Commits
Heikki Krogerus committed a3b0397fdf1
serial: 8250_dma: TX optimisation Remove one useless wakeup, and do not use DMA with zero byte transfers. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>