--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -253,10 +253,7 @@ else
 drv_dsl_cpe_api_common_mod_cflags =
 endif
 
-drv_dsl_cpe_api_common_cflags = -DLINUX -D__LINUX__ -D__KERNEL__ -DEXPORT_SYMTAB \
-    -pipe -Wall -Wformat -Wimplicit -Wunused -Wswitch -Wcomment -Winline \
-    -Wuninitialized -Wparentheses -Wsign-compare -Wreturn-type \
-    -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common
+drv_dsl_cpe_api_common_cflags = -DLINUX -D__LINUX__ -D__KERNEL__ -DEXPORT_SYMTAB
 
 if DSL_DBG_MAX_LEVEL_SET
 drv_dsl_cpe_api_common_cflags += -DDSL_DBG_MAX_LEVEL=$(DSL_DBG_MAX_LEVEL_PRE)
@@ -266,7 +263,7 @@ endif
 drv_dsl_cpe_api_target_cflags = $(ADD_DRV_CFLAGS)
 
 # compile cflags
-drv_dsl_cpe_api_compile_cflags = $(EXTRA_DRV_CFLAGS)
+drv_dsl_cpe_api_compile_cflags =
 
 if !KERNEL_2_6
 # the headerfile of linux kernels 2.6.x contain to much arithmetic
@@ -314,7 +311,7 @@ drv_dsl_cpe_api.ko: $(drv_dsl_cpe_api_SO
 	@echo -e "# drv_dsl_cpe_api: Generated to build Linux 2.6.x kernel object" > $(PWD)/Kbuild
 	@echo -e "obj-m := $(subst .ko,.o,$@)"			>> $(PWD)/Kbuild
 	@echo -e "$(subst .ko,,$@)-y := $(drv_dsl_cpe_api_OBJS)"	>> $(PWD)/Kbuild
-	@echo -e "EXTRA_CFLAGS := $(CFLAGS) -DHAVE_CONFIG_H $(drv_dsl_cpe_api_CFLAGS) $(DSL_DRIVER_INCL_PATH) $(IFXOS_INCLUDE_PATH) -I@abs_srcdir@/include -I$(PWD)/include"	>> $(PWD)/Kbuild
+	@echo -e "EXTRA_CFLAGS := -DHAVE_CONFIG_H $(drv_dsl_cpe_api_CFLAGS) $(DSL_DRIVER_INCL_PATH) $(IFXOS_INCLUDE_PATH) -I@abs_srcdir@/include -I$(PWD)/include"	>> $(PWD)/Kbuild
 	$(MAKE) ARCH=@KERNEL_ARCH@ -C @KERNEL_BUILD_PATH@ O=@KERNEL_BUILD_PATH@ M=$(PWD) modules
 
 clean-generic: