From 61ea6f5831974ebd1a57baffd7cc30600a2e26fc Mon Sep 17 00:00:00 2001
From: Rex Zhu <Rex.Zhu@amd.com>
Date: Thu, 27 Sep 2018 20:48:39 +0800
Subject: [PATCH] drm/amdgpu: Fix vce work queue was not cancelled when suspend
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The vce cancel_delayed_work_sync never be called.
driver call the function in error path.
This caused the A+A suspend hang when runtime pm enebled.
As we will visit the smu in the idle queue. this will cause
smu hang because the dgpu has been suspend, and the dgpu also
will be waked up. As the smu has been hang, so the dgpu resume
will failed.
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c | 3 ++-
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 4 ++--
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
index 0cc5190f4f36e..5f3f540738187 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
@@ -258,6 +258,8 @@ int amdgpu_vce_suspend(struct amdgpu_device *adev)
{
int i;
+ cancel_delayed_work_sync(&adev->vce.idle_work);
+
if (adev->vce.vcpu_bo == NULL)
return 0;
@@ -268,7 +270,6 @@ int amdgpu_vce_suspend(struct amdgpu_device *adev)
if (i == AMDGPU_MAX_VCE_HANDLES)
return 0;
- cancel_delayed_work_sync(&adev->vce.idle_work);
/* TODO: suspending running encoding sessions isn't supported */
return -EINVAL;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
index fd654a4406db9..400fc74bbae27 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
@@ -153,11 +153,11 @@ int amdgpu_vcn_suspend(struct amdgpu_device *adev)
unsigned size;
void *ptr;
+ cancel_delayed_work_sync(&adev->vcn.idle_work);
+
if (adev->vcn.vcpu_bo == NULL)
return 0;
- cancel_delayed_work_sync(&adev->vcn.idle_work);
-
size = amdgpu_bo_size(adev->vcn.vcpu_bo);
ptr = adev->vcn.cpu_addr;
--
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