[Intel-gfx] [PATCH] drm/i915/skl: revert duplicated WaBarrierPerformanceFixDisable:skl

[Daniel Vetter]

On Thu, Jul 30, 2015 at 02:52:07PM -0700, Rodrigo Vivi wrote:
> good catch.
> 
> Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>

Queued for -next, thanks for the patch.
-Daniel

> 
> On Wed, Jul 29, 2015 at 12:21 PM, Marc Herbert <marc.herbert at intel.com> wrote:
> > With this simple git diff command one can see that skl_init_workarounds()
> > got two copies of WaBarrierPerformanceFixDisable:skl:
> >
> >  git diff -U21 ca6e4405779e^1 ca6e4405779e drivers/gpu/drm/i915/intel_ringbuffer.c
> >
> > This happened when the backmerge of drm-intel-fixes-2015-07-15
> > Merged the same fix on both sides. Same fix but not identical enough for
> > git: with a different surrounding context; hence the code duplication.
> >
> > This commit merely reverts the output of the git command above
> >  = the duplication introduced in the backmerge.
> >
> > (This duplication was found while running git sanity checks on a
> > _linearized_ i915 forklift for ChromeOS.)
> >
> > Signed-off-by: Marc Herbert <marc.herbert at intel.com>
> > ---
> >  drivers/gpu/drm/i915/intel_ringbuffer.c | 7 -------
> >  1 file changed, 7 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
> > index 177f7ed16cf0..1c14233d179f 100644
> > --- a/drivers/gpu/drm/i915/intel_ringbuffer.c
> > +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
> > @@ -1041,13 +1041,6 @@ static int skl_init_workarounds(struct intel_engine_cs *ring)
> >                 WA_SET_BIT_MASKED(HIZ_CHICKEN,
> >                                   BDW_HIZ_POWER_COMPILER_CLOCK_GATING_DISABLE);
> >
> > -       if (INTEL_REVID(dev) == SKL_REVID_C0 ||
> > -           INTEL_REVID(dev) == SKL_REVID_D0)
> > -               /* WaBarrierPerformanceFixDisable:skl */
> > -               WA_SET_BIT_MASKED(HDC_CHICKEN0,
> > -                                 HDC_FENCE_DEST_SLM_DISABLE |
> > -                                 HDC_BARRIER_PERFORMANCE_DISABLE);
> > -
> >         if (INTEL_REVID(dev) <= SKL_REVID_D0) {
> >                 /*
> >                  *Use Force Non-Coherent whenever executing a 3D context. This
> > --
> > 2.1.0
> >
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx at lists.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/intel-gfx
> 
> 
> 
> -- 
> Rodrigo Vivi
> Blog: http://blog.vivi.eng.br
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch