diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index 7238b3b..0202a7c 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -178,6 +178,11 @@
  * memory.  Use of these is *deprecated* (and that doesn't mean
  * use the __ prefixed forms instead.)  See dma-mapping.h.
  */
+#ifndef __virt_to_bus
+#define __virt_to_bus	__virt_to_phys
+#define __bus_to_virt	__phys_to_virt
+#endif
+
 static inline __deprecated unsigned long virt_to_bus(void *x)
 {
 	return __virt_to_bus((unsigned long)x);
diff --git a/arch/arm/mach-aaec2000/include/mach/memory.h b/arch/arm/mach-aaec2000/include/mach/memory.h
index 56ae900..c008225 100644
--- a/arch/arm/mach-aaec2000/include/mach/memory.h
+++ b/arch/arm/mach-aaec2000/include/mach/memory.h
@@ -14,9 +14,6 @@
 
 #define PHYS_OFFSET	UL(0xf0000000)
 
-#define __virt_to_bus(x)	__virt_to_phys(x)
-#define __bus_to_virt(x)	__phys_to_virt(x)
-
 /*
  * The nodes are the followings:
  *
diff --git a/arch/arm/mach-at91/include/mach/memory.h b/arch/arm/mach-at91/include/mach/memory.h
index 9dd1b8c..14f4ef4 100644
--- a/arch/arm/mach-at91/include/mach/memory.h
+++ b/arch/arm/mach-at91/include/mach/memory.h
@@ -25,15 +25,4 @@
 
 #define PHYS_OFFSET	(AT91_SDRAM_BASE)
 
-
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *              address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *              to an address that the kernel can use.
- */
-#define __virt_to_bus(x) __virt_to_phys(x)
-#define __bus_to_virt(x) __phys_to_virt(x)
-
 #endif
diff --git a/arch/arm/mach-clps711x/include/mach/memory.h b/arch/arm/mach-clps711x/include/mach/memory.h
index 98ec30c..e522b20 100644
--- a/arch/arm/mach-clps711x/include/mach/memory.h
+++ b/arch/arm/mach-clps711x/include/mach/memory.h
@@ -26,25 +26,7 @@
  */
 #define PHYS_OFFSET	UL(0xc0000000)
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *              address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *              to an address that the kernel can use.
- */
-
-#if defined(CONFIG_ARCH_CDB89712)
-
-#define __virt_to_bus(x)	(x)
-#define __bus_to_virt(x)	(x)
-
-#elif defined (CONFIG_ARCH_AUTCPU12)
-
-#define __virt_to_bus(x)	(x)
-#define __bus_to_virt(x)	(x)
-
-#else
+#if !defined(CONFIG_ARCH_CDB89712) && !defined (CONFIG_ARCH_AUTCPU12)
 
 #define __virt_to_bus(x)	((x) - PAGE_OFFSET)
 #define __bus_to_virt(x)	((x) + PAGE_OFFSET)
diff --git a/arch/arm/mach-clps7500/include/mach/memory.h b/arch/arm/mach-clps7500/include/mach/memory.h
index 87b32db..05ea76b 100644
--- a/arch/arm/mach-clps7500/include/mach/memory.h
+++ b/arch/arm/mach-clps7500/include/mach/memory.h
@@ -20,13 +20,6 @@
 #define PHYS_OFFSET	UL(0x10000000)
 
 /*
- * These are exactly the same on the RiscPC as the
- * physical memory view.
- */
-#define __virt_to_bus(x) __virt_to_phys(x)
-#define __bus_to_virt(x) __phys_to_virt(x)
-
-/*
  * Cache flushing area - ROM
  */
 #define FLUSH_BASE_PHYS		0x00000000
diff --git a/arch/arm/mach-davinci/include/mach/memory.h b/arch/arm/mach-davinci/include/mach/memory.h
index dd1625c..3a33533 100644
--- a/arch/arm/mach-davinci/include/mach/memory.h
+++ b/arch/arm/mach-davinci/include/mach/memory.h
@@ -55,10 +55,4 @@
 
