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[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>
This commit is contained in:
Patrick Gefre 2005-05-01 08:59:21 -07:00 committed by Linus Torvalds
parent 10e9206029
commit 149733d4e2
1 changed files with 4 additions and 7 deletions
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11
drivers/serial/ioc4_serial.c
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@ -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;
}