netfilter: xt extensions: use pr_<level>

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
diff --git a/net/netfilter/xt_LED.c b/net/netfilter/xt_LED.c
index 0d6c288..f511bea 100644
--- a/net/netfilter/xt_LED.c
+++ b/net/netfilter/xt_LED.c
@@ -18,7 +18,7 @@
  * 02110-1301 USA.
  *
  */
-
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 #include <linux/module.h>
 #include <linux/skbuff.h>
 #include <linux/netfilter/x_tables.h>
@@ -87,7 +87,7 @@
 	int err;
 
 	if (ledinfo->id[0] == '\0') {
-		printk(KERN_ERR KBUILD_MODNAME ": No 'id' parameter given.\n");
+		pr_info("No 'id' parameter given.\n");
 		return false;
 	}
 
@@ -99,11 +99,9 @@
 
 	err = led_trigger_register(&ledinternal->netfilter_led_trigger);
 	if (err) {
-		printk(KERN_CRIT KBUILD_MODNAME
-			": led_trigger_register() failed\n");
+		pr_warning("led_trigger_register() failed\n");
 		if (err == -EEXIST)
-			printk(KERN_ERR KBUILD_MODNAME
-				": Trigger name is already in use.\n");
+			pr_warning("Trigger name is already in use.\n");
 		goto exit_alloc;
 	}