diff --git a/arch/c6x/Makefile b/arch/c6x/Makefile
index 6f6096ff05a4..6ab942e6c534 100644
--- a/arch/c6x/Makefile
+++ b/arch/c6x/Makefile
@@ -25,6 +25,7 @@ KBUILD_AFLAGS   += -mbig-endian
 LINKFLAGS       += -mbig-endian
 KBUILD_LDFLAGS  += -mbig-endian
 LDFLAGS += -EB
+CHECKFLAGS	+= -D_BIG_ENDIAN
 endif
 
 head-y          := arch/c6x/kernel/head.o
diff --git a/arch/c6x/kernel/asm-offsets.c b/arch/c6x/kernel/asm-offsets.c
index cff57764fcad..0f8fde494875 100644
--- a/arch/c6x/kernel/asm-offsets.c
+++ b/arch/c6x/kernel/asm-offsets.c
@@ -107,7 +107,6 @@ void foo(void)
 	/* These would be unneccessary if we ran asm files
 	 * through the preprocessor.
 	 */
-	DEFINE(KTHREAD_SIZE, THREAD_SIZE);
 	DEFINE(KTHREAD_SHIFT, THREAD_SHIFT);
 	DEFINE(KTHREAD_START_SP, THREAD_START_SP);
 	DEFINE(ENOSYS_, ENOSYS);
diff --git a/arch/c6x/platforms/plldata.c b/arch/c6x/platforms/plldata.c
index e8b6cc6a7b5a..1ef04b5ab93f 100644
--- a/arch/c6x/platforms/plldata.c
+++ b/arch/c6x/platforms/plldata.c
@@ -19,6 +19,7 @@
 
 #include <asm/clock.h>
 #include <asm/setup.h>
+#include <asm/special_insns.h>
 #include <asm/irq.h>
 
 /*