commit a21115dd38c6cf396ba39aefd561e7903ca6149d upstream. Runtime PM auto-suspension doesn't work without pm_runtime_mark_last_busy(), add it. Cc: <stable@vger.kernel.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>