Make sure to check ASYNC_INITIALISED before raising DTR when waking up
from blocked open in tty_port_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/tty_port.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 3de5918..52f1066 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -355,7 +355,7 @@ int tty_port_block_til_ready(struct tty_port *port,
while (1) {
/* Indicate we are open */
- if (tty->termios.c_cflag & CBAUD)
+ if (C_BAUD(tty) && test_bit(ASYNCB_INITIALIZED, &port->flags))
tty_port_raise_dtr_rts(port);
prepare_to_wait(&port->open_wait, &wait, TASK_INTERRUPTIBLE);
--
1.8.1.1
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
