lkml.org 
[lkml]   [2013]   [Apr]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/4] TTY: synclink_gt: fix DTR being raised on hang up
Date
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 <jhovold@gmail.com>
---
drivers/tty/synclink_gt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index aa9eece..1abf946 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -3308,7 +3308,7 @@ 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);
--
1.8.1.5


\
 
 \ /
  Last update: 2013-04-12 11:21    [W:0.896 / U:0.088 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site