Re: [PATCH v2 2/2] media: i2c: Add driver for Sony IMX728

[Markus Elfring]

…
> +++ b/drivers/media/i2c/imx728.c
> @@ -0,0 +1,4660 @@
…
> +static int imx728_set_fmt(struct v4l2_subdev *sd,
> +                         struct v4l2_subdev_state *state,
> +                         struct v4l2_subdev_format *fmt)
> +{
…
> +       mutex_lock(&imx728->lock);
> +
> +       fmt->format.field = V4L2_FIELD_NONE;
…
> +       *format = fmt->format;
> +
> +done:
> +       mutex_unlock(&imx728->lock);
> +
> +       return ret;
> +}
…

Under which circumstances would you become interested to apply a statement
like “guard(mutex)(&imx728->lock);”?
https://elixir.bootlin.com/linux/v6.10-rc5/source/include/linux/mutex.h#L196

Regards,
Markus