[PATCH] drm/amdgpu: Check if AID is active before access

[Lijo Lazar]

Access XGMI registers only if AID is active.

Signed-off-by: Lijo Lazar <lijo.la...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
index 1823ce74b990..10e42b0ff7a2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
@@ -336,6 +336,10 @@ static u32 xgmi_v6_4_get_link_status(struct amdgpu_device 
*adev, int global_link
        }
 
        i = global_link_num / n;
+
+       if (!(adev->aid_mask & BIT(i)))
+               return U32_MAX;
+
        addr += adev->asic_funcs->encode_ext_smn_addressing(i);
 
        return RREG32_PCIE_EXT(addr);
-- 
2.49.0