From 9f90ff392877581e2c9b54a2d5ecfd1f50d1f170 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 8 Jun 2017 12:14:02 +0100 Subject: [PATCH] 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 Cc: Joonas Lahtinen Cc: Tvrtko Ursulin Reviewed-by: Mika Kuoppala Reviewed-by: Joonas Lahtinen Link: http://patchwork.freedesktop.org/patch/msgid/20170608111405.16466-1-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_gem_request.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_gem_request.c b/drivers/gpu/drm/i915/i915_gem_request.c index 0d1e0d8..46d869e 100644 --- a/drivers/gpu/drm/i915/i915_gem_request.c +++ b/drivers/gpu/drm/i915/i915_gem_request.c @@ -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, -- 2.7.4