 #endif
 
-/*
- * Bus address is physical address
- */
-#define __virt_to_bus(x)	__virt_to_phys(x)
-#define __bus_to_virt(x)	__phys_to_virt(x)
-
 #endif /* __ASM_ARCH_MEMORY_H */
diff --git a/arch/arm/mach-ebsa110/include/mach/memory.h b/arch/arm/mach-ebsa110/include/mach/memory.h
index eea4b75..0ca66d0 100644
--- a/arch/arm/mach-ebsa110/include/mach/memory.h
+++ b/arch/arm/mach-ebsa110/include/mach/memory.h
@@ -22,13 +22,6 @@
 #define PHYS_OFFSET	UL(0x00000000)
 
 /*
- * We keep this 1:1 so that we don't interfere
- * with the PCMCIA memory regions
- */
-#define __virt_to_bus(x)	(x)
-#define __bus_to_virt(x)	(x)
-
-/*
  * Cache flushing area - SRAM
  */
 #define FLUSH_BASE_PHYS		0x40000000
diff --git a/arch/arm/mach-ep93xx/include/mach/memory.h b/arch/arm/mach-ep93xx/include/mach/memory.h
index f1b6335..5c80c3c 100644
--- a/arch/arm/mach-ep93xx/include/mach/memory.h
+++ b/arch/arm/mach-ep93xx/include/mach/memory.h
@@ -7,8 +7,4 @@
 
 #define PHYS_OFFSET		UL(0x00000000)
 
-#define __bus_to_virt(x)	__phys_to_virt(x)
-#define __virt_to_bus(x)	__virt_to_phys(x)
-
-
 #endif
diff --git a/arch/arm/mach-footbridge/include/mach/memory.h b/arch/arm/mach-footbridge/include/mach/memory.h
index 6ae2f1a..cb16e59 100644
--- a/arch/arm/mach-footbridge/include/mach/memory.h
+++ b/arch/arm/mach-footbridge/include/mach/memory.h
@@ -30,9 +30,18 @@
 extern unsigned long __virt_to_bus(unsigned long);
 extern unsigned long __bus_to_virt(unsigned long);
 #endif
+#define __virt_to_bus	__virt_to_bus
+#define __bus_to_virt	__bus_to_virt
 
 #elif defined(CONFIG_FOOTBRIDGE_HOST)
 
+/*
+ * The footbridge is programmed to expose the system RAM at the corresponding
+ * address.  So, if PAGE_OFFSET is 0xc0000000, RAM appears at 0xe0000000.
+ * If 0x80000000, then its exposed at 0xa0000000 on the bus. etc.
+ * The only requirement is that the RAM isn't placed at bus address 0 which
+ * would clash with VGA cards.
+ */
 #define __virt_to_bus(x)	((x) - 0xe0000000)
 #define __bus_to_virt(x)	((x) + 0xe0000000)
 
diff --git a/arch/arm/mach-h720x/include/mach/memory.h b/arch/arm/mach-h720x/include/mach/memory.h
index cb26f49..83a2fa0 100644
--- a/arch/arm/mach-h720x/include/mach/memory.h
+++ b/arch/arm/mach-h720x/include/mach/memory.h
@@ -7,23 +7,6 @@
 #ifndef __ASM_ARCH_MEMORY_H
 #define __ASM_ARCH_MEMORY_H
 
-/*
- * Page offset:
- *    ( 0xc0000000UL )
- */
 #define PHYS_OFFSET	UL(0x40000000)
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *              address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *              to an address that the kernel can use.
- *
- * There is something to do here later !, Mar 2000, Jungjun Kim
- */
-
-#define __virt_to_bus(x)	__virt_to_phys(x)
-#define __bus_to_virt(x)	__phys_to_virt(x)
-
 #endif
diff --git a/arch/arm/mach-imx/include/mach/memory.h b/arch/arm/mach-imx/include/mach/memory.h
index 5c45306..a93df7c 100644
--- a/arch/arm/mach-imx/include/mach/memory.h
+++ b/arch/arm/mach-imx/include/mach/memory.h
@@ -23,14 +23,4 @@
 
