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mxser: remove dead code 

Old style ioctl break code can go

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox 2008-07-22 11:17:43 +01:00 committed by Linus Torvalds
parent 30252ec958
commit 8ca8b9005a
1 changed files with 0 additions and 36 deletions
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36
drivers/char/mxser.c
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@ -1464,27 +1464,6 @@ static int mxser_get_lsr_info(struct mxser_port *info,
return put_user(result, value);
}
/*
* This routine sends a break character out the serial port.
*/
static void mxser_send_break(struct mxser_port *info, int duration)
{
unsigned long flags;
if (!info->ioaddr)
return;
set_current_state(TASK_INTERRUPTIBLE);
spin_lock_irqsave(&info->slock, flags);
outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC,
info->ioaddr + UART_LCR);
spin_unlock_irqrestore(&info->slock, flags);
schedule_timeout(duration);
spin_lock_irqsave(&info->slock, flags);
outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC,
info->ioaddr + UART_LCR);
spin_unlock_irqrestore(&info->slock, flags);
}
static int mxser_tiocmget(struct tty_struct *tty, struct file *file)
{
struct mxser_port *info = tty->driver_data;
@ -1872,21 +1851,6 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
return -EIO;
switch (cmd) {
case TCSBRK: /* SVID version: non-zero arg --> no break */
retval = tty_check_change(tty);
if (retval)
return retval;
tty_wait_until_sent(tty, 0);
if (!arg)
mxser_send_break(info, HZ / 4); /* 1/4 second */
return 0;
case TCSBRKP: /* support for POSIX tcsendbreak() */
retval = tty_check_change(tty);
if (retval)
return retval;
tty_wait_until_sent(tty, 0);
mxser_send_break(info, arg ? arg * (HZ / 10) : HZ / 4);
return 0;
case TIOCGSERIAL:
lock_kernel();
retval = mxser_get_serial_info(info, argp);