Re: [PATCH 1/1] drm/radeon: check return value of radeon_fence_emit

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Am 24.04.2017 um 10:45 schrieb Pan Bian:
From: Pan Bian <bianpan2016@xxxxxxx>

Function radeon_fence_emit() returns -ENOMEM if there is no enough
memory. And in this case, function radeon_ring_unlock_undo() rather than
function radeon_ring_unlock_commit() should be called. However, in
function radeon_test_create_and_emit_fence(), the return value of
radeon_fence_emit() is ignored. This patch adds the check.

Signed-off-by: Pan Bian <bianpan2016@xxxxxxx>

Reviewed-by: Christian König <christian.koenig@xxxxxxx>

---
  drivers/gpu/drm/radeon/radeon_test.c | 7 ++++++-
  1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/radeon/radeon_test.c b/drivers/gpu/drm/radeon/radeon_test.c
index 79181816..623768e 100644
--- a/drivers/gpu/drm/radeon/radeon_test.c
+++ b/drivers/gpu/drm/radeon/radeon_test.c
@@ -298,7 +298,12 @@ static int radeon_test_create_and_emit_fence(struct radeon_device *rdev,
  			DRM_ERROR("Failed to lock ring A %d\n", ring->idx);
  			return r;
  		}
-		radeon_fence_emit(rdev, fence, ring->idx);
+		r = radeon_fence_emit(rdev, fence, ring->idx);
+		if (r) {
+			DRM_ERROR("Failed to emit fence\n");
+			radeon_ring_unlock_undo(rdev, ring);
+			return r;
+		}
  		radeon_ring_unlock_commit(rdev, ring, false);
  	}
  	return 0;


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