[Intel-gfx] [PATCH] drm/i915: Acquire intel_runtime_pm for HD-Audio registers

[Marius Vlad]

Did try when you submitted the patch...but can't seem to replicate with
latest nightly on other SKLs, and currently do not have access on
the machine that caused it.

On Tue, Jul 12, 2016 at 02:16:50PM +0100, Chris Wilson wrote:
> On Tue, Jul 12, 2016 at 04:10:22PM +0300, Mika Kuoppala wrote:
> > Chris Wilson <chris at chris-wilson.co.uk> writes:
> > 
> > > On Haswell/Broadwell, the HD-Audio block is inside the HDMI/display
> > > power well and so the sna-hda audio codec acquires the display power
> > > well while it is operational. However, Skylake separates the powerwells
> > > again, and so we must remember to acquire the rpm wakeref for ourselves
> > > whilst tweaking the registers.
> > >
> > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96214
> > > Fixes: 03b135cebc47 "ALSA: hda - remove dependency on i915 power well for SKL")
> > > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> > 
> > Reviewed-by: Mika Kuoppala <mika.kuoppala at intel.com>
> > 
> > > Cc: Libin Yang <libin.yang at intel.com>
> > > Cc: Takashi Iwai <tiwai at suse.de>
> > > Cc: Marius Vlad <marius.c.vlad at intel.com>
> 
> Marius, could you provide a tested by?
> -Chris
> 
> -- 
> Chris Wilson, Intel Open Source Technology Centre
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