diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 7c1102e41fe25b917dcce6566c0bf494ceef867e..ac1d5b611a27d2ea08d34cf983bbef5f94f1776e 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -286,11 +286,11 @@ CLEAN_FILES += vmlinux.32 vmlinux.64
 archprepare:
 ifdef CONFIG_MIPS32_N32
 	@echo '  Checking missing-syscalls for N32'
-	$(Q)$(MAKE) $(build)=. missing-syscalls EXTRA_CFLAGS="-mabi=n32"
+	$(Q)$(MAKE) $(build)=. missing-syscalls ccflags-y="-mabi=n32"
 endif
 ifdef CONFIG_MIPS32_O32
 	@echo '  Checking missing-syscalls for O32'
-	$(Q)$(MAKE) $(build)=. missing-syscalls EXTRA_CFLAGS="-mabi=32"
+	$(Q)$(MAKE) $(build)=. missing-syscalls ccflags-y="-mabi=32"
 endif
 
 install:
diff --git a/arch/mips/bcm63xx/boards/Makefile b/arch/mips/bcm63xx/boards/Makefile
index e5cc86dc1da83de4d2b09f6d134a81f1089bb1df..9f64fb41407743358f55a36377617613fb9a0383 100644
--- a/arch/mips/bcm63xx/boards/Makefile
+++ b/arch/mips/bcm63xx/boards/Makefile
@@ -1,3 +1,3 @@
 obj-$(CONFIG_BOARD_BCM963XX)		+= board_bcm963xx.o
 
-EXTRA_CFLAGS += -Werror
+ccflags-y := -Werror
diff --git a/arch/mips/fw/arc/Makefile b/arch/mips/fw/arc/Makefile
index e0aaad482b0ebc806e971101a4f701ff30d2848e..5314b37aff2c493a736eb438a47f03d33cba509f 100644
--- a/arch/mips/fw/arc/Makefile
+++ b/arch/mips/fw/arc/Makefile
@@ -9,4 +9,4 @@ lib-$(CONFIG_ARC_MEMORY)	+= memory.o
 lib-$(CONFIG_ARC_CONSOLE)	+= arc_con.o
 lib-$(CONFIG_ARC_PROMLIB)	+= promlib.o
 
-EXTRA_CFLAGS			+= -Werror
+ccflags-y			:= -Werror
diff --git a/arch/mips/jz4740/Makefile b/arch/mips/jz4740/Makefile
index a604eaeb6c08533616839485b6f8fc89a032ed2b..a9dff33212518d752b8620a969a79da3935543d1 100644
--- a/arch/mips/jz4740/Makefile
+++ b/arch/mips/jz4740/Makefile
@@ -17,4 +17,4 @@ obj-$(CONFIG_JZ4740_QI_LB60)	+= board-qi_lb60.o
 
 obj-$(CONFIG_PM) += pm.o
 
-EXTRA_CFLAGS += -Werror -Wall
+ccflags-y := -Werror -Wall
diff --git a/arch/mips/oprofile/Makefile b/arch/mips/oprofile/Makefile
index 02cc65e52d11b47574b2940e5859a733f7d0fd85..4b9d7044e26c236b87f3f4497cacd5acd1cc7e4b 100644
--- a/arch/mips/oprofile/Makefile
+++ b/arch/mips/oprofile/Makefile
@@ -1,4 +1,4 @@
-EXTRA_CFLAGS := -Werror
+ccflags-y := -Werror
 
 obj-$(CONFIG_OPROFILE) += oprofile.o
 
diff --git a/arch/mips/pmc-sierra/yosemite/Makefile b/arch/mips/pmc-sierra/yosemite/Makefile
index b16f95c3df654a089a33b7b9655228863421e865..02f5fb94ea2808a5bf580679421598e0659961d2 100644
--- a/arch/mips/pmc-sierra/yosemite/Makefile
+++ b/arch/mips/pmc-sierra/yosemite/Makefile
@@ -6,4 +6,4 @@ obj-y    += irq.o prom.o py-console.o setup.o
 
 obj-$(CONFIG_SMP)		+= smp.o
 
-EXTRA_CFLAGS += -Werror
+ccflags-y := -Werror
diff --git a/arch/mips/powertv/Makefile b/arch/mips/powertv/Makefile
index baf6e9092a9f84b941b37986dac89a289b5225a8..348d2e850ef5128d42a34fe761fe357fdb5fc5ff 100644
--- a/arch/mips/powertv/Makefile
+++ b/arch/mips/powertv/Makefile
@@ -28,4 +28,4 @@ obj-y += init.o ioremap.o memory.o powertv_setup.o reset.o time.o \
 
 obj-$(CONFIG_USB) += powertv-usb.o
 
-EXTRA_CFLAGS += -Wall
+ccflags-y := -Wall
diff --git a/arch/mips/powertv/asic/Makefile b/arch/mips/powertv/asic/Makefile
index f0e95dc0ac97b4f63e924f3ae4387eb49e73199b..d810a33182a4a6b76a250e86532930b2f4d23f98 100644
--- a/arch/mips/powertv/asic/Makefile
+++ b/arch/mips/powertv/asic/Makefile
@@ -20,4 +20,4 @@ obj-y += asic-calliope.o asic-cronus.o asic-gaia.o asic-zeus.o \
 	asic_devices.o asic_int.o irq_asic.o prealloc-calliope.o \
 	prealloc-cronus.o prealloc-cronuslite.o prealloc-gaia.o prealloc-zeus.o
 
-EXTRA_CFLAGS += -Wall -Werror
+ccflags-y := -Wall -Werror
diff --git a/arch/mips/powertv/pci/Makefile b/arch/mips/powertv/pci/Makefile
index f5c62462fc9daf458b8248331dca8b6672a8bf7b..5783201cd2c81196659939f6ba495069118e6281 100644
--- a/arch/mips/powertv/pci/Makefile
+++ b/arch/mips/powertv/pci/Makefile
@@ -18,4 +18,4 @@
 
 obj-$(CONFIG_PCI)	+= fixup-powertv.o
 
-EXTRA_CFLAGS += -Wall -Werror
+ccflags-y := -Wall -Werror