clocksource: clocksource_select must be called with mutex locked

The callers of clocksource_select must hold clocksource_mutex to
protect the clocksource_list.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <new-submission>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index 5697155f1868037fa0fd1863cfabc6ee69399b98..2c2e5ba1453d4e5ce977a70d89d24394233c7590 100644 (file)
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -471,7 +471,9 @@ static void clocksource_select(void)
 static int __init clocksource_done_booting(void)
 {
        finished_booting = 1;
+       mutex_lock(&clocksource_mutex);
        clocksource_select();
+       mutex_unlock(&clocksource_mutex);
        return 0;
 }
 fs_initcall(clocksource_done_booting);