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Commit b413f00a authored by Al Viro's avatar Al Viro
Browse files

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: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 6bbf2658

drivers/staging/dgnc/dgnc_tty.c

+0 −75
Original line number Diff line number Diff line
@@ -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);