diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
index 021979a6e23..bbb328fd117 100644
--- a/arch/x86/include/asm/mce.h
+++ b/arch/x86/include/asm/mce.h
@@ -8,6 +8,7 @@
  * Machine Check support for x86
  */
 
+/* MCG_CAP register defines */
 #define MCG_BANKCNT_MASK	0xff         /* Number of Banks */
 #define MCG_CTL_P		(1ULL<<8)    /* MCG_CTL register available */
 #define MCG_EXT_P		(1ULL<<9)    /* Extended registers available */
@@ -17,10 +18,12 @@
 #define MCG_EXT_CNT(c)		(((c) & MCG_EXT_CNT_MASK) >> MCG_EXT_CNT_SHIFT)
 #define MCG_SER_P	 	(1ULL<<24)   /* MCA recovery/new status bits */
 
+/* MCG_STATUS register defines */
 #define MCG_STATUS_RIPV  (1ULL<<0)   /* restart ip valid */
 #define MCG_STATUS_EIPV  (1ULL<<1)   /* ip points to correct instruction */
 #define MCG_STATUS_MCIP  (1ULL<<2)   /* machine check in progress */
 
+/* MCi_STATUS register defines */
 #define MCI_STATUS_VAL   (1ULL<<63)  /* valid error */
 #define MCI_STATUS_OVER  (1ULL<<62)  /* previous errors lost */
 #define MCI_STATUS_UC    (1ULL<<61)  /* uncorrected error */
@@ -31,12 +34,14 @@
 #define MCI_STATUS_S	 (1ULL<<56)  /* Signaled machine check */
 #define MCI_STATUS_AR	 (1ULL<<55)  /* Action required */
 
-/* MISC register defines */
-#define MCM_ADDR_SEGOFF  0	/* segment offset */
-#define MCM_ADDR_LINEAR  1	/* linear address */
-#define MCM_ADDR_PHYS	 2	/* physical address */
-#define MCM_ADDR_MEM	 3	/* memory address */
-#define MCM_ADDR_GENERIC 7	/* generic */
+/* MCi_MISC register defines */
+#define MCI_MISC_ADDR_LSB(m)	((m) & 0x3f)
+#define MCI_MISC_ADDR_MODE(m)	(((m) >> 6) & 7)
+#define  MCI_MISC_ADDR_SEGOFF	0	/* segment offset */
+#define  MCI_MISC_ADDR_LINEAR	1	/* linear address */
+#define  MCI_MISC_ADDR_PHYS	2	/* physical address */
+#define  MCI_MISC_ADDR_MEM	3	/* memory address */
+#define  MCI_MISC_ADDR_GENERIC	7	/* generic */
 
 /* CTL2 register defines */
 #define MCI_CTL2_CMCI_EN		(1ULL << 30)
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index e81d48b0561..e80750802d7 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -844,9 +844,9 @@ static int mce_usable_address(struct mce *m)
 {
 	if (!(m->status & MCI_STATUS_MISCV) || !(m->status & MCI_STATUS_ADDRV))
 		return 0;
-	if ((m->misc & 0x3f) > PAGE_SHIFT)
+	if (MCI_MISC_ADDR_LSB(m->misc) > PAGE_SHIFT)
 		return 0;
-	if (((m->misc >> 6) & 7) != MCM_ADDR_PHYS)
+	if (MCI_MISC_ADDR_MODE(m->misc) != MCI_MISC_ADDR_PHYS)
 		return 0;
 	return 1;
 }