Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6

[android-x86/kernel.git] / drivers / serial / 8250.c

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 7c4ebe6..c3db16b 100644 (file)
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2408,6 +2408,21 @@ serial8250_set_termios(struct uart_port *port, struct ktermios *termios,
 }
 
 static void
+serial8250_set_ldisc(struct uart_port *port)
+{
+       int line = port->line;
+
+       if (line >= port->state->port.tty->driver->num)
+               return;
+
+       if (port->state->port.tty->ldisc->ops->num == N_PPS) {
+               port->flags |= UPF_HARDPPS_CD;
+               serial8250_enable_ms(port);
+       } else
+               port->flags &= ~UPF_HARDPPS_CD;
+}
+
+static void
 serial8250_pm(struct uart_port *port, unsigned int state,
              unsigned int oldstate)
 {
@@ -2628,6 +2643,7 @@ static struct uart_ops serial8250_pops = {
        .startup        = serial8250_startup,
        .shutdown       = serial8250_shutdown,
        .set_termios    = serial8250_set_termios,
+       .set_ldisc      = serial8250_set_ldisc,
        .pm             = serial8250_pm,
        .type           = serial8250_type,
        .release_port   = serial8250_release_port,