diff --git a/drivers/arm/gic/v3/gicv3_private.h b/drivers/arm/gic/v3/gicv3_private.h
index db485d2..e1c0775 100644
--- a/drivers/arm/gic/v3/gicv3_private.h
+++ b/drivers/arm/gic/v3/gicv3_private.h
@@ -27,20 +27,20 @@
  * GICD_IROUTER. Bits[31:24] in the MPIDR are cleared as they are not relevant
  * to GICv3.
  */
-#define gicd_irouter_val_from_mpidr(mpidr, irm)		\
-	((mpidr & ~(0xff << 24)) |			\
-	 (irm & IROUTER_IRM_MASK) << IROUTER_IRM_SHIFT)
+#define gicd_irouter_val_from_mpidr(_mpidr, _irm)		\
+	((_mpidr & ~(0xff << 24)) |			\
+	 (_irm & IROUTER_IRM_MASK) << IROUTER_IRM_SHIFT)
 
 /*
  * Macro to convert a GICR_TYPER affinity value into a MPIDR value. Bits[31:24]
  * are zeroes.
  */
 #ifdef AARCH32
-#define mpidr_from_gicr_typer(typer_val)	(((typer_val) >> 32) & 0xffffff)
+#define mpidr_from_gicr_typer(_typer_val)	(((_typer_val) >> 32) & 0xffffff)
 #else
-#define mpidr_from_gicr_typer(typer_val)				 \
-	(((((typer_val) >> 56) & MPIDR_AFFLVL_MASK) << MPIDR_AFF3_SHIFT) | \
-	 (((typer_val) >> 32) & 0xffffff))
+#define mpidr_from_gicr_typer(_typer_val)				 \
+	(((((_typer_val) >> 56) & MPIDR_AFFLVL_MASK) << MPIDR_AFF3_SHIFT) | \
+	 (((_typer_val) >> 32) & 0xffffff))
 #endif
 
 /*******************************************************************************
diff --git a/drivers/arm/smmu/smmu_v3.c b/drivers/arm/smmu/smmu_v3.c
index cfe8c2a..7b017e3 100644
--- a/drivers/arm/smmu/smmu_v3.c
+++ b/drivers/arm/smmu/smmu_v3.c
@@ -8,8 +8,8 @@
 #include <smmu_v3.h>
 
 /* Test for pending invalidate */
-#define INVAL_PENDING(base)	\
-	smmuv3_read_s_init(base) & SMMU_S_INIT_INV_ALL_MASK
+#define INVAL_PENDING(_base)	\
+	smmuv3_read_s_init(_base) & SMMU_S_INIT_INV_ALL_MASK
 
 static inline uint32_t smmuv3_read_s_idr1(uintptr_t base)
 {
diff --git a/drivers/arm/tzc/tzc400.c b/drivers/arm/tzc/tzc400.c
index 0999fa5..db4f88a 100644
--- a/drivers/arm/tzc/tzc400.c
+++ b/drivers/arm/tzc/tzc400.c
@@ -54,7 +54,7 @@
 /*
  * Get the open status information for all filter units.
  */
-#define get_gate_keeper_os(base)	((_tzc400_read_gate_keeper(base) >>	\
+#define get_gate_keeper_os(_base)	((_tzc400_read_gate_keeper(_base) >>  \
 					GATE_KEEPER_OS_SHIFT) &		\
 					GATE_KEEPER_OS_MASK)