diff options
Diffstat (limited to 'drivers/char/mxser.c')
| -rw-r--r-- | drivers/char/mxser.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c index eafbbcf355e7..ff5ff6188809 100644 --- a/drivers/char/mxser.c +++ b/drivers/char/mxser.c @@ -547,6 +547,17 @@ static int mxser_carrier_raised(struct tty_port *port) return (inb(mp->ioaddr + UART_MSR) & UART_MSR_DCD)?1:0; } +static void mxser_raise_dtr_rts(struct tty_port *port) +{ + struct mxser_port *mp = container_of(port, struct mxser_port, port); + unsigned long flags; + + spin_lock_irqsave(&mp->slock, flags); + outb(inb(mp->ioaddr + UART_MCR) | + UART_MCR_DTR | UART_MCR_RTS, mp->ioaddr + UART_MCR); + spin_unlock_irqrestore(&mp->slock, flags); +} + static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp, struct mxser_port *mp) { @@ -586,10 +597,7 @@ static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp, spin_unlock_irqrestore(&mp->slock, flags); port->blocked_open++; while (1) { - spin_lock_irqsave(&mp->slock, flags); - outb(inb(mp->ioaddr + UART_MCR) | - UART_MCR_DTR | UART_MCR_RTS, mp->ioaddr + UART_MCR); - spin_unlock_irqrestore(&mp->slock, flags); + tty_port_raise_dtr_rts(port); set_current_state(TASK_INTERRUPTIBLE); if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) { if (port->flags & ASYNC_HUP_NOTIFY) @@ -2458,6 +2466,7 @@ static const struct tty_operations mxser_ops = { struct tty_port_operations mxser_port_ops = { .carrier_raised = mxser_carrier_raised, + .raise_dtr_rts = mxser_raise_dtr_rts, }; /* |