[PATCH] Remove redundant up() in stop_machine()

An up() is called in kernel/stop_machine.c on failure, and also in the
caller (unconditionally).

Signed-off-by: Zhou Yingchao <yingchao.zhou@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c
index dcfb5d7..51cacd1 100644 (file)
--- a/kernel/stop_machine.c
+++ b/kernel/stop_machine.c
@@ -111,7 +111,6 @@ static int stop_machine(void)
        /* If some failed, kill them all. */
        if (ret < 0) {
                stopmachine_set_state(STOPMACHINE_EXIT);
-               up(&stopmachine_mutex);
                return ret;
        }