[IA64] Fix memcpy_fromio prototype

Remove one layer of indirection from memcpy_fromio/memcpy_toio/memset_io
and fix the prototypes to be const where appropriate.
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/lib/io.c

@@ -8,8 +8,7 @@
  * Copy data from IO memory space to "real" memory space.
  * This needs to be optimized.
  */
-void
-__ia64_memcpy_fromio (void *to, volatile void __iomem *from, long count)
+void memcpy_fromio(void *to, const volatile void __iomem *from, long count)
 {
 	char *dst = to;
 
@@ -18,30 +17,28 @@ __ia64_memcpy_fromio (void *to, volatile void __iomem *from, long count)
 		*dst++ = readb(from++);
 	}
 }
-EXPORT_SYMBOL(__ia64_memcpy_fromio);
+EXPORT_SYMBOL(memcpy_fromio);
 
 /*
  * Copy data from "real" memory space to IO memory space.
  * This needs to be optimized.
  */
-void
-__ia64_memcpy_toio (volatile void __iomem *to, void *from, long count)
+void memcpy_toio(volatile void __iomem *to, const void *from, long count)
 {
-	char *src = from;
+	const char *src = from;
 
 	while (count) {
 		count--;
 		writeb(*src++, to++);
 	}
 }
-EXPORT_SYMBOL(__ia64_memcpy_toio);
+EXPORT_SYMBOL(memcpy_toio);
 
 /*
  * "memset" on IO memory space.
  * This needs to be optimized.
  */
-void
-__ia64_memset_c_io (volatile void __iomem *dst, unsigned long c, long count)
+void memset_io(volatile void __iomem *dst, int c, long count)
 {
 	unsigned char ch = (char)(c & 0xff);
 
@@ -51,7 +48,7 @@ __ia64_memset_c_io (volatile void __iomem *dst, unsigned long c, long count)
 		dst++;
 	}
 }
-EXPORT_SYMBOL(__ia64_memset_c_io);
+EXPORT_SYMBOL(memset_io);
 
 #ifdef CONFIG_IA64_GENERIC
 

include/asm-ia64/io.h

@@ -447,14 +447,9 @@ iounmap (volatile void __iomem *addr)
 /*
  * String version of IO memory access ops:
  */
-extern void __ia64_memcpy_fromio (void *, volatile void __iomem *, long);
-extern void __ia64_memcpy_toio (volatile void __iomem *, void *, long);
-extern void __ia64_memset_c_io (volatile void __iomem *, unsigned long, long);
-
-#define memcpy_fromio(to,from,len)	__ia64_memcpy_fromio((to), (from),(len))
-#define memcpy_toio(to,from,len)	__ia64_memcpy_toio((to),(from),(len))
-#define memset_io(addr,c,len)		__ia64_memset_c_io((addr), 0x0101010101010101UL*(u8)(c), \
-							   (len))
+extern void memcpy_fromio(void *dst, const volatile void __iomem *src, long n);
+extern void memcpy_toio(volatile void __iomem *dst, const void *src, long n);
+extern void memset_io(volatile void __iomem *s, int c, long n);
 
 #define dma_cache_inv(_start,_size)             do { } while (0)
 #define dma_cache_wback(_start,_size)           do { } while (0)