[Intel-gfx] [PATCH] drm/i915: Take rpm wakelock around debugfs/i915_gpu_info

[Chris Wilson]

On Tue, Mar 28, 2017 at 04:22:40PM +0300, Mika Kuoppala wrote:
> Chris Wilson <chris at chris-wilson.co.uk> writes:
> 
> > Capturing GPU state requires the device to be awake in order to read
> > registers. Normally, this is taken along the error handler, but for the
> > direct debugfs access, we cannot make assumptions about the current
> > device state and so either need to wake it up, or abort.
> >
> > Fixes: 5a4c6f1b1b2d ("drm/i915: The return of i915_gpu_info to debugfs")
> > Testcase: igt/pm_rpm/debugfs-read
> > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> > Cc: Mika Kuoppala <mika.kuoppala at intel.com>
> 
> doh

More yawn than doh. Who would want to look at the gpu state when it's
not doing anything and then complain it was asleep? :)

Pushed,
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre