[Intel-gfx] [PATCH v2 6/8] drm/i915: sanitize rps irq enabling

[Imre Deak]

On Mon, 2014-11-10 at 13:45 +0000, Chris Wilson wrote:
> On Mon, Nov 10, 2014 at 03:41:05PM +0200, Imre Deak wrote:
> > Atm we first enable the RPS interrupts then we clear any pending ones.
> > By this we could lose an interrupt arriving after we unmasked it. This
> > may not be a problem as the caller should handle such a race, but logic
> > still calls for the opposite order. Also we can delay enabling the
> > interrupts until after all the RPS initialization is ready with the
> > following order:
> > 
> 
> 0. disable left-over RPS

Isn't enough relying on
intel_uncore_sanitize()->intel_disable_gt_powersave()?

> > 1. clear any pending RPS interrupts
> > 2. initialize RPS
> > 3. enable RPS interrupts
> -Chris
>