--- linux-2.6.39/drivers/net/avm_cpu_connect/Makefile
+++ linux-2.6.39/drivers/net/avm_cpu_connect/Makefile
@@ -1,7 +1,7 @@
 #
 # Copyright (C) 2014 AVM GmbH <fritzbox_info@avm.de>
 #
-EXTRA_CFLAGS += -Wall -Wextra -Werror
+EXTRA_CFLAGS += -Wall -Wextra -Werror -Wno-error=unused-parameter
 
 obj-$(CONFIG_AVM_CPU_CONNECT) += avm_cpu_connect_driver.o
 
