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authorShachar Shemesh <shachar@liveu.tv>2012-07-10 08:54:13 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-07-27 00:37:06 +0400
commitaa3c8af86382227c2a599dc477bfc5b127d3f569 (patch)
treefd435cb63a16906acc177333fc79a0758c4da853 /drivers/tty
parent2588aba002d14e938c2f56d299ecf3e7ce1302a5 (diff)
downloadlinux-aa3c8af86382227c2a599dc477bfc5b127d3f569.tar.xz
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')
-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 9911eb6b34cd..6f99c9959f0c 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);