[Intel-gfx] [PATCH 1/5] drm/i915/guc: Merge communication_stop and communication_disable

[Michal Wajdeczko]

On Tue, 10 Dec 2019 22:09:15 +0100, Daniele Ceraolo Spurio  
<daniele.ceraolospurio at intel.com> wrote:

> The only difference from the GuC POV between guc_communication_stop and
> guc_communication_disable is that the former can be called after GuC
> has been reset. Instead of having two separate paths, we can just skip
> the call into GuC in the disabling path and re-use that.
>
> Note that by using the disable() path instead of the stop() one there
> are two additional changes in SW side for the stop path:
>
> - interrupts are now disabled before disabling the CT, which is ok
>   because we do not want interrupts with CT disabled;
> - guc_get_mmio_msg() is called in the stop case as well, which is ok
>   because if there are errors before the reset we do want to record
>   them.
>
> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
> Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
> Cc: John Harrison <John.C.Harrison at Intel.com>
> Cc: Matthew Brost <matthew.brost at intel.com>
> ---

Reviewed-by: Michal Wajdeczko <michal.wajdeczko at intel.com>