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sh: Make iounmap_fixed() return success/failure for iounmap() path. 

This converts iounmap_fixed() to return success/error if it handled the
unmap request or not. At the same time, drop the __init label, as this
can be called in to later.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2010-01-18 21:30:29 +09:00
parent 0b59e38ffa
commit 4f744affc3
2 changed files with 10 additions and 4 deletions
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5
arch/sh/include/asm/io.h
View File

@ -22,6 +22,7 @@
* for old compat code for I/O offseting to SuperIOs, all of which are * for old compat code for I/O offseting to SuperIOs, all of which are
* better handled through the machvec ioport mapping routines these days. * better handled through the machvec ioport mapping routines these days.
*/ */
#include <linux/errno.h>
#include <asm/cache.h> #include <asm/cache.h>
#include <asm/system.h> #include <asm/system.h>
#include <asm/addrspace.h> #include <asm/addrspace.h>
@ -239,7 +240,7 @@ void __iounmap(void __iomem *addr);
#ifdef CONFIG_IOREMAP_FIXED #ifdef CONFIG_IOREMAP_FIXED
extern void __iomem *ioremap_fixed(resource_size_t, unsigned long, pgprot_t); extern void __iomem *ioremap_fixed(resource_size_t, unsigned long, pgprot_t);
extern void iounmap_fixed(void __iomem *); extern int iounmap_fixed(void __iomem *);
extern void ioremap_fixed_init(void); extern void ioremap_fixed_init(void);
#else #else
static inline void __iomem * static inline void __iomem *
@ -249,7 +250,7 @@ ioremap_fixed(resource_size t phys_addr, unsigned long size, pgprot_t prot)
} }
static inline void ioremap_fixed_init(void) { } static inline void ioremap_fixed_init(void) { }
static inline void iounmap_fixed(void __iomem *addr) { } static inline int iounmap_fixed(void __iomem *addr) { return -EINVAL; }
#endif #endif
static inline void __iomem * static inline void __iomem *

9
arch/sh/mm/ioremap_fixed.c
View File

@ -103,7 +103,7 @@ ioremap_fixed(resource_size_t phys_addr, unsigned long size, pgprot_t prot)
return map->addr; return map->addr;
} }
void __init iounmap_fixed(void __iomem *addr) int iounmap_fixed(void __iomem *addr)
{ {
enum fixed_addresses idx; enum fixed_addresses idx;
unsigned long virt_addr; unsigned long virt_addr;
@ -122,8 +122,11 @@ void __init iounmap_fixed(void __iomem *addr)
} }
} }
/*
* If we don't match, it's not for us.
*/
if (slot < 0) if (slot < 0)
return; return -EINVAL;
virt_addr = (unsigned long)addr; virt_addr = (unsigned long)addr;
@ -141,4 +144,6 @@ void __init iounmap_fixed(void __iomem *addr)
map->size = 0; map->size = 0;
map->addr = NULL; map->addr = NULL;
return 0;
} }