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/dev/mem: use phys_addr_t for physical addresses

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This patch fixes the /dev/mem driver to use phys_addr_t for physical
addresses.  This is required on PAE systems, especially those that run
entirely out of >4G physical memory space.

Signed-off-by: Cyril Chemparathy <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Cyril Chemparathy 2012-09-12 14:05:58 -04:00 • committed by Greg Kroah-Hartman
commit 7e6735c357
7 changed files with 11 additions and 11 deletions
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2
arch/sh/include/asm/io.h
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@ -382,7 +382,7 @@ static inline int iounmap_fixed(void __iomem *addr) { return -EINVAL; }
#define xlate_dev_kmem_ptr(p) p
#define ARCH_HAS_VALID_PHYS_ADDR_RANGE
int valid_phys_addr_range(unsigned long addr, size_t size);
int valid_phys_addr_range(phys_addr_t addr, size_t size);
int valid_mmap_phys_addr_range(unsigned long pfn, size_t size);
#endif /* __KERNEL__ */

2
arch/sh/mm/mmap.c
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@ -238,7 +238,7 @@ bottomup:
* You really shouldn't be using read() or write() on /dev/mem. This
* might go away in the future.
*/
int valid_phys_addr_range(unsigned long addr, size_t count)
int valid_phys_addr_range(phys_addr_t addr, size_t count)
{
if (addr < __MEMORY_START)
return 0;