[PATCH 2/2] drm/amdgpu/vcn: adjust workload profile handling

[Alex Deucher]

No need to make the workload profile setup dependent
on the results of cancelling the delayed work thread.
We have all of the necessary checking in place for the
workload profile reference counting, so separate the
two.  As it is now, we can theoretically end up with
the call from begin_use happening while the worker
thread is executing which would result in the profile
not getting set for that submission.  It should not
affect the reference counting.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 20 ++++++++++----------
 drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c   | 20 ++++++++++----------
 2 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
index 6b410e601bb65..0ab74b46bcb0a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
@@ -460,17 +460,17 @@ void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring)
 
 	atomic_inc(&vcn_inst->total_submission_cnt);
 
-	if (!cancel_delayed_work_sync(&vcn_inst->idle_work)) {
-		mutex_lock(&adev->vcn.workload_profile_mutex);
-		if (!adev->vcn.workload_profile_active) {
-			r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO,
-							    true);
-			if (r)
-				dev_warn(adev->dev, "(%d) failed to switch to video power profile mode\n", r);
-			adev->vcn.workload_profile_active = true;
-		}
-		mutex_unlock(&adev->vcn.workload_profile_mutex);
+	cancel_delayed_work_sync(&vcn_inst->idle_work);
+
+	mutex_lock(&adev->vcn.workload_profile_mutex);
+	if (!adev->vcn.workload_profile_active) {
+		r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO,
+						    true);
+		if (r)
+			dev_warn(adev->dev, "(%d) failed to switch to video power profile mode\n", r);
+		adev->vcn.workload_profile_active = true;
 	}
+	mutex_unlock(&adev->vcn.workload_profile_mutex);
 
 	mutex_lock(&vcn_inst->vcn_pg_lock);
 	vcn_inst->set_pg_state(vcn_inst, AMD_PG_STATE_UNGATE);
diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c b/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c
index b4b8091980ad5..8c7c50f34fce0 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c
@@ -169,17 +169,17 @@ static void vcn_v2_5_ring_begin_use(struct amdgpu_ring *ring)
 
 	atomic_inc(&adev->vcn.inst[0].total_submission_cnt);
 
-	if (!cancel_delayed_work_sync(&adev->vcn.inst[0].idle_work)) {
-		mutex_lock(&adev->vcn.workload_profile_mutex);
-		if (!adev->vcn.workload_profile_active) {
-			r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO,
-							    true);
-			if (r)
-				dev_warn(adev->dev, "(%d) failed to switch to video power profile mode\n", r);
-			adev->vcn.workload_profile_active = true;
-		}
-		mutex_unlock(&adev->vcn.workload_profile_mutex);
+	cancel_delayed_work_sync(&adev->vcn.inst[0].idle_work);
+
+	mutex_lock(&adev->vcn.workload_profile_mutex);
+	if (!adev->vcn.workload_profile_active) {
+		r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO,
+						    true);
+		if (r)
+			dev_warn(adev->dev, "(%d) failed to switch to video power profile mode\n", r);
+		adev->vcn.workload_profile_active = true;
 	}
+	mutex_unlock(&adev->vcn.workload_profile_mutex);
 
 	mutex_lock(&adev->vcn.inst[0].vcn_pg_lock);
 	amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VCN,
-- 
2.48.1