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drm/i915: Check signaled state after enabling signaling

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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
This commit is contained in:
Chris Wilson 2017-06-08 12:14:02 +01:00
commit 9f90ff3928
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/i915_gem_request.c
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@ -62,7 +62,7 @@ static bool i915_fence_enable_signaling(struct dma_fence *fence)
return false;
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,