[PATCH 2/3] drm/i915: Set adjustment to zero on Up/Down interrupts if freq is already max/min

[Kamble, Sagar A]

On 1/17/2017 4:49 PM, Chris Wilson wrote:
> On Tue, Jan 17, 2017 at 04:09:27PM +0530, Sagar Arun Kamble wrote:
>> From: "sagar.a.kamble at intel.com" <sagar.a.kamble at intel.com>
> When we reach the user's RPS limits, stop requesting an adjustment. Even
> though we will clamp the requested frequency later, we rely on interrupt
> masking to disable further adjustments in the same direction. Even
> though it is unlikely (one scenario is a bug in the driver, another is
> careful manipulation through the uAPI) if we keep exponentially
> increasing the adjustment value, it will wrap and cause a negative
> adjustment.
>   
>> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
>> Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
> Care to give a reviewed-by?
> -Chris
Sorry. I will change this.
>