[PATCH tty-next] tty: Fix unsafe bit ops in tty_throttle_safe/unthrottle_safe

[Peter Hurley]

tty->flags needs to be atomically modified.

Signed-off-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
---
 drivers/tty/tty_ioctl.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/tty_ioctl.c b/drivers/tty/tty_ioctl.c
index 2febed5..ce67f2c 100644
--- a/drivers/tty/tty_ioctl.c
+++ b/drivers/tty/tty_ioctl.c
@@ -156,7 +156,7 @@ int tty_throttle_safe(struct tty_struct *tty)
 		if (tty->flow_change != TTY_THROTTLE_SAFE)
 			ret = 1;
 		else {
-			__set_bit(TTY_THROTTLED, &tty->flags);
+			set_bit(TTY_THROTTLED, &tty->flags);
 			if (tty->ops->throttle)
 				tty->ops->throttle(tty);
 		}
@@ -187,7 +187,7 @@ int tty_unthrottle_safe(struct tty_struct *tty)
 		if (tty->flow_change != TTY_UNTHROTTLE_SAFE)
 			ret = 1;
 		else {
-			__clear_bit(TTY_THROTTLED, &tty->flags);
+			clear_bit(TTY_THROTTLED, &tty->flags);
 			if (tty->ops->unthrottle)
 				tty->ops->unthrottle(tty);
 		}
-- 
1.8.1.2

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