Reviewed-by: Kevin Wang <kevin1.w...@amd.com>
Best Regards,
Kevin
________________________________
From: Quan, Evan
Sent: Tuesday, July 16, 2019 11:01:43 AM
To: Quan, Evan; amd-gfx@lists.freedesktop.org
Cc: Wang, Kevin(Yang)
Subject: RE: [PATCH] drm/amd/powerplay: fix deadlock around smu_handle_task V2
Ping..
> -----Original Message-----
> From: Evan Quan <evan.q...@amd.com>
> Sent: Friday, July 12, 2019 1:51 PM
> To: amd-gfx@lists.freedesktop.org
> Cc: Wang, Kevin(Yang) <kevin1.w...@amd.com>; Quan, Evan
> <evan.q...@amd.com>
> Subject: [PATCH] drm/amd/powerplay: fix deadlock around
> smu_handle_task V2
>
> As the lock was already held on the entrance to smu_handle_task.
>
> - V2: lock in small granularity
>
> Change-Id: I5388aa917ef0e330974e26c59db42d1354b6a865
> Signed-off-by: Evan Quan <evan.q...@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> index 961f4e54ed18..eb255a6bd3a9 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> @@ -3049,11 +3049,9 @@ void amdgpu_pm_compute_clocks(struct
> amdgpu_device *adev)
> if (is_support_sw_smu(adev)) {
> struct smu_context *smu = &adev->smu;
> struct smu_dpm_context *smu_dpm = &adev-
> >smu.smu_dpm;
> - mutex_lock(&(smu->mutex));
> smu_handle_task(&adev->smu,
> smu_dpm->dpm_level,
> AMD_PP_TASK_DISPLAY_CONFIG_CHANGE);
> - mutex_unlock(&(smu->mutex));
> } else {
> if (adev->powerplay.pp_funcs->dispatch_tasks) {
> if (!amdgpu_device_has_dc_support(adev)) {
> --
> 2.21.0
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