sh: move ioremap_fixed details out of <asm/io.h>

ioremap_fixed is an internal implementation detail and should not be
exposed to drivers.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NRich Felker <dalias@libc.org>

arch/sh/include/asm/io.h

@@ -346,22 +346,6 @@ ioremap_prot(phys_addr_t offset, unsigned long size, unsigned long flags)
 }
 #endif
 
-#ifdef CONFIG_IOREMAP_FIXED
-extern void __iomem *ioremap_fixed(phys_addr_t, unsigned long, pgprot_t);
-extern int iounmap_fixed(void __iomem *);
-extern void ioremap_fixed_init(void);
-#else
-static inline void __iomem *
-ioremap_fixed(phys_addr_t phys_addr, unsigned long size, pgprot_t prot)
-{
-	BUG();
-	return NULL;
-}
-
-static inline void ioremap_fixed_init(void) { }
-static inline int iounmap_fixed(void __iomem *addr) { return -EINVAL; }
-#endif
-
 #define ioremap_uc	ioremap
 
 /*

arch/sh/mm/init.c

@@ -28,6 +28,7 @@
 #include <asm/setup.h>
 #include <asm/cache.h>
 #include <linux/sizes.h>
+#include "ioremap.h"
 
 pgd_t swapper_pg_dir[PTRS_PER_PGD];
 

arch/sh/mm/ioremap.c

@@ -24,6 +24,7 @@
 #include <asm/cacheflush.h>
 #include <asm/tlbflush.h>
 #include <asm/mmu.h>
+#include "ioremap.h"
 
 /*
  * Remap an arbitrary physical address space into the kernel virtual

arch/sh/mm/ioremap.h

+#ifndef _SH_MM_IORMEMAP_H
+#define _SH_MM_IORMEMAP_H 1
+
+#ifdef CONFIG_IOREMAP_FIXED
+void __iomem *ioremap_fixed(phys_addr_t, unsigned long, pgprot_t);
+int iounmap_fixed(void __iomem *);
+void ioremap_fixed_init(void);
+#else
+static inline void __iomem *
+ioremap_fixed(phys_addr_t phys_addr, unsigned long size, pgprot_t prot)
+{
+	BUG();
+	return NULL;
+}
+static inline void ioremap_fixed_init(void)
+{
+}
+static inline int iounmap_fixed(void __iomem *addr)
+{
+	return -EINVAL;
+}
+#endif /* CONFIG_IOREMAP_FIXED */
+#endif /* _SH_MM_IORMEMAP_H */

arch/sh/mm/ioremap_fixed.c

@@ -24,6 +24,7 @@
 #include <asm/tlbflush.h>
 #include <asm/mmu.h>
 #include <asm/mmu_context.h>
+#include "ioremap.h"
 
 struct ioremap_map {
 	void __iomem *addr;