diff options
| author | Will Deacon <will.deacon@arm.com> | 2011-02-15 19:28:28 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-02-18 02:27:34 +0300 |
| commit | 3a6b1676c6f27f7fad1a3d6fab5a95f90b1e7402 (patch) | |
| tree | 7457d1896dae7e61bfad76f6d26e2d84a1b3ae7e /arch/arm/include/asm/memory.h | |
| parent | 4d901c4271951d110afb13ee9aa73d27a6c8e53d (diff) | |
| download | linux-3a6b1676c6f27f7fad1a3d6fab5a95f90b1e7402.tar.xz | |
ARM: 6675/1: use phys_addr_t instead of unsigned long in conversion code
The unsigned long datatype is not sufficient for mapping physical addresses
>= 4GB.
This patch ensures that the address conversion code in asm/memory.h casts
to the correct type when handling physical addresses. The internal v2p
macros only deal with lowmem addresses, so these do not need to be modified.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/memory.h')
| -rw-r--r-- | arch/arm/include/asm/memory.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index 2398b3fc0268..431077c5a867 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h @@ -15,6 +15,7 @@ #include <linux/compiler.h> #include <linux/const.h> +#include <linux/types.h> #include <mach/memory.h> #include <asm/sizes.h> @@ -135,8 +136,8 @@ /* * Convert a physical address to a Page Frame Number and back */ -#define __phys_to_pfn(paddr) ((paddr) >> PAGE_SHIFT) -#define __pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT) +#define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT)) +#define __pfn_to_phys(pfn) ((phys_addr_t)(pfn) << PAGE_SHIFT) /* * Convert a page to/from a physical address @@ -234,12 +235,12 @@ static inline unsigned long __phys_to_virt(unsigned long x) * translation for translating DMA addresses. Use the driver * DMA support - see dma-mapping.h. */ -static inline unsigned long virt_to_phys(const volatile void *x) +static inline phys_addr_t virt_to_phys(const volatile void *x) { return __virt_to_phys((unsigned long)(x)); } -static inline void *phys_to_virt(unsigned long x) +static inline void *phys_to_virt(phys_addr_t x) { return (void *)(__phys_to_virt((unsigned long)(x))); } |