 #define PHYS_OFFSET	UL(0x08000000)
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *              address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *              to an address that the kernel can use.
- */
-#define __virt_to_bus(x)	(x - PAGE_OFFSET + PHYS_OFFSET)
-#define __bus_to_virt(x)	(x - PHYS_OFFSET + PAGE_OFFSET)
-
 #endif
diff --git a/arch/arm/mach-integrator/include/mach/memory.h b/arch/arm/mach-integrator/include/mach/memory.h
index be7e63c..30d41d0 100644
--- a/arch/arm/mach-integrator/include/mach/memory.h
+++ b/arch/arm/mach-integrator/include/mach/memory.h
@@ -24,15 +24,8 @@
  * Physical DRAM offset.
  */
 #define PHYS_OFFSET	UL(0x00000000)
-#define BUS_OFFSET	UL(0x80000000)
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *              address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *              to an address that the kernel can use.
- */
+#define BUS_OFFSET	UL(0x80000000)
 #define __virt_to_bus(x)	(x - PAGE_OFFSET + BUS_OFFSET)
 #define __bus_to_virt(x)	(x - BUS_OFFSET + PAGE_OFFSET)
 
diff --git a/arch/arm/mach-iop13xx/include/mach/memory.h b/arch/arm/mach-iop13xx/include/mach/memory.h
index b82602d..e012bf1 100644
--- a/arch/arm/mach-iop13xx/include/mach/memory.h
+++ b/arch/arm/mach-iop13xx/include/mach/memory.h
@@ -16,18 +16,6 @@
 #define IOP13XX_PMMR_P_START (IOP13XX_PMMR_PHYS_MEM_BASE)
 #define IOP13XX_PMMR_P_END   (IOP13XX_PMMR_PHYS_MEM_BASE + IOP13XX_PMMR_SIZE)
 
-/*
- * Virtual view <-> PCI DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *		address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *		to an address that the kernel can use.
- */
-
-/* RAM has 1:1 mapping on the PCIe/x Busses */
-#define __virt_to_bus(x)	(__virt_to_phys(x))
-#define __bus_to_virt(x)	(__phys_to_virt(x))
-
 static inline dma_addr_t __virt_to_lbus(unsigned long x)
 {
 	return x + IOP13XX_PMMR_PHYS_MEM_BASE - IOP13XX_PMMR_VIRT_MEM_BASE;
@@ -55,7 +43,7 @@
 		if (is_lbus_device(dev) && __is_lbus_dma(__dma))	\
 			__virt = __lbus_to_virt(__dma);			\
 		else							\
-			__virt = __bus_to_virt(__dma);			\
+			__virt = __phys_to_virt(__dma);			\
 		(void *)__virt;						\
 	})
 
@@ -66,7 +54,7 @@
 		if (is_lbus_device(dev) && __is_lbus_virt(__virt))	\
 			__dma = __virt_to_lbus(__virt);			\
 		else							\
-			__dma = __virt_to_bus(__virt);			\
+			__dma = __virt_to_phys(__virt);			\
 		__dma;							\
 	})
 
diff --git a/arch/arm/mach-iop32x/include/mach/memory.h b/arch/arm/mach-iop32x/include/mach/memory.h
index 42cd4bf..61c7bdb 100644
--- a/arch/arm/mach-iop32x/include/mach/memory.h
+++ b/arch/arm/mach-iop32x/include/mach/memory.h
@@ -12,15 +12,4 @@
  */
 #define PHYS_OFFSET	UL(0xa0000000)
 
-/*
- * Virtual view <-> PCI DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *		address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *		to an address that the kernel can use.
- */
-#define __virt_to_bus(x)	(__virt_to_phys(x))
-#define __bus_to_virt(x)	(__phys_to_virt(x))
-
-
 #endif
diff --git a/arch/arm/mach-iop33x/include/mach/memory.h b/arch/arm/mach-iop33x/include/mach/memory.h
index 2cef0bb..c46c6ba 100644
--- a/arch/arm/mach-iop33x/include/mach/memory.h
+++ b/arch/arm/mach-iop33x/include/mach/memory.h
@@ -12,15 +12,4 @@
  */
 #define PHYS_OFFSET	UL(0x00000000)
 
-/*
- * Virtual view <-> PCI DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *		address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *		to an address that the kernel can use.
- */
-#define __virt_to_bus(x)	(__virt_to_phys(x))
-#define __bus_to_virt(x)	(__phys_to_virt(x))
-
-
 #endif
diff --git a/arch/arm/mach-ixp2000/include/mach/memory.h b/arch/arm/mach-ixp2000/include/mach/memory.h
index 241529a..aee7eb8 100644
--- a/arch/arm/mach-ixp2000/include/mach/memory.h
+++ b/arch/arm/mach-ixp2000/include/mach/memory.h
@@ -15,13 +15,6 @@
 
