drm/amdgpu: handle PCIe root ports with addressing limitations

amdgpu uses a need_dma32 flag to indicate to the drm core that some
allocations need to be done using GFP_DMA32, but it only checks the
device addressing capabilities to make that decision.  Unfortunately
PCIe root ports that have limited addressing exist as well.  Use the
dma_addressing_limited instead to also take those into account.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 8f8b7a350b8b..bbb4c96ed5f9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1745,7 +1745,7 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
         r = ttm_bo_device_init(&adev->mman.bdev,
                                &amdgpu_bo_driver,
                                adev->ddev->anon_inode->i_mapping,
-                               adev->need_dma32);
+                               dma_addressing_limited(adev->dev));
         if (r) {
                 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
                 return r;