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ttyprintk: Removed unnecessary TTY ioctl callback

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It turns-out, that TIOCCONS is completely handled in tty_io.c, so
the current local ioctl callback is of no real use.

Signed-off-by: Samo Pogačnik <samo_pogacnik@t-2.net>
Link: https://lore.kernel.org/r/1502946c760b1aae3ad9cffcf4ea3b9f37206585.camel@t-2.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Samo Pogačnik 2021-04-27 13:43:26 +02:00 committed by Greg Kroah-Hartman
parent bf3d6ab9bc
commit 2fee881121
1 changed files with 0 additions and 23 deletions
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23
drivers/char/ttyprintk.c
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@ -109,7 +109,6 @@ static int tpk_write(struct tty_struct *tty,
unsigned long flags;
int ret;
/* exclusive use of tpk_printk within this tty */
spin_lock_irqsave(&tpkp->spinlock, flags);
ret = tpk_printk(buf, count);
@ -126,27 +125,6 @@ static unsigned int tpk_write_room(struct tty_struct *tty)
return TPK_MAX_ROOM;
}
/*
* TTY operations ioctl function.
*/
static int tpk_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg)
{
struct ttyprintk_port *tpkp = tty->driver_data;
if (!tpkp)
return -EINVAL;
switch (cmd) {
/* Stop TIOCCONS */
case TIOCCONS:
return -EOPNOTSUPP;
default:
return -ENOIOCTLCMD;
}
return 0;
}
/*
* TTY operations hangup function.
*/
@ -176,7 +154,6 @@ static const struct tty_operations ttyprintk_ops = {
.close = tpk_close,
.write = tpk_write,
.write_room = tpk_write_room,
.ioctl = tpk_ioctl,
.hangup = tpk_hangup,
};