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authorShachar Shemesh <shachar@liveu.tv>2012-07-10 07:54:13 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-07-12 14:54:14 -0700
commit40c9f61eae9098212b6906f29f30f08f7a19b5e2 (patch)
treeace42166f5546e2cd882813085567ffb27812909 /drivers/tty/tty_ldisc.c
parenteb26dfe8aa7eeb5a5aa0b7574550125f8aa4c3b3 (diff)
downloadop-kernel-dev-40c9f61eae9098212b6906f29f30f08f7a19b5e2.zip
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tty ldisc: Close/Reopen race prevention should check the proper flag
Commit acfa747b introduced the TTY_HUPPING flag to distinguish closed TTY from currently closing ones. The test in tty_set_ldisc still remained pointing at the old flag. This causes pppd to sometimes lapse into uninterruptible sleep when killed and restarted. Signed-off-by: Shachar Shemesh <shachar@liveu.tv> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/tty_ldisc.c')
-rw-r--r--drivers/tty/tty_ldisc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c
index ba8be39..847f7ed 100644
--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -659,7 +659,7 @@ int tty_set_ldisc(struct tty_struct *tty, int ldisc)
goto enable;
}
- if (test_bit(TTY_HUPPED, &tty->flags)) {
+ if (test_bit(TTY_HUPPING, &tty->flags)) {
/* We were raced by the hangup method. It will have stomped
the ldisc data and closed the ldisc down */
clear_bit(TTY_LDISC_CHANGING, &tty->flags);
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