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Subject[PATCH 4/4] TTY: ircomm: fix DTR being raised on hang up
Date
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.

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
---
net/irda/ircomm/ircomm_tty.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c
index 362ba47..41ac7938 100644
--- a/net/irda/ircomm/ircomm_tty.c
+++ b/net/irda/ircomm/ircomm_tty.c
@@ -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);
--
1.8.1.5


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