diff mbox series

[53/57] media: atomisp: ov2722: Don't take the input_lock for try_fmt calls.

Message ID 20230123125205.622152-54-hdegoede@redhat.com (mailing list archive)
State New, archived
Headers show
Series media: atomisp: Big power-management changes + lots of fixes | expand

Commit Message

Hans de Goede Jan. 23, 2023, 12:52 p.m. UTC
On ov2722_set_fmt() calls with format->which == V4L2_SUBDEV_FORMAT_TRY,
ov2722_set_fmt() does not talk to the sensor, so there is no need to
lock the dev->input_lock mutex in this case.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/staging/media/atomisp/i2c/atomisp-ov2722.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Comments

Andy Shevchenko Jan. 23, 2023, 6:39 p.m. UTC | #1
On Mon, Jan 23, 2023 at 01:52:01PM +0100, Hans de Goede wrote:
> On ov2722_set_fmt() calls with format->which == V4L2_SUBDEV_FORMAT_TRY,
> ov2722_set_fmt() does not talk to the sensor, so there is no need to
> lock the dev->input_lock mutex in this case.

Reviewed-by: Andy Shevchenko <andy@kernel.org>

> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
> ---
>  drivers/staging/media/atomisp/i2c/atomisp-ov2722.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c b/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c
> index 83d036b5d772..e09c80d1f9ec 100644
> --- a/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c
> +++ b/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c
> @@ -651,7 +651,6 @@ static int ov2722_set_fmt(struct v4l2_subdev *sd,
>  	if (!ov2722_info)
>  		return -EINVAL;
>  
> -	mutex_lock(&dev->input_lock);
>  	res = v4l2_find_nearest_size(ov2722_res_preview,
>  				     ARRAY_SIZE(ov2722_res_preview), width,
>  				     height, fmt->width, fmt->height);
> @@ -665,10 +664,10 @@ static int ov2722_set_fmt(struct v4l2_subdev *sd,
>  	fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
>  	if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
>  		sd_state->pads->try_fmt = *fmt;
> -		mutex_unlock(&dev->input_lock);
>  		return 0;
>  	}
>  
> +	mutex_lock(&dev->input_lock);
>  
>  	dev->pixels_per_line = dev->res->pixels_per_line;
>  	dev->lines_per_frame = dev->res->lines_per_frame;
> -- 
> 2.39.0
>
diff mbox series

Patch

diff --git a/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c b/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c
index 83d036b5d772..e09c80d1f9ec 100644
--- a/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c
+++ b/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c
@@ -651,7 +651,6 @@  static int ov2722_set_fmt(struct v4l2_subdev *sd,
 	if (!ov2722_info)
 		return -EINVAL;
 
-	mutex_lock(&dev->input_lock);
 	res = v4l2_find_nearest_size(ov2722_res_preview,
 				     ARRAY_SIZE(ov2722_res_preview), width,
 				     height, fmt->width, fmt->height);
@@ -665,10 +664,10 @@  static int ov2722_set_fmt(struct v4l2_subdev *sd,
 	fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
 	if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
 		sd_state->pads->try_fmt = *fmt;
-		mutex_unlock(&dev->input_lock);
 		return 0;
 	}
 
+	mutex_lock(&dev->input_lock);
 
 	dev->pixels_per_line = dev->res->pixels_per_line;
 	dev->lines_per_frame = dev->res->lines_per_frame;