Re: [PATCH] drm/amdgpu/gfx6: properly cache mc_arb_ramcfg

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On Fri, Jun 02, 2017 at 04:33:31PM -0400, Alex Deucher wrote:
> This was missing for gfx6.
> 
> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx

Acked-by: Huang Rui <ray.huang@xxxxxxx>

> ---
>  drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> 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
> --- 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;
> -- 
> 2.5.5
> 
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