diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2016-01-11 17:15:58 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2016-02-08 15:47:28 +0000 |
| commit | 2841029393fad551b49b6de34d44bfa9ef256441 (patch) | |
| tree | 8e4d1040e2a6cba7a1a09729abad19fe7c0a50c8 /arch/arm/include/asm | |
| parent | 9023cc8268c6ba358417d31112ed96e1feb73e56 (diff) | |
ARM: make virt_to_idmap() return unsigned long
Make virt_to_idmap() return an unsigned long rather than phys_addr_t.
Returning phys_addr_t here makes no sense, because the definition of
virt_to_idmap() is that it shall return a physical address which maps
identically with the virtual address. Since virtual addresses are
limited to 32-bit, identity mapped physical addresses are as well.
Almost all users already had an implicit narrowing cast to unsigned long
so let's make this official and part of this interface.
Tested-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm')
| -rw-r--r-- | arch/arm/include/asm/memory.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index c79b57bf71c4..49bf6b1e2177 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h @@ -273,14 +273,14 @@ static inline void *phys_to_virt(phys_addr_t x) #define __va(x) ((void *)__phys_to_virt((phys_addr_t)(x))) #define pfn_to_kaddr(pfn) __va((phys_addr_t)(pfn) << PAGE_SHIFT) -extern phys_addr_t (*arch_virt_to_idmap)(unsigned long x); +extern unsigned long (*arch_virt_to_idmap)(unsigned long x); /* * These are for systems that have a hardware interconnect supported alias of * physical memory for idmap purposes. Most cases should leave these - * untouched. + * untouched. Note: this can only return addresses less than 4GiB. */ -static inline phys_addr_t __virt_to_idmap(unsigned long x) +static inline unsigned long __virt_to_idmap(unsigned long x) { if (IS_ENABLED(CONFIG_MMU) && arch_virt_to_idmap) return arch_virt_to_idmap(x); |