[PATCH 2/4] TTY: synclink_gt: fix DTR being raised on hang up

From: Johan Hovold
Date: Fri Apr 12 2013 - 04:34:01 EST

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@xxxxxxxxx>
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,

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


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