[PATCH] Altix ioc4 serial - set hfc from ioctl

Allow hardware flow control to be set from an ioctl.

Signed-off-by: Patrick Gefre <pfg@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/serial/ioc4_serial.c b/drivers/serial/ioc4_serial.c
index d054f1265701cfa696c966110bf2c6e5bca4d20d..f94d2e712cad733479f4723f197c89d750ba633d 100644 (file)
--- a/drivers/serial/ioc4_serial.c
+++ b/drivers/serial/ioc4_serial.c
@@ -1765,8 +1765,11 @@ ioc4_change_speed(struct uart_port *the_port,
                the_port->ignore_status_mask &= ~N_DATA_READY;
        }
 
-       if (cflag & CRTSCTS)
+       if (cflag & CRTSCTS) {
                info->flags |= ASYNC_CTS_FLOW;
+               port->ip_sscr |= IOC4_SSCR_HFC_EN;
+               writel(port->ip_sscr, &port->ip_serial_regs->sscr);
+       }
        else
                info->flags &= ~ASYNC_CTS_FLOW;
 
@@ -1825,12 +1828,6 @@ static inline int ic4_startup_local(struct uart_port *the_port)
        /* set the speed of the serial port */
        ioc4_change_speed(the_port, info->tty->termios, (struct termios *)0);
 
-       /* enable hardware flow control - after ioc4_change_speed because
-        * ASYNC_CTS_FLOW is set there */
-       if (info->flags & ASYNC_CTS_FLOW) {
-               port->ip_sscr |= IOC4_SSCR_HFC_EN;
-               writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-       }
        info->flags |= UIF_INITIALIZED;
        return 0;
 }