diff --git a/drivers/isdn/gigaset/gigaset.h b/drivers/isdn/gigaset/gigaset.h
index 901ff43..747178f 100644
--- a/drivers/isdn/gigaset/gigaset.h
+++ b/drivers/isdn/gigaset/gigaset.h
@@ -16,6 +16,9 @@
 #ifndef GIGASET_H
 #define GIGASET_H
 
+/* define global prefix for pr_ macros in linux/kernel.h */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/compiler.h>
 #include <linux/types.h>
@@ -97,17 +100,6 @@
 					 activated */
 };
 
-/* Kernel message macros for situations where dev_printk and friends cannot be
- * used for lack of reliable access to a device structure.
- * linux/usb.h already contains these but in an obsolete form which clutters
- * the log needlessly, and according to the USB maintainer those should be
- * removed rather than fixed anyway.
- */
-#undef err
-
-#define err(format, arg...) printk(KERN_ERR KBUILD_MODNAME ": " \
-	format "\n" , ## arg)
-
 #ifdef CONFIG_GIGASET_DEBUG
 
 #define gig_dbg(level, format, arg...) \