[PATCH 2/7] drm/msm: Correct pm_runtime votes in recover worker

Akhil P Oommen quic_akhilpo at quicinc.com
Thu Jul 7 16:10:57 UTC 2022


In the scenario where there is one a single submit which is hung, gpu is
power collapsed when it is retired. Because of this, by the time we call
reover(), gpu state would be already clear. Fix this by correctly
managing the pm runtime votes.

Signed-off-by: Akhil P Oommen <quic_akhilpo at quicinc.com>
---

 drivers/gpu/drm/msm/msm_gpu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index eb8a666..f75ff4b 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -416,7 +416,6 @@ static void recover_worker(struct kthread_work *work)
 	/* Record the crash state */
 	pm_runtime_get_sync(&gpu->pdev->dev);
 	msm_gpu_crashstate_capture(gpu, submit, comm, cmd);
-	pm_runtime_put_sync(&gpu->pdev->dev);
 
 	kfree(cmd);
 	kfree(comm);
@@ -464,6 +463,8 @@ static void recover_worker(struct kthread_work *work)
 		}
 	}
 
+	pm_runtime_put_sync(&gpu->pdev->dev);
+
 	mutex_unlock(&gpu->lock);
 
 	msm_gpu_retire(gpu);
-- 
2.7.4



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