| From | Peter Hurley <> | Subject | [PATCH v5 19/44] tty: Don't protect atomic operation with mutex | Date | Mon, 11 Mar 2013 16:44:39 -0400 |
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test_bit() is already atomic; drop mutex lock/unlock.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com> --- drivers/tty/tty_io.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 2ac516d..bf33440 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -1345,9 +1345,7 @@ static int tty_reopen(struct tty_struct *tty) } tty->count++; - mutex_lock(&tty->ldisc_mutex); WARN_ON(!test_bit(TTY_LDISC, &tty->flags)); - mutex_unlock(&tty->ldisc_mutex); return 0; } -- 1.8.1.2
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