1 files changed, 9 insertions, 3 deletions

diff --git a/include/asm-arm/io.h b/include/asm-arm/io.h
index ae69db4a1010..fd0147e52dbb 100644
--- a/include/asm-arm/io.h
+++ b/include/asm-arm/io.h
@@ -42,9 +42,9 @@ extern void __raw_writesb(void __iomem *addr, const void *data, int bytelen);
 extern void __raw_writesw(void __iomem *addr, const void *data, int wordlen);
 extern void __raw_writesl(void __iomem *addr, const void *data, int longlen);
 
-extern void __raw_readsb(void __iomem *addr, void *data, int bytelen);
-extern void __raw_readsw(void __iomem *addr, void *data, int wordlen);
-extern void __raw_readsl(void __iomem *addr, void *data, int longlen);
+extern void __raw_readsb(const void __iomem *addr, void *data, int bytelen);
+extern void __raw_readsw(const void __iomem *addr, void *data, int wordlen);
+extern void __raw_readsl(const void __iomem *addr, void *data, int longlen);
 
 #define __raw_writeb(v,a)       (__chk_io_ptr(a), *(volatile unsigned char __force  *)(a) = (v))
 #define __raw_writew(v,a)       (__chk_io_ptr(a), *(volatile unsigned short __force *)(a) = (v))
@@ -56,7 +56,12 @@ extern void __raw_readsl(void __iomem *addr, void *data, int longlen);
 
 /*
  * Architecture ioremap implementation.
+ *
+ * __ioremap takes CPU physical address.
+ *
+ * __ioremap_pfn takes a Page Frame Number and an offset into that page
  */
+extern void __iomem * __ioremap_pfn(unsigned long, unsigned long, size_t, unsigned long);
 extern void __iomem * __ioremap(unsigned long, size_t, unsigned long);
 extern void __iounmap(void __iomem *addr);
 
@@ -261,6 +266,7 @@ out:
  *
  * ioremap takes a PCI memory address, as specified in
  * Documentation/IO-mapping.txt.
+ *
  */
 #ifndef __arch_ioremap
 #define ioremap(cookie,size)            __ioremap(cookie,size,0)