Re: [Intel-gfx] [PATCH 11/12] drm/i915: Accurately initialize fifo underrun state on gmch platforms

On Wed, 2014-05-14 at 20:51 +0200, Daniel Vetter wrote: > We don't have hardware based disable bits on gmch platforms, so need > to block spurious underrun reports in software. Which means that we > _must_ start out with fifo underrun reporting disabled everywhere. > > This is in big contrast to i

[Intel-gfx] [PATCH 11/12] drm/i915: Accurately initialize fifo underrun state on gmch platforms

We don't have hardware based disable bits on gmch platforms, so need to block spurious underrun reports in software. Which means that we _must_ start out with fifo underrun reporting disabled everywhere. This is in big contrast to ilk/hsw/cpt where there's only _one_ disable bit for all platforms