summaryrefslogtreecommitdiffstats
path: root/drivers/char/pty.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/char/pty.c')
-rw-r--r--drivers/char/pty.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/char/pty.c b/drivers/char/pty.c
index 706ff347..6288356 100644
--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -181,6 +181,7 @@ static int pty_set_lock(struct tty_struct *tty, int __user * arg)
static void pty_flush_buffer(struct tty_struct *tty)
{
struct tty_struct *to = tty->link;
+ unsigned long flags;
if (!to)
return;
@@ -189,8 +190,10 @@ static void pty_flush_buffer(struct tty_struct *tty)
to->ldisc.flush_buffer(to);
if (to->packet) {
+ spin_lock_irqsave(&tty->ctrl_lock, flags);
tty->ctrl_status |= TIOCPKT_FLUSHWRITE;
wake_up_interruptible(&to->read_wait);
+ spin_unlock_irqrestore(&tty->ctrl_lock, flags);
}
}
OpenPOWER on IntegriCloud