hwmon: (pkgtemp) align driver initialization style with coretemp

pkgtemp is derived from coretemp, so some reasonable
logics should be applied onto pkgtemp, too. Such as
the init logic here.
Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>

drivers/hwmon/pkgtemp.c

@@ -34,6 +34,7 @@
 #include <linux/cpu.h>
 #include <asm/msr.h>
 #include <asm/processor.h>
+#include <asm/smp.h>
 
 #define DRVNAME	"pkgtemp"
 
@@ -391,7 +392,6 @@ static struct notifier_block pkgtemp_cpu_notifier __refdata = {
 static int __init pkgtemp_init(void)
 {
 	int i, err = -ENODEV;
-	struct pdev_entry *p, *n;
 
 	/* quick check if we run Intel */
 	if (cpu_data(0).x86_vendor != X86_VENDOR_INTEL)
@@ -401,31 +401,25 @@ static int __init pkgtemp_init(void)
 	if (err)
 		goto exit;
 
-	for_each_online_cpu(i) {
-		err = pkgtemp_device_add(i);
-		if (err)
-			goto exit_devices_unreg;
-	}
+	for_each_online_cpu(i)
+		pkgtemp_device_add(i);
+
+#ifndef CONFIG_HOTPLUG_CPU
 	if (list_empty(&pdev_list)) {
 		err = -ENODEV;
 		goto exit_driver_unreg;
 	}
+#endif
 
 #ifdef CONFIG_HOTPLUG_CPU
 	register_hotcpu_notifier(&pkgtemp_cpu_notifier);
 #endif
 	return 0;
 
-exit_devices_unreg:
-	mutex_lock(&pdev_list_mutex);
-	list_for_each_entry_safe(p, n, &pdev_list, list) {
-		platform_device_unregister(p->pdev);
-		list_del(&p->list);
-		kfree(p);
-	}
-	mutex_unlock(&pdev_list_mutex);
+#ifndef CONFIG_HOTPLUG_CPU
 exit_driver_unreg:
 	platform_driver_unregister(&pkgtemp_driver);
+#endif
 exit:
 	return err;
 }