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>

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);