[PATCH AUTOSEL 5.6 17/41] drm/amdgpu: drop unnecessary cancel_delayed_work_sync on PG ungate

[Sasha Levin]

From: Evan Quan <evan.q...@amd.com>

[ Upstream commit 1fe48ec08d9f2e26d893a6c05bd6c99a3490f9ef ]

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.q...@amd.com>
Reviewed-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c |  6 +-----
 drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c  | 12 +++---------
 2 files changed, 4 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c 
b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index 02702597ddeb..012df3d574bf 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -4241,11 +4241,7 @@ 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 906648fca9ef..914dbd901b98 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -4734,10 +4734,9 @@ 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);
@@ -4761,12 +4760,7 @@ 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;
-- 
2.25.1