Make sure only buffer objects that are referenced by the client can be mapped.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
return -EPERM;
vmw_user_bo = vmw_user_dma_buffer(bo);
- return (vmw_user_bo->prime.base.tfile == tfile ||
- vmw_user_bo->prime.base.shareable) ? 0 : -EPERM;
+
+ /* Check that the caller has opened the object. */
+ if (likely(ttm_ref_object_exists(tfile, &vmw_user_bo->prime.base)))
+ return 0;
+
+ DRM_ERROR("Could not grant buffer access.\n");
+ return -EPERM;
}
/**