drm/amdgpu/gfx6: properly cache mc_arb_ramcfg

This was missing for gfx6.

Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
index 1351f9230fcd..c2b4e9fbc616 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
@@ -1475,7 +1475,8 @@ static void gfx_v6_0_gpu_init(struct amdgpu_device *adev)
         WREG32(mmBIF_FB_EN, BIF_FB_EN__FB_READ_EN_MASK | BIF_FB_EN__FB_WRITE_EN_MASK);
 
         mc_shared_chmap = RREG32(mmMC_SHARED_CHMAP);
-        mc_arb_ramcfg = RREG32(mmMC_ARB_RAMCFG);
+        adev->gfx.config.mc_arb_ramcfg = RREG32(mmMC_ARB_RAMCFG);
+        mc_arb_ramcfg = adev->gfx.config.mc_arb_ramcfg;
 
         adev->gfx.config.num_tile_pipes = adev->gfx.config.max_tile_pipes;
         adev->gfx.config.mem_max_burst_length_bytes = 256;