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authorPatrick Gefre <pfg@sgi.com>2005-05-01 08:59:21 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-01 08:59:21 -0700
commit149733d4e274ce1add3399cabdb243116ebfdf79 (patch)
tree2e34d1ea62154b4e37f7b69a35c66edbfe36257f
parent10e92060295ded7b8feac1ee57bb2135ea9ac207 (diff)
[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>
-rw-r--r--drivers/serial/ioc4_serial.c11
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/serial/ioc4_serial.c b/drivers/serial/ioc4_serial.c
index d054f1265701..f94d2e712cad 100644
--- 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;
}

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