iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tty: Fix unsafe bit ops in tty_throttle_safe/unthrottle_safe

Browse Source 
tty->flags needs to be atomically modified.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Hurley 2013-04-15 11:06:06 -04:00 committed by Greg Kroah-Hartman
parent 31815c08fc
commit 579a00a5c2
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/tty/tty_ioctl.c
View File

@ -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);
}