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-rw-r--r--drivers/base/cpu.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index bdd7e9f..0bf2dc1 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -16,9 +16,10 @@ struct sysdev_class cpu_sysdev_class = {
EXPORT_SYMBOL(cpu_sysdev_class);
#ifdef CONFIG_HOTPLUG_CPU
-#ifndef __HAVE_ARCH_SMP_PREPARE_CPU
-#define smp_prepare_cpu(cpu) (0)
-#endif
+int __attribute__((weak)) smp_prepare_cpu (int cpu)
+{
+ return 0;
+}
static ssize_t show_online(struct sys_device *dev, char *buf)
{
@@ -41,7 +42,7 @@ static ssize_t store_online(struct sys_device *dev, const char *buf,
break;
case '1':
ret = smp_prepare_cpu(cpu->sysdev.id);
- if (ret == 0)
+ if (!ret)
ret = cpu_up(cpu->sysdev.id);
break;
default:
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