 #define PHYS_OFFSET	UL(0x00000000)
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *		address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *		to an address that the kernel can use.
- */
 #include <mach/ixp2000-regs.h>
 
 #define __virt_to_bus(v) \
diff --git a/arch/arm/mach-ixp23xx/include/mach/memory.h b/arch/arm/mach-ixp23xx/include/mach/memory.h
index 9d40115..fdd1387 100644
--- a/arch/arm/mach-ixp23xx/include/mach/memory.h
+++ b/arch/arm/mach-ixp23xx/include/mach/memory.h
@@ -19,16 +19,6 @@
  */
 #define PHYS_OFFSET		(0x00000000)
 
-
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *		address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *		to an address that the kernel can use.
- */
-#ifndef __ASSEMBLY__
-
 #define __virt_to_bus(v)						\
 	({ unsigned int ret;						\
 	ret = ((__virt_to_phys(v) - 0x00000000) +			\
@@ -43,6 +33,3 @@
 #define arch_is_coherent()	1
 
 #endif
-
-
-#endif
diff --git a/arch/arm/mach-ixp4xx/include/mach/memory.h b/arch/arm/mach-ixp4xx/include/mach/memory.h
index c4d2830..2e481db 100644
--- a/arch/arm/mach-ixp4xx/include/mach/memory.h
+++ b/arch/arm/mach-ixp4xx/include/mach/memory.h
@@ -25,16 +25,4 @@
 
 #endif
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *		address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *		to an address that the kernel can use.
- *
- * These are dummies for now.
- */
-#define __virt_to_bus(x)	 __virt_to_phys(x)
-#define __bus_to_virt(x)	 __phys_to_virt(x)
-
 #endif
diff --git a/arch/arm/mach-kirkwood/include/mach/memory.h b/arch/arm/mach-kirkwood/include/mach/memory.h
index b5fb34b..45431e1 100644
--- a/arch/arm/mach-kirkwood/include/mach/memory.h
+++ b/arch/arm/mach-kirkwood/include/mach/memory.h
@@ -7,8 +7,4 @@
 
 #define PHYS_OFFSET		UL(0x00000000)
 
-#define __virt_to_bus(x)	__virt_to_phys(x)
-#define __bus_to_virt(x)	__phys_to_virt(x)
-
-
 #endif
diff --git a/arch/arm/mach-ks8695/include/mach/memory.h b/arch/arm/mach-ks8695/include/mach/memory.h
index 8fbc4c7..6d5887c 100644
--- a/arch/arm/mach-ks8695/include/mach/memory.h
+++ b/arch/arm/mach-ks8695/include/mach/memory.h
@@ -37,11 +37,6 @@
 					(dma_addr_t)__virt_to_phys(x) : (dma_addr_t)__virt_to_bus(x); })
 #define __arch_page_to_dma(dev, x)	__arch_virt_to_dma(dev, page_address(x))
 
-#else
-
-#define __virt_to_bus(x)	__virt_to_phys(x)
-#define __bus_to_virt(x)	__phys_to_virt(x)
-
 #endif
 
 #endif
diff --git a/arch/arm/mach-l7200/include/mach/memory.h b/arch/arm/mach-l7200/include/mach/memory.h
index f338cf3..9fb40ed 100644
--- a/arch/arm/mach-l7200/include/mach/memory.h
+++ b/arch/arm/mach-l7200/include/mach/memory.h
@@ -17,9 +17,6 @@
  */
 #define PHYS_OFFSET     UL(0xf0000000)
 
-#define __virt_to_bus(x) __virt_to_phys(x)
-#define __bus_to_virt(x) __phys_to_virt(x)
-
 /*
  * Cache flushing area - ROM
  */
diff --git a/arch/arm/mach-lh7a40x/include/mach/memory.h b/arch/arm/mach-lh7a40x/include/mach/memory.h
index 1da14ff..189d20e 100644
--- a/arch/arm/mach-lh7a40x/include/mach/memory.h
+++ b/arch/arm/mach-lh7a40x/include/mach/memory.h
@@ -19,16 +19,6 @@
  */
 #define PHYS_OFFSET	UL(0xc0000000)
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *		address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *		to an address that the kernel can use.
- */
-#define __virt_to_bus(x)	 __virt_to_phys(x)
-#define __bus_to_virt(x)	 __phys_to_virt(x)
-
 #ifdef CONFIG_DISCONTIGMEM
 
