diff --git a/include/asm-m68k/io.h b/include/asm-m68k/io.h
index 6bb8b0d..dcfaa35 100644
--- a/include/asm-m68k/io.h
+++ b/include/asm-m68k/io.h
@@ -24,6 +24,7 @@
 #ifdef __KERNEL__
 
 #include <linux/config.h>
+#include <linux/compiler.h>
 #include <asm/raw_io.h>
 #include <asm/virtconvert.h>
 
@@ -120,68 +121,68 @@
  * be compiled in so the case statement will be optimised away
  */
 
-static inline u8 *isa_itb(unsigned long addr)
+static inline u8 __iomem *isa_itb(unsigned long addr)
 {
   switch(ISA_TYPE)
     {
 #ifdef CONFIG_Q40
-    case Q40_ISA: return (u8 *)Q40_ISA_IO_B(addr);
+    case Q40_ISA: return (u8 __iomem *)Q40_ISA_IO_B(addr);
 #endif
 #ifdef CONFIG_GG2
-    case GG2_ISA: return (u8 *)GG2_ISA_IO_B(addr);
+    case GG2_ISA: return (u8 __iomem *)GG2_ISA_IO_B(addr);
 #endif
 #ifdef CONFIG_AMIGA_PCMCIA
-    case AG_ISA: return (u8 *)AG_ISA_IO_B(addr);
+    case AG_ISA: return (u8 __iomem *)AG_ISA_IO_B(addr);
 #endif
-    default: return 0; /* avoid warnings, just in case */
+    default: return NULL; /* avoid warnings, just in case */
     }
 }
-static inline u16 *isa_itw(unsigned long addr)
+static inline u16 __iomem *isa_itw(unsigned long addr)
 {
   switch(ISA_TYPE)
     {
 #ifdef CONFIG_Q40
-    case Q40_ISA: return (u16 *)Q40_ISA_IO_W(addr);
+    case Q40_ISA: return (u16 __iomem *)Q40_ISA_IO_W(addr);
 #endif
 #ifdef CONFIG_GG2
-    case GG2_ISA: return (u16 *)GG2_ISA_IO_W(addr);
+    case GG2_ISA: return (u16 __iomem *)GG2_ISA_IO_W(addr);
 #endif
 #ifdef CONFIG_AMIGA_PCMCIA
-    case AG_ISA: return (u16 *)AG_ISA_IO_W(addr);
+    case AG_ISA: return (u16 __iomem *)AG_ISA_IO_W(addr);
 #endif
-    default: return 0; /* avoid warnings, just in case */
+    default: return NULL; /* avoid warnings, just in case */
     }
 }
-static inline u8 *isa_mtb(unsigned long addr)
+static inline u8 __iomem *isa_mtb(unsigned long addr)
 {
   switch(ISA_TYPE)
     {
 #ifdef CONFIG_Q40
-    case Q40_ISA: return (u8 *)Q40_ISA_MEM_B(addr);
+    case Q40_ISA: return (u8 __iomem *)Q40_ISA_MEM_B(addr);
 #endif
 #ifdef CONFIG_GG2
-    case GG2_ISA: return (u8 *)GG2_ISA_MEM_B(addr);
+    case GG2_ISA: return (u8 __iomem *)GG2_ISA_MEM_B(addr);
 #endif
 #ifdef CONFIG_AMIGA_PCMCIA
-    case AG_ISA: return (u8 *)addr;
+    case AG_ISA: return (u8 __iomem *)addr;
 #endif
-    default: return 0; /* avoid warnings, just in case */
+    default: return NULL; /* avoid warnings, just in case */
     }
 }
-static inline u16 *isa_mtw(unsigned long addr)
+static inline u16 __iomem *isa_mtw(unsigned long addr)
 {
   switch(ISA_TYPE)
     {
 #ifdef CONFIG_Q40
-    case Q40_ISA: return (u16 *)Q40_ISA_MEM_W(addr);
+    case Q40_ISA: return (u16 __iomem *)Q40_ISA_MEM_W(addr);
 #endif
 #ifdef CONFIG_GG2
-    case GG2_ISA: return (u16 *)GG2_ISA_MEM_W(addr);
+    case GG2_ISA: return (u16 __iomem *)GG2_ISA_MEM_W(addr);
 #endif
 #ifdef CONFIG_AMIGA_PCMCIA
-    case AG_ISA: return (u16 *)addr;
+    case AG_ISA: return (u16 __iomem *)addr;
 #endif
-    default: return 0; /* avoid warnings, just in case */
+    default: return NULL; /* avoid warnings, just in case */
     }
 }
 
