[PATCH 1/2] drm/amdgpu: fix mask in GART location calculation

[James Zhu]

This series are

Acked-by: James Zhu <James.Zhu at amd.com>
Tested-by: James Zhu <James.Zhu at amd.com>


On 2018-09-14 06:57 AM, Christian König wrote:
> We need to mask the lower bits not the upper one.
>
> Fixes: ec210e3226dc0 drm/amdgpu: put GART away from VRAM v2
>
> Signed-off-by: Christian König <christian.koenig at amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
> index ae4467113240..9a5b252784a1 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
> @@ -166,7 +166,7 @@ void amdgpu_gmc_gart_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc)
>   	else
>   		mc->gart_start = mc->mc_mask - mc->gart_size + 1;
>   
> -	mc->gart_start &= four_gb - 1;
> +	mc->gart_start &= ~(four_gb - 1);
>   	mc->gart_end = mc->gart_start + mc->gart_size - 1;
>   	dev_info(adev->dev, "GART: %lluM 0x%016llX - 0x%016llX\n",
>   			mc->gart_size >> 20, mc->gart_start, mc->gart_end);