[PATCH AUTOSEL 4.14 70/95] vt: always call notifier with the console lock held

[Sasha Levin]

From: Nicolas Pitre <nicolas.pitre@xxxxxxxxxx>

[ Upstream commit 7e1d226345f89ad5d0216a9092c81386c89b4983 ]

Every invocation of notify_write() and notify_update() is performed
under the console lock, except for one case. Let's fix that.

Signed-off-by: Nicolas Pitre <nico@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
 drivers/tty/vt/vt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 1fb5e7f409c4..6ff921cf9a9e 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -2435,8 +2435,8 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co
 	}
 	con_flush(vc, draw_from, draw_to, &draw_x);
 	console_conditional_schedule();
-	console_unlock();
 	notify_update(vc);
+	console_unlock();
 	return n;
 }
 
-- 
2.20.1