 /*
diff --git a/arch/arm/mach-loki/include/mach/memory.h b/arch/arm/mach-loki/include/mach/memory.h
index a39533a..2ed7e6e7 100644
--- a/arch/arm/mach-loki/include/mach/memory.h
+++ b/arch/arm/mach-loki/include/mach/memory.h
@@ -7,8 +7,4 @@
 
 #define PHYS_OFFSET		UL(0x00000000)
 
-#define __virt_to_bus(x)	__virt_to_phys(x)
-#define __bus_to_virt(x)	__phys_to_virt(x)
-
-
 #endif
diff --git a/arch/arm/mach-msm/include/mach/memory.h b/arch/arm/mach-msm/include/mach/memory.h
index 63fd47f..f4698ba 100644
--- a/arch/arm/mach-msm/include/mach/memory.h
+++ b/arch/arm/mach-msm/include/mach/memory.h
@@ -19,9 +19,5 @@
 /* physical offset of RAM */
 #define PHYS_OFFSET		UL(0x10000000)
 
-/* bus address and physical addresses are identical */
-#define __virt_to_bus(x)	__virt_to_phys(x)
-#define __bus_to_virt(x)	__phys_to_virt(x)
-
 #endif
 
diff --git a/arch/arm/mach-mv78xx0/include/mach/memory.h b/arch/arm/mach-mv78xx0/include/mach/memory.h
index 9e47a14..e663042 100644
--- a/arch/arm/mach-mv78xx0/include/mach/memory.h
+++ b/arch/arm/mach-mv78xx0/include/mach/memory.h
@@ -7,8 +7,4 @@
 
 #define PHYS_OFFSET		UL(0x00000000)
 
-#define __virt_to_bus(x)	__virt_to_phys(x)
-#define __bus_to_virt(x)	__phys_to_virt(x)
-
-
 #endif
diff --git a/arch/arm/mach-netx/include/mach/memory.h b/arch/arm/mach-netx/include/mach/memory.h
index 53745a1..9a363f2 100644
--- a/arch/arm/mach-netx/include/mach/memory.h
+++ b/arch/arm/mach-netx/include/mach/memory.h
@@ -22,15 +22,5 @@
 
 #define PHYS_OFFSET UL(0x80000000)
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *              address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *              to an address that the kernel can use.
- */
-#define __virt_to_bus(x)         __virt_to_phys(x)
-#define __bus_to_virt(x)         __phys_to_virt(x)
-
 #endif
 
diff --git a/arch/arm/mach-ns9xxx/include/mach/memory.h b/arch/arm/mach-ns9xxx/include/mach/memory.h
index 649ee62..6107193 100644
--- a/arch/arm/mach-ns9xxx/include/mach/memory.h
+++ b/arch/arm/mach-ns9xxx/include/mach/memory.h
@@ -21,7 +21,4 @@
 
 #define PHYS_OFFSET	UL(0x00000000)
 
-#define __virt_to_bus(x) __virt_to_phys(x)
-#define __bus_to_virt(x) __phys_to_virt(x)
-
 #endif
diff --git a/arch/arm/mach-orion5x/include/mach/memory.h b/arch/arm/mach-orion5x/include/mach/memory.h
index 54dd76b..52a2955 100644
--- a/arch/arm/mach-orion5x/include/mach/memory.h
+++ b/arch/arm/mach-orion5x/include/mach/memory.h
@@ -9,8 +9,4 @@
 
 #define PHYS_OFFSET	UL(0x00000000)
 
-#define __virt_to_bus(x)	__virt_to_phys(x)
-#define __bus_to_virt(x)	__phys_to_virt(x)
-
-
 #endif
diff --git a/arch/arm/mach-pnx4008/include/mach/memory.h b/arch/arm/mach-pnx4008/include/mach/memory.h
index 5789a2d..b38d50c 100644
--- a/arch/arm/mach-pnx4008/include/mach/memory.h
+++ b/arch/arm/mach-pnx4008/include/mach/memory.h
@@ -18,7 +18,4 @@
  */
 #define PHYS_OFFSET     (0x80000000)
 
