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-rw-r--r--drivers/tty/pty.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index e554393d5551..bcec4c71a408 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -186,8 +186,9 @@ static int pty_set_pktmode(struct tty_struct *tty, int __user *arg)
spin_lock_irq(&tty->ctrl_lock);
if (pktmode) {
if (!tty->packet) {
- tty->packet = 1;
tty->link->ctrl_status = 0;
+ smp_mb();
+ tty->packet = 1;
}
} else
tty->packet = 0;