On Sun, Jun 24, 2012 at 07:57:26PM -0300, Eugeni Dodonov wrote:
> On 06/24/2012 03:51 PM, Daniel Vetter wrote:
> > + /* Only enable AGP support for gen 3. */
> > + if (intel_info->gen != 3) {
> > + driver.driver_features &=
> > + ~(DRIVER_USE_AGP | DRIVER_REQUIRE_AGP);
> > + } else if (!intel_agp_enabled) {
> > + DRM_ERROR("drm/i915 can't work without intel_agp module!\n");
> > + return -ENODEV;
> > + }
> > +
>
> <bikeshed>
> For the future generations of developers to touch gen3 (or something
> older than gen3 :)), I'd suggest to expand the comment to explain why we
> need it on gen3 and not on all the other gens. I haven't seen this
> commented in any other agpgart killing patches, so perhaps this would be
> the best place.
> </bikeshed>
Well, the older series that rips out the midlayer-ish drm agp
initialization had more justification - we need it to support dead-broken
XvMC on gen3, which is using the old drm add_map stuff to access bos, even
when kms is enabled (gasp!). I'll add this little blurb to the comment
when applying.
-Daniel
--
Daniel Vetter
Mail: daniel at ffwll.ch
Mobile: +41 (0)79 365 57 48