@@ -326,20 +327,20 @@
 
 #define mmiowb()
 
-static inline void *ioremap(unsigned long physaddr, unsigned long size)
+static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
 {
 	return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
 }
-static inline void *ioremap_nocache(unsigned long physaddr, unsigned long size)
+static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
 {
 	return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
 }
-static inline void *ioremap_writethrough(unsigned long physaddr,
+static inline void __iomem *ioremap_writethrough(unsigned long physaddr,
 					 unsigned long size)
 {
 	return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
 }
-static inline void *ioremap_fullcache(unsigned long physaddr,
+static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
 				      unsigned long size)
 {
 	return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
diff --git a/include/asm-m68k/raw_io.h b/include/asm-m68k/raw_io.h
index 041f0a8..5439bca 100644
--- a/include/asm-m68k/raw_io.h
+++ b/include/asm-m68k/raw_io.h
@@ -19,9 +19,9 @@
 #define IOMAP_NOCACHE_NONSER		2
 #define IOMAP_WRITETHROUGH		3
 
-extern void iounmap(void *addr);
+extern void iounmap(void __iomem *addr);
 
-extern void *__ioremap(unsigned long physaddr, unsigned long size,
+extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
 		       int cacheflag);
 extern void __iounmap(void *addr, unsigned long size);
 
@@ -30,21 +30,21 @@
  * two accesses to memory, which may be undesirable for some devices.
  */
 #define in_8(addr) \
-    ({ u8 __v = (*(volatile u8 *) (addr)); __v; })
+    ({ u8 __v = (*(__force volatile u8 *) (addr)); __v; })
 #define in_be16(addr) \
-    ({ u16 __v = (*(volatile u16 *) (addr)); __v; })
+    ({ u16 __v = (*(__force volatile u16 *) (addr)); __v; })
 #define in_be32(addr) \
-    ({ u32 __v = (*(volatile u32 *) (addr)); __v; })
+    ({ u32 __v = (*(__force volatile u32 *) (addr)); __v; })
 #define in_le16(addr) \
-    ({ u16 __v = le16_to_cpu(*(volatile u16 *) (addr)); __v; })
+    ({ u16 __v = le16_to_cpu(*(__force volatile u16 *) (addr)); __v; })
 #define in_le32(addr) \
-    ({ u32 __v = le32_to_cpu(*(volatile u32 *) (addr)); __v; })
+    ({ u32 __v = le32_to_cpu(*(__force volatile u32 *) (addr)); __v; })
 
-#define out_8(addr,b) (void)((*(volatile u8 *) (addr)) = (b))
-#define out_be16(addr,w) (void)((*(volatile u16 *) (addr)) = (w))
-#define out_be32(addr,l) (void)((*(volatile u32 *) (addr)) = (l))
-#define out_le16(addr,w) (void)((*(volatile u16 *) (addr)) = cpu_to_le16(w))
-#define out_le32(addr,l) (void)((*(volatile u32 *) (addr)) = cpu_to_le32(l))
+#define out_8(addr,b) (void)((*(__force volatile u8 *) (addr)) = (b))
+#define out_be16(addr,w) (void)((*(__force volatile u16 *) (addr)) = (w))
+#define out_be32(addr,l) (void)((*(__force volatile u32 *) (addr)) = (l))
+#define out_le16(addr,w) (void)((*(__force volatile u16 *) (addr)) = cpu_to_le16(w))
+#define out_le32(addr,l) (void)((*(__force volatile u32 *) (addr)) = cpu_to_le32(l))
 
