drm/amdgpu: fix init save/restore list in gfx_v8.0

commit 202e0b227b906cb80a2791f21216a55d9468d61b upstream.

set valid data to mmRLC_SRM_INDEX_CNTL_ADDRx/DATAx.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index c6fca7e7805f..a88d365be4c5 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -3947,8 +3947,12 @@ static int gfx_v8_0_init_save_restore_list(struct amdgpu_device *adev)
         temp = mmRLC_SRM_INDEX_CNTL_ADDR_0;
         data = mmRLC_SRM_INDEX_CNTL_DATA_0;
         for (i = 0; i < sizeof(unique_indices) / sizeof(int); i++) {
-                amdgpu_mm_wreg(adev, temp + i, unique_indices[i] & 0x3FFFF, false);
-                amdgpu_mm_wreg(adev, data + i, unique_indices[i] >> 20, false);
+                if (unique_indices[i] != 0) {
+                        amdgpu_mm_wreg(adev, temp + i,
+                                        unique_indices[i] & 0x3FFFF, false);
+                        amdgpu_mm_wreg(adev, data + i,
+                                        unique_indices[i] >> 20, false);
+                }
         }
         kfree(register_list_format);