee47cad3e69 ("media: ov2680: Add Omnivision OV2680 sensor driver")
Acked-by: Rui Miguel Silva <rmfrfs@xxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
For #5, #6 and this one:
Reviewed-by: Daniel Scally <dan.scally@xxxxxxxxxxxxxxxx>
drivers/media/i2c/ov2680.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/media/i2c/ov2680.c b/drivers/media/i2c/ov2680.c
index c4a46c734d82..7fc4b39ebb37 100644
--- a/drivers/media/i2c/ov2680.c
+++ b/drivers/media/i2c/ov2680.c
@@ -603,7 +603,6 @@ static int ov2680_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_format *format)
{
struct ov2680_dev *sensor = to_ov2680_dev(sd);
- struct v4l2_mbus_framefmt *fmt = &format->format;
struct v4l2_mbus_framefmt *try_fmt;
const struct ov2680_mode_info *mode;
int ret = 0;
@@ -612,14 +611,18 @@ static int ov2680_set_fmt(struct v4l2_subdev *sd,
return -EINVAL;
mode = v4l2_find_nearest_size(ov2680_mode_data,
- ARRAY_SIZE(ov2680_mode_data), width,
- height, fmt->width, fmt->height);
+ ARRAY_SIZE(ov2680_mode_data),
+ width, height,
+ format->format.width,
+ format->format.height);
if (!mode)
return -EINVAL;
+ ov2680_fill_format(sensor, &format->format, mode->width, mode->height);
+
if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
try_fmt = v4l2_subdev_get_try_format(sd, sd_state, 0);
- format->format = *try_fmt;
+ *try_fmt = format->format;
return 0;
}
@@ -630,8 +633,6 @@ static int ov2680_set_fmt(struct v4l2_subdev *sd,
goto unlock;
}
- ov2680_fill_format(sensor, fmt, mode->width, mode->height);
-
sensor->current_mode = mode;
sensor->fmt = format->format;
sensor->mode_pending_changes = true;
