serial: sh-sci: Fix fifo stall on SH7760/SH7780/SH7785 SCIF.

There was an off-by-1 in the SCRFDR calculation that caused writes over
128-bytes to hang in the FIFO. Fix it up.

Signed-off-by: Yutaro Ebihara <ebiharaml@si-linux.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Yutaro Ebihara 2008-03-11 13:58:50 +09:00 committed by Paul Mundt
parent 2f44bbb495
commit cae167d3d7

View File

@ -414,12 +414,12 @@ static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
defined(CONFIG_CPU_SUBTYPE_SH7785)
static inline int scif_txroom(struct uart_port *port)
{
return SCIF_TXROOM_MAX - (sci_in(port, SCTFDR) & 0x7f);
return SCIF_TXROOM_MAX - (sci_in(port, SCTFDR) & 0xff);
}
static inline int scif_rxroom(struct uart_port *port)
{
return sci_in(port, SCRFDR) & 0x7f;
return sci_in(port, SCRFDR) & 0xff;
}
#else
static inline int scif_txroom(struct uart_port *port)