diff --git a/include/asm-blackfin/io.h b/include/asm-blackfin/io.h
index 3f48f8f..525179b 100644
--- a/include/asm-blackfin/io.h
+++ b/include/asm-blackfin/io.h
@@ -115,21 +115,21 @@
 
 #ifndef __ASSEMBLY__
 
-extern void outsb(const void __iomem *port, const void *addr, unsigned short count);
-extern void outsw(const void __iomem *port, const void *addr, unsigned short count);
-extern void outsl(const void __iomem *port, const void *addr, unsigned short count);
+extern void outsb(unsigned long port, const void *addr, unsigned long count);
+extern void outsw(unsigned long port, const void *addr, unsigned long count);
+extern void outsl(unsigned long port, const void *addr, unsigned long count);
 
-extern void insb(const void __iomem *port, void *addr, unsigned short count);
-extern void insw(const void __iomem *port, void *addr, unsigned short count);
-extern void insl(const void __iomem *port, void *addr, unsigned short count);
+extern void insb(unsigned long port, void *addr, unsigned long count);
+extern void insw(unsigned long port, void *addr, unsigned long count);
+extern void insl(unsigned long port, void *addr, unsigned long count);
 
-extern void dma_outsb(const void __iomem *port, const void *addr, unsigned short count);
-extern void dma_outsw(const void __iomem *port, const void *addr, unsigned short count);
-extern void dma_outsl(const void __iomem *port, const void *addr, unsigned short count);
+extern void dma_outsb(unsigned long port, const void *addr, unsigned short count);
+extern void dma_outsw(unsigned long port, const void *addr, unsigned short count);
+extern void dma_outsl(unsigned long port, const void *addr, unsigned short count);
 
-extern void dma_insb(const void __iomem *port, void *addr, unsigned short count);
-extern void dma_insw(const void __iomem *port, void *addr, unsigned short count);
-extern void dma_insl(const void __iomem *port, void *addr, unsigned short count);
+extern void dma_insb(unsigned long port, void *addr, unsigned short count);
+extern void dma_insw(unsigned long port, void *addr, unsigned short count);
+extern void dma_insl(unsigned long port, void *addr, unsigned short count);
 
 /*
  * Map some physical address range into the kernel address space.