drm/amdgpu: allow write access to mapped userptrs

With the updated MMU notifier we should also be able to
handle the writeback case correctly.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 3 insertions, 5 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index 7f6b4d9841e5..5d280f6ae5bf 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -258,12 +258,10 @@ int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data,
             AMDGPU_GEM_USERPTR_REGISTER))
                 return -EINVAL;
 
-        if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) && (
-             !(args->flags & AMDGPU_GEM_USERPTR_ANONONLY) ||
-             !(args->flags & AMDGPU_GEM_USERPTR_REGISTER))) {
+        if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) &&
+             !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) {
 
-                /* if we want to write to it we must require anonymous
-                   memory and install a MMU notifier */
+                /* if we want to write to it we must install a MMU notifier */
                 return -EACCES;
         }