Re: [PATCH] v4l subdev: add dispatching for VIDIOC_DBG_G_REGISTER and VIDIOC_DBG_S_REGISTER.

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Hi Martin,

Thanks for the patch.

On Saturday 17 September 2011 11:26:36 Martin Hostettler wrote:
> Ioctls on the subdevs node currently don't dispatch the register access
> debug driver callbacks. Add the dispatching with the same security checks
> are for non subdev video nodes (i.e. only capable(CAP_SYS_ADMIN may call
> the register access ioctls).

Can we get your SoB line ? If you resubmit the patch, please fold the commit 
message at 72 columns to keep git happy.

> ---
>  drivers/media/video/v4l2-subdev.c |   20 ++++++++++++++++++++
>  1 files changed, 20 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/media/video/v4l2-subdev.c
> b/drivers/media/video/v4l2-subdev.c index b7967c9..8bf8397 100644
> --- a/drivers/media/video/v4l2-subdev.c
> +++ b/drivers/media/video/v4l2-subdev.c
> @@ -25,6 +25,7 @@
>  #include <linux/types.h>
>  #include <linux/videodev2.h>
> 
> +#include <media/v4l2-chip-ident.h>

Is this needed ?

>  #include <media/v4l2-ctrls.h>
>  #include <media/v4l2-device.h>
>  #include <media/v4l2-ioctl.h>
> @@ -173,6 +174,25 @@ static long subdev_do_ioctl(struct file *file,
> unsigned int cmd, void *arg)
> 
>  	case VIDIOC_UNSUBSCRIBE_EVENT:
>  		return v4l2_subdev_call(sd, core, unsubscribe_event, vfh, arg);
> +
> +#ifdef CONFIG_VIDEO_ADV_DEBUG
> +	case VIDIOC_DBG_G_REGISTER:
> +	{
> +		struct v4l2_dbg_register *p = arg;
> +
> +		if (!capable(CAP_SYS_ADMIN))
> +			return -EPERM;
> +		return v4l2_subdev_call(sd, core, g_register, p);
> +	}
> +	case VIDIOC_DBG_S_REGISTER:
> +	{
> +		struct v4l2_dbg_register *p = arg;
> +
> +		if (!capable(CAP_SYS_ADMIN))
> +			return -EPERM;
> +		return v4l2_subdev_call(sd, core, s_register, p);
> +	}
> +#endif
>  #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
>  	case VIDIOC_SUBDEV_G_FMT: {
>  		struct v4l2_subdev_format *format = arg;

-- 
Regards,

Laurent Pinchart
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