Otherwise we can't be sure that we won't end up with a bounce buffer.
Signed-off-by: Christian König <[email protected]>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index d21dd2f369da..abc65633119b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -289,6 +289,10 @@ int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void
*data,
if (offset_in_page(args->addr | args->size))
return -EINVAL;
+ /* We can't do this when swiotlb is active */
+ if (adev->needs_swiotlb)
+ return -ENXIO;
+
/* reject unknown flag values */
if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY |
AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE |
--
2.17.1
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