From: Likun Gao <likun....@amd.com>

MGCG should RLC enter into safe mode first.

Signed-off-by: Likun Gao <likun....@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c 
b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 7556716..968b127 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -3587,6 +3587,8 @@ static void 
gfx_v9_0_update_medium_grain_clock_gating(struct amdgpu_device *adev
 {
        uint32_t data, def;
 
+       amdgpu_gfx_rlc_enter_safe_mode(adev);
+
        /* It is disabled by HW by default */
        if (enable && (adev->cg_flags & AMD_CG_SUPPORT_GFX_MGCG)) {
                /* 1 - RLC_CGTT_MGCG_OVERRIDE */
@@ -3651,6 +3653,8 @@ static void 
gfx_v9_0_update_medium_grain_clock_gating(struct amdgpu_device *adev
                        WREG32_SOC15(GC, 0, mmCP_MEM_SLP_CNTL, data);
                }
        }
+
+       amdgpu_gfx_rlc_exit_safe_mode(adev);
 }
 
 static void gfx_v9_0_update_3d_clock_gating(struct amdgpu_device *adev,
-- 
2.7.4

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