diff --git a/include/asm-arm/arch-aaec2000/memory.h b/include/asm-arm/arch-aaec2000/memory.h
index 681b6a6171a1..79c90813bc3e 100644
--- a/include/asm-arm/arch-aaec2000/memory.h
+++ b/include/asm-arm/arch-aaec2000/memory.h
@@ -64,10 +64,6 @@
 #define NODE_MAX_MEM_SHIFT	26
 #define NODE_MAX_MEM_SIZE	(1 << NODE_MAX_MEM_SHIFT)
 
-#else
-
-#define PFN_TO_NID(addr)	(0)
-
 #endif /* CONFIG_DISCONTIGMEM */
 
 #endif /* __ASM_ARCH_MEMORY_H */
diff --git a/include/asm-arm/arch-iop3xx/memory.h b/include/asm-arm/arch-iop3xx/memory.h
index dc4735cb0c10..45351f5cd904 100644
--- a/include/asm-arm/arch-iop3xx/memory.h
+++ b/include/asm-arm/arch-iop3xx/memory.h
@@ -36,6 +36,4 @@
 
 #endif
 
-#define PFN_TO_NID(addr)	(0)
-
 #endif
diff --git a/include/asm-arm/arch-lh7a40x/memory.h b/include/asm-arm/arch-lh7a40x/memory.h
index 7e2fea372663..c650e6feb9d5 100644
--- a/include/asm-arm/arch-lh7a40x/memory.h
+++ b/include/asm-arm/arch-lh7a40x/memory.h
@@ -85,10 +85,6 @@
        (((unsigned long)(addr) & 0x01ffffff) >> PAGE_SHIFT)
 # endif
 
-#else
-
-# define PFN_TO_NID(addr)	(0)
-
 #endif
 
 #endif
diff --git a/include/asm-arm/arch-omap/memory.h b/include/asm-arm/arch-omap/memory.h
index 84f81e315a25..ef32d61eec7a 100644
--- a/include/asm-arm/arch-omap/memory.h
+++ b/include/asm-arm/arch-omap/memory.h
@@ -86,6 +86,5 @@
 
 #endif	/* CONFIG_ARCH_OMAP1510 */
 
-#define PHYS_TO_NID(addr) (0)
 #endif
 
diff --git a/include/asm-arm/arch-pxa/memory.h b/include/asm-arm/arch-pxa/memory.h
index 217a80b820ff..58bad9748b5c 100644
--- a/include/asm-arm/arch-pxa/memory.h
+++ b/include/asm-arm/arch-pxa/memory.h
@@ -67,10 +67,6 @@
 #define LOCAL_MAP_NR(addr) \
 	(((unsigned long)(addr) & 0x03ffffff) >> PAGE_SHIFT)
 
-#else
-
-#define PFN_TO_NID(addr)	(0)
-
 #endif
 
 #endif
diff --git a/include/asm-arm/arch-sa1100/memory.h b/include/asm-arm/arch-sa1100/memory.h
index 32d3d5bde34d..8743ff5c1b23 100644
--- a/include/asm-arm/arch-sa1100/memory.h
+++ b/include/asm-arm/arch-sa1100/memory.h
@@ -99,10 +99,6 @@ __arch_adjust_zones(int node, unsigned long *size, unsigned long *holes)
 #define LOCAL_MAP_NR(addr) \
 	(((unsigned long)(addr) & 0x07ffffff) >> PAGE_SHIFT)
 
-#else
-
-#define PFN_TO_NID(addr)	(0)
-
 #endif
 
 #endif