linux-kernel - [PATCH v4 4/6] dma-buf: dma_fence

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Date:   Wed, 14 Sep 2022 22:13:19 +0530
From:   Arvind Yadav <Arvind.Yadav@....com>
To:     <Christian.Koenig@....com>, <andrey.grodzovsky@....com>,
        <shashank.sharma@....com>, <amaranath.somalapuram@....com>,
        <Arunpravin.PaneerSelvam@....com>, <sumit.semwal@...aro.org>,
        <gustavo@...ovan.org>, <airlied@...ux.ie>, <daniel@...ll.ch>,
        <linux-media@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <linaro-mm-sig@...ts.linaro.org>, <linux-kernel@...r.kernel.org>
CC:     Arvind Yadav <Arvind.Yadav@....com>
Subject: [PATCH v4 4/6] dma-buf: dma_fence_wait must enable signaling

dma_fence_wait() should always enable signaling even
when the fence is already signaled.

Signed-off-by: Arvind Yadav <Arvind.Yadav@....com>
---

Changes in v1..v3: This new patch was not part of previous series.

---

 drivers/dma-buf/dma-fence.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c
index 645c158b7e01..a5fbf1c1e0ea 100644
--- a/drivers/dma-buf/dma-fence.c
+++ b/drivers/dma-buf/dma-fence.c
@@ -508,6 +508,8 @@ dma_fence_wait_timeout(struct dma_fence *fence, bool intr, signed long timeout)
 
 	__dma_fence_might_wait();
 
+	dma_fence_enable_sw_signaling(fence);
+
 	trace_dma_fence_wait_start(fence);
 	if (fence->ops->wait)
 		ret = fence->ops->wait(fence, intr, timeout);
@@ -771,9 +773,6 @@ dma_fence_default_wait(struct dma_fence *fence, bool intr, signed long timeout)
 		goto out;
 	}
 
-	if (!__dma_fence_enable_signaling(fence))
-		goto out;
-
 	if (!timeout) {
 		ret = 0;
 		goto out;
-- 
2.25.1