diff options
Diffstat (limited to 'drivers/tty/mxser.c')
| -rw-r--r-- | drivers/tty/mxser.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index e5f8d08de8fd..5789c4343f10 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -1553,15 +1553,17 @@ static int mxser_rs_break(struct tty_struct *tty, int break_state) { struct mxser_port *info = tty->driver_data; unsigned long flags; + u8 lcr; spin_lock_irqsave(&info->slock, flags); + lcr = inb(info->ioaddr + UART_LCR); if (break_state == -1) - outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC, - info->ioaddr + UART_LCR); + lcr |= UART_LCR_SBC; else - outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC, - info->ioaddr + UART_LCR); + lcr &= ~UART_LCR_SBC; + outb(lcr, info->ioaddr + UART_LCR); spin_unlock_irqrestore(&info->slock, flags); + return 0; } |