The upstream 4.9-rc1 kernel has been released. It includes the patch I mentioned in comment #6 as commit 0eec880966e77bdbee0112989a2be67d92e39929. This patch is also in the upstream 4.4.24 kernel as commit 9c5d43504bbbb20bc1f9fa4f7cc79b4e35860c48.
The upstream 4.9-rc1 kernel has been released. It includes the patch I mentioned in comment #6 as commit 0eec880966e77bd bee0112989a2be6 7d92e39929. This patch is also in the upstream 4.4.24 kernel as commit 9c5d43504bbbb20 bc1f9fa4f7cc79b 4e35860c48.