From 53a72d57515b2c94af616bceab79751f894eca56 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 12 Apr 2013 10:32:30 +0200 Subject: TTY: synclinkmp: fix DTR being raised on hang up Make sure to check ASYNC_INITIALISED before raising DTR when waking up from blocked open in 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 Signed-off-by: Greg Kroah-Hartman --- drivers/tty/synclinkmp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/synclinkmp.c b/drivers/tty/synclinkmp.c index 6d5780cf1d57..ff171384ea52 100644 --- a/drivers/tty/synclinkmp.c +++ b/drivers/tty/synclinkmp.c @@ -3329,7 +3329,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, port->blocked_open++; 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); -- cgit v1.2.3