[04/11] drm/i915: Tidy awaiting on dma-fences
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Message ID 20200508081630.13882-4-chris@chris-wilson.co.uk
State New
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Series
  • [01/11] drm/i915: Ignore submit-fences on the same timeline
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Commit Message

Chris Wilson May 8, 2020, 8:16 a.m. UTC
Just tidy up the return handling for completed dma-fences. While it may
return errors for invalid fence, we already know that we have a good
fence and the only error will be an already signaled fence.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_sw_fence.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

Patch
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diff --git a/drivers/gpu/drm/i915/i915_sw_fence.c b/drivers/gpu/drm/i915/i915_sw_fence.c
index 7daf81f55c90..295b9829e2da 100644
--- a/drivers/gpu/drm/i915/i915_sw_fence.c
+++ b/drivers/gpu/drm/i915/i915_sw_fence.c
@@ -546,13 +546,11 @@  int __i915_sw_fence_await_dma_fence(struct i915_sw_fence *fence,
 	cb->fence = fence;
 	i915_sw_fence_await(fence);
 
-	ret = dma_fence_add_callback(dma, &cb->base, __dma_i915_sw_fence_wake);
-	if (ret == 0) {
-		ret = 1;
-	} else {
+	ret = 1;
+	if (dma_fence_add_callback(dma, &cb->base, __dma_i915_sw_fence_wake)) {
+		/* fence already signaled */
 		__dma_i915_sw_fence_wake(dma, &cb->base);
-		if (ret == -ENOENT) /* fence already signaled */
-			ret = 0;
+		ret = 0;
 	}
 
 	return ret;