[Intel-gfx] [PATCH v3 2/7] drm/i915: add assert_rpm_wakelock_held helper

[Chris Wilson]

On Thu, Nov 12, 2015 at 06:40:16PM +0200, Imre Deak wrote:
> As a preparation for follow-up patches add a new helper that checks
> whether we hold an RPM reference, since this is what we want most of
> the cases. Atm this helper will only check for the HW suspended state, a
> follow-up patch will do the actual change to check the refcount instead.
> One exception is the forcewake release timer function, where it's
> guaranteed that the HW is on even though the RPM refcount drops to zero.
> This guarantee is provided by flushing the timer in the runtime suspend
> handler. So leave the assert_device_not_suspended check in place there.
> 
> Also rename assert_device_suspended for consistency and export these
> helpers as a preparation for the follow-up patches.
> 
> No functional change.
> 
> v3:
> - change the assert warning message to be more meaningful (Chris)
> 
> Signed-off-by: Imre Deak <imre.deak at intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre