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path: root/drivers/usb/serial/mct_u232.c
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Diffstat (limited to 'drivers/usb/serial/mct_u232.c')
-rw-r--r--drivers/usb/serial/mct_u232.c14
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index ad4998bbf16f..cd009cb280a5 100644
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -777,20 +777,19 @@ static void mct_u232_throttle(struct tty_struct *tty)
777{ 777{
778 struct usb_serial_port *port = tty->driver_data; 778 struct usb_serial_port *port = tty->driver_data;
779 struct mct_u232_private *priv = usb_get_serial_port_data(port); 779 struct mct_u232_private *priv = usb_get_serial_port_data(port);
780 unsigned long flags;
781 unsigned int control_state; 780 unsigned int control_state;
782 781
783 dbg("%s - port %d", __func__, port->number); 782 dbg("%s - port %d", __func__, port->number);
784 783
785 spin_lock_irqsave(&priv->lock, flags); 784 spin_lock_irq(&priv->lock);
786 priv->rx_flags |= THROTTLED; 785 priv->rx_flags |= THROTTLED;
787 if (C_CRTSCTS(tty)) { 786 if (C_CRTSCTS(tty)) {
788 priv->control_state &= ~TIOCM_RTS; 787 priv->control_state &= ~TIOCM_RTS;
789 control_state = priv->control_state; 788 control_state = priv->control_state;
790 spin_unlock_irqrestore(&priv->lock, flags); 789 spin_unlock_irq(&priv->lock);
791 (void) mct_u232_set_modem_ctrl(port->serial, control_state); 790 (void) mct_u232_set_modem_ctrl(port->serial, control_state);
792 } else { 791 } else {
793 spin_unlock_irqrestore(&priv->lock, flags); 792 spin_unlock_irq(&priv->lock);
794 } 793 }
795} 794}
796 795
@@ -799,20 +798,19 @@ static void mct_u232_unthrottle(struct tty_struct *tty)
799{ 798{
800 struct usb_serial_port *port = tty->driver_data; 799 struct usb_serial_port *port = tty->driver_data;
801 struct mct_u232_private *priv = usb_get_serial_port_data(port); 800 struct mct_u232_private *priv = usb_get_serial_port_data(port);
802 unsigned long flags;
803 unsigned int control_state; 801 unsigned int control_state;
804 802
805 dbg("%s - port %d", __func__, port->number); 803 dbg("%s - port %d", __func__, port->number);
806 804
807 spin_lock_irqsave(&priv->lock, flags); 805 spin_lock_irq(&priv->lock);
808 if ((priv->rx_flags & THROTTLED) && C_CRTSCTS(tty)) { 806 if ((priv->rx_flags & THROTTLED) && C_CRTSCTS(tty)) {
809 priv->rx_flags &= ~THROTTLED; 807 priv->rx_flags &= ~THROTTLED;
810 priv->control_state |= TIOCM_RTS; 808 priv->control_state |= TIOCM_RTS;
811 control_state = priv->control_state; 809 control_state = priv->control_state;
812 spin_unlock_irqrestore(&priv->lock, flags); 810 spin_unlock_irq(&priv->lock);
813 (void) mct_u232_set_modem_ctrl(port->serial, control_state); 811 (void) mct_u232_set_modem_ctrl(port->serial, control_state);
814 } else { 812 } else {
815 spin_unlock_irqrestore(&priv->lock, flags); 813 spin_unlock_irq(&priv->lock);
816 } 814 }
817} 815}
818 816