Commit e1c969f7 authored Apr 12, 2013 by Johan Hovold Committed by Greg Kroah-Hartman Apr 12, 2013

TTY: ircomm: fix DTR being raised on hang up



Make sure to check ASYNC_INITIALISED before raising DTR when waking up
from blocked open in ircomm_tty_block_til_ready.

Currently DTR could get raised at hang up as a blocked process would
raise DTR unconditionally before checking for hang up and returning.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 53a72d57

net/irda/ircomm/ircomm_tty.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -328,7 +328,7 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self,
		spin_unlock_irqrestore(&port->lock, flags);

		while (1) {
		if (tty->termios.c_cflag & CBAUD)
		if (C_BAUD(tty) && test_bit(ASYNCB_INITIALIZED, &port->flags))
		tty_port_raise_dtr_rts(port);

		set_current_state(TASK_INTERRUPTIBLE);