X-Git-Url: http://git.monstr.eu/?a=blobdiff_plain;f=kernel%2Fcpu.c;h=3046a503242c8eb67f031d445713a9e55c986e73;hb=b2e902f024fa6f6f27b335c478d81bab0cb2c768;hp=f45657f1eb8ee3bb2ae084f5ebc4f22d80675eba;hpb=cff2f741b8ee8a70b208830e330de053efd4fc45;p=linux-2.6-microblaze.git

diff --git a/kernel/cpu.c b/kernel/cpu.c
index f45657f1eb8e..3046a503242c 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -603,6 +603,11 @@ cpu_hotplug_pm_callback(struct notifier_block *nb,
 
 static int __init cpu_hotplug_pm_sync_init(void)
 {
+	/*
+	 * cpu_hotplug_pm_callback has higher priority than x86
+	 * bsp_pm_callback which depends on cpu_hotplug_pm_callback
+	 * to disable cpu hotplug to avoid cpu hotplug race.
+	 */
 	pm_notifier(cpu_hotplug_pm_callback, 0);
 	return 0;
 }