-#define __virt_to_bus(x) ((x) - PAGE_OFFSET + PHYS_OFFSET)
-#define __bus_to_virt(x) ((x) + PAGE_OFFSET - PHYS_OFFSET)
-
 #endif
diff --git a/arch/arm/mach-pxa/include/mach/memory.h b/arch/arm/mach-pxa/include/mach/memory.h
index 59aef89..eac491c 100644
--- a/arch/arm/mach-pxa/include/mach/memory.h
+++ b/arch/arm/mach-pxa/include/mach/memory.h
@@ -18,16 +18,6 @@
 #define PHYS_OFFSET	UL(0xa0000000)
 
 /*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *		address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *		to an address that the kernel can use.
- */
-#define __virt_to_bus(x)	 __virt_to_phys(x)
-#define __bus_to_virt(x)	 __phys_to_virt(x)
-
-/*
  * The nodes are matched with the physical SDRAM banks as follows:
  *
  * 	node 0:  0xa0000000-0xa3ffffff	-->  0xc0000000-0xc3ffffff
diff --git a/arch/arm/mach-realview/include/mach/memory.h b/arch/arm/mach-realview/include/mach/memory.h
index 0e67348..65a0742 100644
--- a/arch/arm/mach-realview/include/mach/memory.h
+++ b/arch/arm/mach-realview/include/mach/memory.h
@@ -25,14 +25,4 @@
  */
 #define PHYS_OFFSET		UL(0x00000000)
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *              address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *              to an address that the kernel can use.
- */
-#define __virt_to_bus(x)	((x) - PAGE_OFFSET)
-#define __bus_to_virt(x)	((x) + PAGE_OFFSET)
-
 #endif
diff --git a/arch/arm/mach-rpc/include/mach/memory.h b/arch/arm/mach-rpc/include/mach/memory.h
index 9bf7e43..78191bf 100644
--- a/arch/arm/mach-rpc/include/mach/memory.h
+++ b/arch/arm/mach-rpc/include/mach/memory.h
@@ -24,13 +24,6 @@
 #define PHYS_OFFSET	UL(0x10000000)
 
 /*
- * These are exactly the same on the RiscPC as the
- * physical memory view.
- */
-#define __virt_to_bus(x) __virt_to_phys(x)
-#define __bus_to_virt(x) __phys_to_virt(x)
-
-/*
  * Cache flushing area - ROM
  */
 #define FLUSH_BASE_PHYS		0x00000000
diff --git a/arch/arm/mach-s3c2400/include/mach/memory.h b/arch/arm/mach-s3c2400/include/mach/memory.h
index 8f4878e..cf5901f 100644
--- a/arch/arm/mach-s3c2400/include/mach/memory.h
+++ b/arch/arm/mach-s3c2400/include/mach/memory.h
@@ -17,7 +17,4 @@
 
 #define PHYS_OFFSET	UL(0x0C000000)
 
-#define __virt_to_bus(x) __virt_to_phys(x)
-#define __bus_to_virt(x) __phys_to_virt(x)
-
 #endif
diff --git a/arch/arm/mach-s3c2410/include/mach/memory.h b/arch/arm/mach-s3c2410/include/mach/memory.h
index 9378262..6f1e587 100644
--- a/arch/arm/mach-s3c2410/include/mach/memory.h
+++ b/arch/arm/mach-s3c2410/include/mach/memory.h
@@ -13,7 +13,4 @@
 
 #define PHYS_OFFSET	UL(0x30000000)
 
-#define __virt_to_bus(x) __virt_to_phys(x)
-#define __bus_to_virt(x) __phys_to_virt(x)
-
 #endif
diff --git a/arch/arm/mach-sa1100/include/mach/memory.h b/arch/arm/mach-sa1100/include/mach/memory.h
index 1c127b6..6984034 100644
--- a/arch/arm/mach-sa1100/include/mach/memory.h
+++ b/arch/arm/mach-sa1100/include/mach/memory.h
@@ -28,18 +28,6 @@
 #endif
 
