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

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
index 1351f92..c2b4e9f 100644 (file)
--- 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;