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isdn_tty: TCSBRK{,P} won't reach ->ioctl() 

kill the long-dead code - it's been unreachable since 2008.  Redundant, as
well - generic will do exact same thing, since ->break_ctl is NULL here...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2018-09-12 17:54:22 -04:00
parent 864e880de5
commit e67504c595
1 changed files with 0 additions and 19 deletions
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19
drivers/isdn/i4l/isdn_tty.c
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@ -1412,31 +1412,12 @@ static int
isdn_tty_ioctl(struct tty_struct *tty, uint cmd, ulong arg)
{
modem_info *info = (modem_info *) tty->driver_data;
int retval;
if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_ioctl"))
return -ENODEV;
if (tty_io_error(tty))
return -EIO;
switch (cmd) {
case TCSBRK: /* SVID version: non-zero arg --> no break */
#ifdef ISDN_DEBUG_MODEM_IOCTL
printk(KERN_DEBUG "ttyI%d ioctl TCSBRK\n", info->line);
#endif
retval = tty_check_change(tty);
if (retval)
return retval;
tty_wait_until_sent(tty, 0);
return 0;
case TCSBRKP: /* support for POSIX tcsendbreak() */
#ifdef ISDN_DEBUG_MODEM_IOCTL
printk(KERN_DEBUG "ttyI%d ioctl TCSBRKP\n", info->line);
#endif
retval = tty_check_change(tty);
if (retval)
return retval;
tty_wait_until_sent(tty, 0);
return 0;
case TIOCSERGETLSR: /* Get line status register */
#ifdef ISDN_DEBUG_MODEM_IOCTL
printk(KERN_DEBUG "ttyI%d ioctl TIOCSERGETLSR\n", info->line);