drm/amdgpu: fetch cu_info once at init

Fetch this info once at init and just store the results
for future requests.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
index 490464e..199f76b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
@@ -793,7 +793,6 @@
 				struct cgs_system_info *sys_info)
 {
 	CGS_FUNC_ADEV;
-	struct amdgpu_cu_info cu_info;
 
 	if (NULL == sys_info)
 		return -ENODEV;
@@ -818,8 +817,7 @@
 		sys_info->value = adev->pg_flags;
 		break;
 	case CGS_SYSTEM_INFO_GFX_CU_INFO:
-		amdgpu_asic_get_cu_info(adev, &cu_info);
-		sys_info->value = cu_info.number;
+		sys_info->value = adev->gfx.cu_info.number;
 		break;
 	default:
 		return -ENODEV;