diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2018-09-12 18:32:47 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2018-10-13 00:50:47 -0400 |
| commit | b413f00ab1a99ccb239fc5afd4b8e0c7ada6c9db (patch) | |
| tree | 130462eeb245f8a22909a3a3020e1eb534c65983 /drivers | |
| parent | 6bbf265892241f540d3465c074c04a39b7f127ec (diff) | |
| download | linux-b413f00ab1a99ccb239fc5afd4b8e0c7ada6c9db.tar.bz2 | |
dgnc: break-related ioctls won't reach ->ioctl()
kill the dead code, especially since ->break_ctl() will do the
right thing anyway.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/dgnc/dgnc_tty.c | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/drivers/staging/dgnc/dgnc_tty.c b/drivers/staging/dgnc/dgnc_tty.c index 9accaa705820..040af55e9e68 100644 --- a/drivers/staging/dgnc/dgnc_tty.c +++ b/drivers/staging/dgnc/dgnc_tty.c @@ -2081,81 +2081,6 @@ 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 TCSBRK: - /* - * TCSBRK is SVID version: non-zero arg --> no break - * this behaviour is exploited by tcdrain(). - * - * According to POSIX.1 spec (7.2.2.1.2) breaks should be - * between 0.25 and 0.5 seconds so we'll ask for something - * in the middle: 0.375 seconds. - */ - rc = tty_check_change(tty); - spin_unlock_irqrestore(&ch->ch_lock, flags); - if (rc) - return rc; - - rc = ch_bd_ops->drain(tty, 0); - if (rc) - return -EINTR; - - spin_lock_irqsave(&ch->ch_lock, flags); - - if (((cmd == TCSBRK) && (!arg)) || (cmd == TCSBRKP)) - ch_bd_ops->send_break(ch, 250); - - spin_unlock_irqrestore(&ch->ch_lock, flags); - - return 0; - - case TCSBRKP: - /* - * support for POSIX tcsendbreak() - * According to POSIX.1 spec (7.2.2.1.2) breaks should be - * between 0.25 and 0.5 seconds so we'll ask for something - * in the middle: 0.375 seconds. - */ - rc = tty_check_change(tty); - spin_unlock_irqrestore(&ch->ch_lock, flags); - if (rc) - return rc; - - rc = ch_bd_ops->drain(tty, 0); - if (rc) - return -EINTR; - - spin_lock_irqsave(&ch->ch_lock, flags); - - ch_bd_ops->send_break(ch, 250); - - spin_unlock_irqrestore(&ch->ch_lock, flags); - - return 0; - - case TIOCSBRK: - rc = tty_check_change(tty); - spin_unlock_irqrestore(&ch->ch_lock, flags); - if (rc) - return rc; - - rc = ch_bd_ops->drain(tty, 0); - if (rc) - return -EINTR; - - spin_lock_irqsave(&ch->ch_lock, flags); - - ch_bd_ops->send_break(ch, 250); - - spin_unlock_irqrestore(&ch->ch_lock, flags); - - return 0; - - case TIOCCBRK: - /* Do Nothing */ - spin_unlock_irqrestore(&ch->ch_lock, flags); - return 0; - case TIOCGSOFTCAR: spin_unlock_irqrestore(&ch->ch_lock, flags); |