On 06/19/2015 09:31 AM, Jacek Anaszewski wrote:
> This patch adds helper functions for registering/unregistering
> LED Flash class devices as V4L2 sub-devices. The functions should
> be called from the LED subsystem device driver. In case the
> support for V4L2 Flash sub-devices is disabled in the kernel
> config the functions' empty versions will be used.
>
> Signed-off-by: Jacek Anaszewski <j.anaszewski@xxxxxxxxxxx>
> Acked-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
> Cc: Sakari Ailus <sakari.ailus@xxxxxx>
> Cc: Hans Verkuil <hans.verkuil@xxxxxxxxx>
> ---
> - fixed possible NULL fled_cdev pointer dereference
> in the v4l2_flash_init function
>
> drivers/media/v4l2-core/Kconfig | 11 +
> drivers/media/v4l2-core/Makefile | 2 +
> drivers/media/v4l2-core/v4l2-flash-led-class.c | 710 ++++++++++++++++++++++++
> include/media/v4l2-flash-led-class.h | 148 +++++
> 4 files changed, 871 insertions(+)
> create mode 100644 drivers/media/v4l2-core/v4l2-flash-led-class.c
> create mode 100644 include/media/v4l2-flash-led-class.h
>
<snip>
> diff --git a/drivers/media/v4l2-core/v4l2-flash-led-class.c b/drivers/media/v4l2-core/v4l2-flash-led-class.c
> new file mode 100644
> index 0000000..5bdfb8d
> --- /dev/null
> +++ b/drivers/media/v4l2-core/v4l2-flash-led-class.c
<snip>
> +static const struct v4l2_subdev_core_ops v4l2_flash_core_ops = {
> + .queryctrl = v4l2_subdev_queryctrl,
> + .querymenu = v4l2_subdev_querymenu,
Why are these here? This should not be necessary. As long as the sd.ctrl_handler
pointer is set, this is handled automatically.
> +};
> +
> +static const struct v4l2_subdev_ops v4l2_flash_subdev_ops = {
> + .core = &v4l2_flash_core_ops,
> +};
> +
And if v4l2_flash_core_ops goes away, then this can go away as well.
I know this driver has been merged, but I just noticed this while looking at
something else.
Regards,
Hans
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