On Tue, 17 Apr 2012 12:19:16 +0200, Daniel Vetter <dan...@ffwll.ch> wrote:
> On Fri, Apr 13, 2012 at 05:08:47PM -0300, Eugeni Dodonov wrote:
> > Reviewed-by: Rodrigo Vivi <rodrigo.v...@gmail.com>
> > Signed-off-by: Eugeni Dodonov <eugeni.dodo...@intel.com>
> > ---
> >  drivers/gpu/drm/i915/intel_display.c |    2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/intel_display.c 
> > b/drivers/gpu/drm/i915/intel_display.c
> > index 3d78686..5ee652d 100644
> > --- a/drivers/gpu/drm/i915/intel_display.c
> > +++ b/drivers/gpu/drm/i915/intel_display.c
> > @@ -2427,7 +2427,7 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int 
> > y,
> >     case 1:
> >             break;
> >     case 2:
> > -           if (IS_IVYBRIDGE(dev))
> > +           if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
> >                     break;
> >             /* fall through otherwise */
> >     default:
> 
> Imo this code is a rather funky way to check for 3 plane support ... I
> think we should just replace this entire switch statement with a
> if(WARN_ON(intel_crtc->plane > dev_priv->num_pipes)) return -EINVAL;
> 
> Or has there been another reason for this? Chris, git blame says you've
> originally added this in 5c3b82e2, any comments?

Yup, it's just a userspace (and internal consistency) validation check, so
if (pipe >= dev_priv->num_pipes) return -EINVAL; would have sufficed.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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