If the system hasn't entered GFXOFF when suspend starts it can cause
hangs accessing GC and RLC during the suspend stage.
Cc: <stable@xxxxxxxxxxxxxxx> # 6.1.y: 5095d5418193 ("drm/amd: Evict resources during PM ops prepare() callback")
Cc: <stable@xxxxxxxxxxxxxxx> # 6.1.y: cb11ca3233aa ("drm/amd: Add concept of running prepare_suspend() sequence for IP blocks")
Cc: <stable@xxxxxxxxxxxxxxx> # 6.1.y: 2ceec37b0e3d ("drm/amd: Add missing kernel doc for prepare_suspend()")
Cc: <stable@xxxxxxxxxxxxxxx> # 6.1.y: 3a9626c816db ("drm/amd: Stop evicting resources on APUs in suspend")
Cc: <stable@xxxxxxxxxxxxxxx> # 6.6.y: 5095d5418193 ("drm/amd: Evict resources during PM ops prepare() callback")
Cc: <stable@xxxxxxxxxxxxxxx> # 6.6.y: cb11ca3233aa ("drm/amd: Add concept of running prepare_suspend() sequence for IP blocks")
Cc: <stable@xxxxxxxxxxxxxxx> # 6.6.y: 2ceec37b0e3d ("drm/amd: Add missing kernel doc for prepare_suspend()")
Cc: <stable@xxxxxxxxxxxxxxx> # 6.6.y: 3a9626c816db ("drm/amd: Stop evicting resources on APUs in suspend")
Cc: <stable@xxxxxxxxxxxxxxx> # 6.1+
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3132
Fixes: ab4750332dbe ("drm/amdgpu/sdma5.2: add begin/end_use ring callbacks")
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index f771b2042a43..12dc71a6b5db 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4542,6 +4542,8 @@ int amdgpu_device_prepare(struct drm_device *dev)
if (r)
goto unprepare;
+ flush_delayed_work(&adev->gfx.gfx_off_delay_work);
+
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.valid)
continue;
