[Intel-gfx] [PATCH 07/13] drm/i915: don't disable_fbc() if FBC is already disabled

[Ville Syrjälä]

On Thu, Nov 05, 2015 at 03:52:31PM +0100, Maarten Lankhorst wrote:
> Hey,
> 
> Op 05-11-15 om 12:29 schreef Ville Syrjälä:
> > On Wed, Nov 04, 2015 at 05:10:51PM -0200, Paulo Zanoni wrote:
> >> If FBC is disabled we will still call intel_fbc_invalidate(), and as a
> >> result we may call intel_fbc_deactivate(), which will try to touch
> >> registers.
> >>
> >> I'm pretty sure I saw this happen on a runtime suspended device, and
> > This is one of the BAT failures we have. I don't really understand why
> > we track the frontbuffer bits with FBC totally disabled, but this fix
> > seems simple enough on its own. Not sure if it applies without the
> > others, but if it doesn't I suggest trying to reorder the patchset so
> > we can put this in ASAP.
> >
> For the commit message what BAT is affected?

/me looks

pm_rpm at basic-rte at least.

-- 
Ville Syrjälä
Intel OTC