X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fbase%2Ftopology.c;h=e1d3ad4db2f04355631efd8120946c07313789c8;hb=160acc2e899f26356bde92bc257253b7ca78f0c3;hp=28dccb730af99032a9bf653990b604df35ff29b9;hpb=752c58a471c108d64da1676b2925dfbd83eb177e;p=linux-2.6

diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index 28dccb730a..e1d3ad4db2 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -95,53 +95,54 @@ static struct attribute_group topology_attr_group = {
 };
 
 /* Add/Remove cpu_topology interface for CPU device */
-static int __cpuinit topology_add_dev(struct sys_device * sys_dev)
+static int __cpuinit topology_add_dev(unsigned int cpu)
 {
+	struct sys_device *sys_dev = get_cpu_sysdev(cpu);
+
 	return sysfs_create_group(&sys_dev->kobj, &topology_attr_group);
 }
 
-static int __cpuinit topology_remove_dev(struct sys_device * sys_dev)
+static void __cpuinit topology_remove_dev(unsigned int cpu)
 {
+	struct sys_device *sys_dev = get_cpu_sysdev(cpu);
+
 	sysfs_remove_group(&sys_dev->kobj, &topology_attr_group);
-	return 0;
 }
 
 static int __cpuinit topology_cpu_callback(struct notifier_block *nfb,
-		unsigned long action, void *hcpu)
+					   unsigned long action, void *hcpu)
 {
 	unsigned int cpu = (unsigned long)hcpu;
-	struct sys_device *sys_dev;
+	int rc = 0;
 
-	sys_dev = get_cpu_sysdev(cpu);
 	switch (action) {
-	case CPU_ONLINE:
-		topology_add_dev(sys_dev);
+	case CPU_UP_PREPARE:
+	case CPU_UP_PREPARE_FROZEN:
+		rc = topology_add_dev(cpu);
 		break;
+	case CPU_UP_CANCELED:
+	case CPU_UP_CANCELED_FROZEN:
 	case CPU_DEAD:
-		topology_remove_dev(sys_dev);
+	case CPU_DEAD_FROZEN:
+		topology_remove_dev(cpu);
 		break;
 	}
-	return NOTIFY_OK;
+	return rc ? NOTIFY_BAD : NOTIFY_OK;
 }
 
-static struct notifier_block __cpuinitdata topology_cpu_notifier =
-{
-	.notifier_call = topology_cpu_callback,
-};
-
 static int __cpuinit topology_sysfs_init(void)
 {
-	int i;
+	int cpu;
+	int rc;
 
-	for_each_online_cpu(i) {
-		topology_cpu_callback(&topology_cpu_notifier, CPU_ONLINE,
-				(void *)(long)i);
+	for_each_online_cpu(cpu) {
+		rc = topology_add_dev(cpu);
+		if (rc)
+			return rc;
 	}
-
-	register_hotcpu_notifier(&topology_cpu_notifier);
+	hotcpu_notifier(topology_cpu_callback, 0);
 
 	return 0;
 }
 
 device_initcall(topology_sysfs_init);
-