m68knommu: remove stubs for __ioremap() and iounmap()

The implementation of iounmap() and __ioremap() for non-mmu m68k is
trivial. We can inline them in m68knommu headers and remove the trivial
implementations.

Signed-off-by: Greg Ungerer <[e-mail]>

arch/m68k/include/asm/io_no.h

···
 #define IOMAP_NOCACHE_NONSER		2
 #define IOMAP_WRITETHROUGH		3
 
-extern void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag);
-
+static inline void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
+{
+	return (void *) physaddr;
+}
 static inline void *ioremap(unsigned long physaddr, unsigned long size)
 {
 	return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
···
 	return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
 }
 
-extern void iounmap(void *addr);
+#define	iounmap(addr)	do { } while(0)
 
 /*
  * Convert a physical pointer to a virtual kernel pointer for /dev/mem

arch/m68k/kernel/m68k_ksyms_no.c

···
 
 /* platform dependent support */
 
-EXPORT_SYMBOL(__ioremap);
-EXPORT_SYMBOL(iounmap);
 EXPORT_SYMBOL(dump_fpu);
 
 EXPORT_SYMBOL(ip_fast_csum);

arch/m68k/mm/Makefile_no

···
 # Makefile for the linux m68knommu specific parts of the memory manager.
 #
 
-obj-y += init.o kmap.o
+obj-y += init.o

arch/m68k/mm/kmap_no.c

···
-/*
- *  linux/arch/m68knommu/mm/kmap.c
- *
- *  Copyright (C) 2000 Lineo, <[e-mail]>
- *  Copyright (C) 2000-2002 David McCullough <[e-mail]>
- */
-
-#include <linux/mm.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/vmalloc.h>
-
-#include <asm/setup.h>
-#include <asm/segment.h>
-#include <asm/page.h>
-#include <asm/pgalloc.h>
-#include <asm/io.h>
-#include <asm/system.h>
-
-#undef DEBUG
-
-/*
- * Map some physical address range into the kernel address space.
- */
-void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
-{
-	return (void *)physaddr;
-}
-
-/*
- * Unmap a ioremap()ed region again.
- */
-void iounmap(void *addr)
-{
-}
-