diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h
index 221380a73b0a24ec06835f286bfdbc1d2937c79d..fe2c3cf822818a63389bfd1fbab5c2f0bc041cf1 100644
--- a/arch/arc/include/asm/arcregs.h
+++ b/arch/arc/include/asm/arcregs.h
@@ -50,11 +50,7 @@
  * [15: 8] = Exception Cause Code
  * [ 7: 0] = Exception Parameters (for certain types only)
  */
-#define ECR_VEC_MASK			0xff0000
-#define ECR_CODE_MASK			0x00ff00
-#define ECR_PARAM_MASK			0x0000ff
-
-/* Exception Cause Vector Values */
+#define ECR_V_MEM_ERR			0x01
 #define ECR_V_INSN_ERR			0x02
 #define ECR_V_MACH_CHK			0x20
 #define ECR_V_ITLB_MISS			0x21
@@ -62,7 +58,8 @@
 #define ECR_V_PROTV			0x23
 #define ECR_V_TRAP			0x25
 
-/* Protection Violation Exception Cause Code Values */
+/* DTLB Miss and Protection Violation Cause Codes */
+
 #define ECR_C_PROTV_INST_FETCH		0x00
 #define ECR_C_PROTV_LOAD		0x01
 #define ECR_C_PROTV_STORE		0x02