[PATCH 4.2 106/110] drm/vmwgfx: Fix up user_dmabuf refcounting

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Thomas Hellstrom commit 54c12bc374408faddbff75dbf1a6167c19af39c4 upstream. If user space calls unreference on a user_dmabuf it will typically kill the struct ttm_base_object member which is

[PATCH 4.2 106/110] drm/vmwgfx: Fix up user_dmabuf refcounting

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Thomas Hellstrom commit 54c12bc374408faddbff75dbf1a6167c19af39c4 upstream. If user space calls unreference on a user_dmabuf it will typically kill the struct