[PATCH 1/2] drm: provide a helper for the encoder possible_crtcs mask

[David Herrmann]

Hi Russel

On Mon, Jan 13, 2014 at 1:47 PM, Russell King - ARM Linux
<linux at arm.linux.org.uk> wrote:
> On Mon, Jan 13, 2014 at 12:58:54PM +0100, David Herrmann wrote:
>> Does that -1 ever make sense? We don't support mode-object-hotplugging
>> so all "drm_crtc" objects are known at initialization time. I'd rather
>> put a BUG() here than a silent -1. This also makes drm_crtc_mask()
>> redundant.
>
> I disagree with that last statement.  drm_crtc_mask() is still useful
> for converting to the mask, rather than having that open coded all
> over the place.  It probably makes more sense for drm_crtc_mask() to
> become a helper in a header file though.

Thierry renamed your helper to drm_crtc_index() and added
drm_crtc_mask(). If we remove the -1, drm_crtc_mask() is redundant as
it just calls drm_crtc_index(). So I cannot follow what you mean by
"open coded all over the place". I guess you were talking about
drm_crtc_index()?

Thanks
David