Re: [PATCH v8 44/55] [media] uapi/media.h: Add MEDIA_IOC_G_TOPOLOGY ioctl

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On 09/06/2015 02:03 PM, Mauro Carvalho Chehab wrote:
> Add a new ioctl that will report the entire topology on
> one go.
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx>

Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>

I do have one suggestion: media_v2_interface, media_v2_pad and media_v2_link all
have a 'flags' field, but it is not clear from the code in the header which flag
#defines are used for which struct. Perhaps a few comments would help with that.

> diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h
> index a1bd7afba110..b17f6763aff4 100644
> --- a/include/uapi/linux/media.h
> +++ b/include/uapi/linux/media.h

<snip>

> +
> +struct media_v2_pad {
> +	__u32 id;
> +	__u32 entity_id;
> +	__u32 flags;
> +	__u16 reserved[9];

Strange odd number here for no clear reason. Perhaps use 8 or 10 instead?

Anyway, you have my Ack.

Regards,

	Hans
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