 /*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *		address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *		to an address that the kernel can use.
- *
- * On the SA1100, bus addresses are equivalent to physical addresses.
- */
-#define __virt_to_bus(x)	 __virt_to_phys(x)
-#define __bus_to_virt(x)	 __phys_to_virt(x)
-
-/*
  * Because of the wide memory address space between physical RAM banks on the
  * SA1100, it's much convenient to use Linux's SparseMEM support to implement
  * our memory map representation.  Assuming all memory nodes have equal access
diff --git a/arch/arm/mach-shark/include/mach/memory.h b/arch/arm/mach-shark/include/mach/memory.h
index b7874ad..d00c05e 100644
--- a/arch/arm/mach-shark/include/mach/memory.h
+++ b/arch/arm/mach-shark/include/mach/memory.h
@@ -36,9 +36,6 @@
 
 #endif
 
-#define __virt_to_bus(x)	__virt_to_phys(x)
-#define __bus_to_virt(x)	__phys_to_virt(x)
-
 /*
  * Cache flushing area
  */
diff --git a/arch/arm/mach-versatile/include/mach/memory.h b/arch/arm/mach-versatile/include/mach/memory.h
index b6315c0..79aeab8 100644
--- a/arch/arm/mach-versatile/include/mach/memory.h
+++ b/arch/arm/mach-versatile/include/mach/memory.h
@@ -25,14 +25,4 @@
  */
 #define PHYS_OFFSET	UL(0x00000000)
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *              address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *              to an address that the kernel can use.
- */
-#define __virt_to_bus(x)	((x) - PAGE_OFFSET)
-#define __bus_to_virt(x)	((x) + PAGE_OFFSET)
-
 #endif
diff --git a/arch/arm/plat-mxc/include/mach/memory.h b/arch/arm/plat-mxc/include/mach/memory.h
index d7a8d3e..203688e 100644
--- a/arch/arm/plat-mxc/include/mach/memory.h
+++ b/arch/arm/plat-mxc/include/mach/memory.h
@@ -13,17 +13,4 @@
 
 #include <mach/hardware.h>
 
-/*
- * Virtual view <-> DMA view memory address translations
- * This macro is used to translate the virtual address to an address
- * suitable to be passed to set_dma_addr()
- */
-#define __virt_to_bus(a)	__virt_to_phys(a)
-
-/*
- * Used to convert an address for DMA operations to an address that the
- * kernel can use.
- */
-#define __bus_to_virt(a)	__phys_to_virt(a)
-
 #endif /* __ASM_ARCH_MXC_MEMORY_H__ */
diff --git a/arch/arm/plat-omap/include/mach/memory.h b/arch/arm/plat-omap/include/mach/memory.h
index d40cac6..211c9f6 100644
--- a/arch/arm/plat-omap/include/mach/memory.h
+++ b/arch/arm/plat-omap/include/mach/memory.h
@@ -43,18 +43,7 @@
 #endif
 
 /*
- * Conversion between SDRAM and fake PCI bus, used by USB
- * NOTE: Physical address must be converted to Local Bus address
- *	 on OMAP-1510 only
- */
-
-/*
  * Bus address is physical address, except for OMAP-1510 Local Bus.
- */
-#define __virt_to_bus(x)	__virt_to_phys(x)
-#define __bus_to_virt(x)	__phys_to_virt(x)
-
-/*
  * OMAP-1510 bus address is translated into a Local Bus address if the
  * OMAP bus type is lbus. We do the address translation based on the
  * device overriding the defaults used in the dma-mapping API.
@@ -74,16 +63,16 @@
 
 #define __arch_page_to_dma(dev, page)	({is_lbus_device(dev) ? \
 					(dma_addr_t)virt_to_lbus(page_address(page)) : \
-					(dma_addr_t)__virt_to_bus(page_address(page));})
+					(dma_addr_t)__virt_to_phys(page_address(page));})
 
 #define __arch_dma_to_virt(dev, addr)	({ (void *) (is_lbus_device(dev) ? \
 						lbus_to_virt(addr) : \
-						__bus_to_virt(addr)); })
+						__phys_to_virt(addr)); })
 
 #define __arch_virt_to_dma(dev, addr)	({ unsigned long __addr = (unsigned long)(addr); \
 					   (dma_addr_t) (is_lbus_device(dev) ? \
 						virt_to_lbus(__addr) : \
-						__virt_to_bus(__addr)); })
+						__virt_to_phys(__addr)); })
 
 #endif	/* CONFIG_ARCH_OMAP15XX */