From 7834909f1eb96ba7c49ca2b9e3a69b500a2cff76 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Fri, 2 Jan 2009 13:46:43 +0000 Subject: [PATCH] tty: tty port zero baud open If we have no speed set at some point then we should not raise DTR/RTS at that point when opening as the tty is not ready Signed-off-by: Alan Cox Signed-off-by: Linus Torvalds --- drivers/char/tty_port.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/char/tty_port.c b/drivers/char/tty_port.c index ff94182b381..0723664fe0a 100644 --- a/drivers/char/tty_port.c +++ b/drivers/char/tty_port.c @@ -216,7 +216,8 @@ int tty_port_block_til_ready(struct tty_port *port, while (1) { /* Indicate we are open */ - tty_port_raise_dtr_rts(port); + if (tty->termios->c_cflag & CBAUD) + tty_port_raise_dtr_rts(port); set_current_state(TASK_INTERRUPTIBLE); /* Check for a hangup or uninitialised port. Return accordingly */ -- 2.11.4.GIT