A recent commit:
commit 
d6fa5a4e7ab605370fd6c982782f84ef2e6660e7
Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
    serial: sh-sci: prepare for conversion to the shdma base library
is not sufficient to update the sh-sci driver to the new shdma driver
layout. This caused compilation breakage, when CONFIG_SERIAL_SH_SCI_DMA
is enabled. This patch trivially fixes the problem by updating the DMA
descriptor manipulation code.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
 
 
 #include <linux/module.h>
 #include <linux/errno.h>
+#include <linux/sh_dma.h>
 #include <linux/timer.h>
 #include <linux/interrupt.h>
 #include <linux/tty.h>
                /* Handle incomplete DMA receive */
                struct tty_struct *tty = port->state->port.tty;
                struct dma_chan *chan = s->chan_rx;
-               struct sh_desc *sh_desc = container_of(desc, struct sh_desc,
-                                                      async_tx);
+               struct shdma_desc *sh_desc = container_of(desc,
+                                       struct shdma_desc, async_tx);
                unsigned long flags;
                int count;