kobject: to repalce printk with pr_* style

Repalce printk with pr_warn in kobject_synth_uevent and replace
printk with pr_err in uevent_net_init to make both consistent with
other code in kobject_uevent.c
Signed-off-by: Bo YU <tsu.yubo@gmail.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

lib/kobject_uevent.c

@@ -224,7 +224,7 @@ int kobject_synth_uevent(struct kobject *kobj, const char *buf, size_t count)
 out:
 	if (r) {
 		devpath = kobject_get_path(kobj, GFP_KERNEL);
-		printk(KERN_WARNING "synth uevent: %s: %s",
+		pr_warn("synth uevent: %s: %s",
 		       devpath ?: "unknown device",
 		       msg ?: "failed to send uevent");
 		kfree(devpath);
@@ -765,8 +765,7 @@ static int uevent_net_init(struct net *net)
 
 	ue_sk->sk = netlink_kernel_create(net, NETLINK_KOBJECT_UEVENT, &cfg);
 	if (!ue_sk->sk) {
-		printk(KERN_ERR
-		       "kobject_uevent: unable to create netlink socket!\n");
+		pr_err("kobject_uevent: unable to create netlink socket!\n");
 		kfree(ue_sk);
 		return -ENODEV;
 	}