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dgnc: leave TIOC[GS]SOFTCAR to ldisc 

no point duplicating that in tty_operations ->ioctl()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2018-09-12 18:40:04 -04:00
parent a309619922
commit 88d50890b7
1 changed files with 0 additions and 24 deletions
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24
drivers/staging/dgnc/dgnc_tty.c
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@ -2080,31 +2080,7 @@ static int dgnc_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
}
switch (cmd) {
/* Here are all the standard ioctl's that we MUST implement */
case TIOCGSOFTCAR:
spin_unlock_irqrestore(&ch->ch_lock, flags);
return put_user(C_CLOCAL(tty) ? 1 : 0,
(unsigned long __user *)arg);
case TIOCSSOFTCAR:
spin_unlock_irqrestore(&ch->ch_lock, flags);
rc = get_user(arg, (unsigned long __user *)arg);
if (rc)
return rc;
spin_lock_irqsave(&ch->ch_lock, flags);
tty->termios.c_cflag = ((tty->termios.c_cflag & ~CLOCAL) |
(arg ? CLOCAL : 0));
ch_bd_ops->param(tty);
spin_unlock_irqrestore(&ch->ch_lock, flags);
return 0;
/* Here are any additional ioctl's that we want to implement */
case TCFLSH:
/*
* The linux tty driver doesn't have a flush