From: Johan Hovold <jhovold@gmail.com>
Date: Thu, 7 Mar 2013 14:55:48 +0000 (+0100)
Subject: TTY: clean up port shutdown
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8bde9658a0e6a7098dcda1ce6ea6b278029644b4;p=linux-beck.git

TTY: clean up port shutdown

Untangle port-shutdown logic and make sure the initialised flag is
always cleared for non-console ports.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 7f38eeaafac3..2aea2f91e271 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -199,9 +199,14 @@ EXPORT_SYMBOL(tty_port_tty_set);
 static void tty_port_shutdown(struct tty_port *port)
 {
 	mutex_lock(&port->mutex);
-	if (port->ops->shutdown && !port->console &&
-		test_and_clear_bit(ASYNCB_INITIALIZED, &port->flags))
+	if (port->console)
+		goto out;
+
+	if (test_and_clear_bit(ASYNCB_INITIALIZED, &port->flags)) {
+		if (port->ops->shutdown)
 			port->ops->shutdown(port);
+	}
+out:
 	mutex_unlock(&port->mutex);
 }