[PATCH 1/2] drm/amdgpu: fix compile error on architecture s390

[Oak Zeng]

ioremap_cache is not supported on some architecture
such as s390. Put the codes into a #ifdef to fix
some compile error reported by test robot.

Signed-off-by: Oak Zeng <Oak.Zeng at amd.com>
Reported-by: Kernel test robot <lkp at intel.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 37751e7..1091585 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1817,7 +1817,7 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
 
 	/* Change the size here instead of the init above so only lpfn is affected */
 	amdgpu_ttm_set_buffer_funcs_status(adev, false);
-#ifdef CONFIG_64BIT
+#ifdef CONFIG_X86
 	if (adev->gmc.xgmi.connected_to_cpu)
 		adev->mman.aper_base_kaddr = ioremap_cache(adev->gmc.aper_base,
 				adev->gmc.visible_vram_size);
-- 
2.7.4