Re: [RFC 07/13] v4l2: device_register_subdev_nodes: allow calling multiple times

From: Sakari Ailus
Date: Tue Feb 14 2017 - 17:03:05 EST


Hi Pavel and Sebastian,

On Tue, Feb 14, 2017 at 02:40:00PM +0100, Pavel Machek wrote:
> From: Sebastian Reichel <sre@xxxxxxxxxx>
>
> Without this, exposure / gain controls do not work in the camera application.

:-)

>
> Signed-off-by: Sebastian Reichel <sre@xxxxxxxxxx>
> Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@xxxxxxxxx>
> Signed-off-by: Pavel Machek <pavel@xxxxxx>
> ---
> drivers/media/v4l2-core/v4l2-device.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/media/v4l2-core/v4l2-device.c b/drivers/media/v4l2-core/v4l2-device.c
> index f364cc1..b3afbe8 100644
> --- a/drivers/media/v4l2-core/v4l2-device.c
> +++ b/drivers/media/v4l2-core/v4l2-device.c
> @@ -235,6 +235,9 @@ int v4l2_device_register_subdev_nodes(struct v4l2_device *v4l2_dev)
> if (!(sd->flags & V4L2_SUBDEV_FL_HAS_DEVNODE))
> continue;
>
> + if(sd->devnode)
> + continue;

This has been recognised as a problem but you're the first to submit a patch
I believe. Please add an appropriate description. :-)

s/if\(/if (/

I think this one should go in before the rest.

> +
> vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
> if (!vdev) {
> err = -ENOMEM;

--
Kind regards,

Sakari Ailus
e-mail: sakari.ailus@xxxxxx XMPP: sailus@xxxxxxxxxxxxxx