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Commit 3b80df7c authored by Peter Hurley's avatar Peter Hurley Committed by Greg Kroah-Hartman
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tty: Don't change receive_room for ioctl(TIOCSETD) 



tty_set_ldisc() is guaranteed exclusive use of the line discipline
by tty_ldisc_lock_pair_timeout(); shutting off input by resetting
receive_room is unnecessary.

Signed-off-by: default avatarPeter Hurley <peter@hurleysoftware.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b0e95858

drivers/tty/tty_ldisc.c

+0 −3
Original line number Diff line number Diff line
@@ -540,9 +540,6 @@ int tty_set_ldisc(struct tty_struct *tty, int ldisc) 
		return 0;

	}



	/* FIXME: why 'shutoff' input if the ldisc is locked? */

	tty->receive_room = 0;



	old_ldisc = tty->ldisc;

	tty_lock(tty);