 #define raw_inb in_8
 #define raw_inw in_be16
@@ -54,7 +54,7 @@
 #define raw_outw(val,port) out_be16((port),(val))
 #define raw_outl(val,port) out_be32((port),(val))
 
-static inline void raw_insb(volatile u8 *port, u8 *buf, unsigned int len)
+static inline void raw_insb(volatile u8 __iomem *port, u8 *buf, unsigned int len)
 {
 	unsigned int i;
 
@@ -62,7 +62,7 @@
 		*buf++ = in_8(port);
 }
 
-static inline void raw_outsb(volatile u8 *port, const u8 *buf,
+static inline void raw_outsb(volatile u8 __iomem *port, const u8 *buf,
 			     unsigned int len)
 {
 	unsigned int i;
@@ -71,7 +71,7 @@
 		out_8(port, *buf++);
 }
 
-static inline void raw_insw(volatile u16 *port, u16 *buf, unsigned int nr)
+static inline void raw_insw(volatile u16 __iomem *port, u16 *buf, unsigned int nr)
 {
 	unsigned int tmp;
 
@@ -110,7 +110,7 @@
 	}
 }
 
-static inline void raw_outsw(volatile u16 *port, const u16 *buf,
+static inline void raw_outsw(volatile u16 __iomem *port, const u16 *buf,
 			     unsigned int nr)
 {
 	unsigned int tmp;
@@ -150,7 +150,7 @@
 	}
 }
 
-static inline void raw_insl(volatile u32 *port, u32 *buf, unsigned int nr)
+static inline void raw_insl(volatile u32 __iomem *port, u32 *buf, unsigned int nr)
 {
 	unsigned int tmp;
 
@@ -189,7 +189,7 @@
 	}
 }
 
-static inline void raw_outsl(volatile u32 *port, const u32 *buf,
+static inline void raw_outsl(volatile u32 __iomem *port, const u32 *buf,
 			     unsigned int nr)
 {
 	unsigned int tmp;
@@ -230,7 +230,7 @@
 }
 
 
-static inline void raw_insw_swapw(volatile u16 *port, u16 *buf,
+static inline void raw_insw_swapw(volatile u16 __iomem *port, u16 *buf,
 				  unsigned int nr)
 {
     if ((nr) % 8)
@@ -283,7 +283,7 @@
 		: "d0", "a0", "a1", "d6");
 }
 
-static inline void raw_outsw_swapw(volatile u16 *port, const u16 *buf,
+static inline void raw_outsw_swapw(volatile u16 __iomem *port, const u16 *buf,
 				   unsigned int nr)
 {
     if ((nr) % 8)
diff --git a/include/asm-m68k/zorro.h b/include/asm-m68k/zorro.h
index cf81658..5ce97c2 100644
--- a/include/asm-m68k/zorro.h
+++ b/include/asm-m68k/zorro.h
@@ -15,24 +15,24 @@
 #define z_memcpy_fromio(a,b,c)	memcpy((a),(void *)(b),(c))
 #define z_memcpy_toio(a,b,c)	memcpy((void *)(a),(b),(c))
 
-static inline void *z_remap_nocache_ser(unsigned long physaddr,
+static inline void __iomem *z_remap_nocache_ser(unsigned long physaddr,
 					unsigned long size)
 {
 	return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
 }
 
-static inline void *z_remap_nocache_nonser(unsigned long physaddr,
+static inline void __iomem *z_remap_nocache_nonser(unsigned long physaddr,
 					   unsigned long size)
 {
 	return __ioremap(physaddr, size, IOMAP_NOCACHE_NONSER);
 }
 
-static inline void *z_remap_writethrough(unsigned long physaddr,
+static inline void __iomem *z_remap_writethrough(unsigned long physaddr,
 					 unsigned long size)
 {
 	return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
 }
-static inline void *z_remap_fullcache(unsigned long physaddr,
+static inline void __iomem *z_remap_fullcache(unsigned long physaddr,
 				      unsigned long size)
 {
 	return __ioremap(physaddr, size, IOMAP_FULL_CACHING);