drm/amdgpu: drop unnecessary cancel_delayed_work_sync on PG ungate

As this is already properly handled in amdgpu_gfx_off_ctrl(). In fact,
this unnecessary cancel_delayed_work_sync may leave a small time window
for race condition and is dangerous.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index 0c98f70..d35ac74 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -4353,11 +4353,7 @@ static int gfx_v10_0_set_powergating_state(void *handle,
        switch (adev->asic_type) {
        case CHIP_NAVI10:
        case CHIP_NAVI14:
-               if (!enable) {
-                       amdgpu_gfx_off_ctrl(adev, false);
-                       cancel_delayed_work_sync(&adev->gfx.gfx_off_delay_work);
-               } else
-                       amdgpu_gfx_off_ctrl(adev, true);
+               amdgpu_gfx_off_ctrl(adev, enable);
                break;
        default:
                break;

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 0c39048..0127f1c 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -5025,10 +5025,9 @@ static int gfx_v9_0_set_powergating_state(void *handle,
        switch (adev->asic_type) {
        case CHIP_RAVEN:
        case CHIP_RENOIR:
-               if (!enable) {
+               if (!enable)
                        amdgpu_gfx_off_ctrl(adev, false);
-                       cancel_delayed_work_sync(&adev->gfx.gfx_off_delay_work);
-               }
+
                if (adev->pg_flags & AMD_PG_SUPPORT_RLC_SMU_HS) {
                        gfx_v9_0_enable_sck_slow_down_on_power_up(adev, true);
                        gfx_v9_0_enable_sck_slow_down_on_power_down(adev, true);
@@ -5052,12 +5051,7 @@ static int gfx_v9_0_set_powergating_state(void *handle,
                        amdgpu_gfx_off_ctrl(adev, true);
                break;
        case CHIP_VEGA12:
-               if (!enable) {
-                       amdgpu_gfx_off_ctrl(adev, false);
-                       cancel_delayed_work_sync(&adev->gfx.gfx_off_delay_work);
-               } else {
-                       amdgpu_gfx_off_ctrl(adev, true);
-               }
+               amdgpu_gfx_off_ctrl(adev, enable);
                break;
        default:
                break;