Commit 9f90ff39 authored Jun 08, 2017 by Chris Wilson

drm/i915: Check signaled state after enabling signaling

Setting up the irq to signal the request completion takes a finite
amount of time, during which it is possible that the request already
completed. Check afterwards, just in case, so that we can respond
immediately.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170608111405.16466-1-chris@chris-wilson.co.uk

parent c4a89526

drivers/gpu/drm/i915/i915_gem_request.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -62,7 +62,7 @@ static bool i915_fence_enable_signaling(struct dma_fence *fence)
	return false;		return false;

	intel_engine_enable_signaling(to_request(fence), true);		intel_engine_enable_signaling(to_request(fence), true);
	return true;		return !i915_fence_signaled(fence);
	}		}

	static signed long i915_fence_wait(struct dma_fence *fence,		static signed long i915_fence_wait(struct dma_fence *fence,