[Intel-gfx] [PATCH 11/15] drm/i915: Clear engine irq posted following a reset

[Michel Thierry]

On 17/07/17 02:11, Chris Wilson wrote:
> When the GPU is reset, we want to discard all pending notifications as
> either we have manually completed them, or they are no longer
> applicable. Make sure we do reset the engine->irq_posted prior to
> re-enabling the engine (e.g. the interrupt tasklets) in
> i915_gem_reset_finish_engine().
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> ---
>   drivers/gpu/drm/i915/i915_gem.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> index 5517373c1bea..19511020f06e 100644
> --- a/drivers/gpu/drm/i915/i915_gem.c
> +++ b/drivers/gpu/drm/i915/i915_gem.c
> @@ -3027,6 +3027,8 @@ static bool i915_gem_reset_request(struct drm_i915_gem_request *request)
>   void i915_gem_reset_engine(struct intel_engine_cs *engine,
>   			   struct drm_i915_gem_request *request)
>   {
> +	engine->irq_posted = 0;
> +
>   	if (request && i915_gem_reset_request(request)) {
>   		DRM_DEBUG_DRIVER("resetting %s to restart from tail of request 0x%x\n",
>   				 engine->name, request->global_seqno);
> 

Reviewed-by: Michel Thierry <michel.thierry at intel.com>