6.4-stable review patch. If anyone has any objections, please let me know.
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From: Hans de Goede hdegoede@redhat.com
[ Upstream commit c0e97a4b4f20639f74cd5809b42ba6cbf9736a7d ]
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@gmail.com Reviewed-by: Daniel Scally dan.scally@ideasonboard.com Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Sakari Ailus sakari.ailus@linux.intel.com Signed-off-by: Mauro Carvalho Chehab mchehab@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 6e0e8d21d189f..a24344ef9852c 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;