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| author | Ingo Molnar <mingo@kernel.org> | 2015-05-08 13:41:09 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-05-08 13:41:09 +0300 |
| commit | 99e711101c7822d9ddf39f16c026b97e16a9f517 (patch) | |
| tree | 97f9d3bc19a3595365e68115015e27f1d4e7009d /arch/x86/mm | |
| parent | f1dc154f82595386cddcc7b980d8760474c3dd2d (diff) | |
| parent | 3e0283a53f7d2f2dae7bc4aa7f3104cb5988018f (diff) | |
| download | linux-99e711101c7822d9ddf39f16c026b97e16a9f517.tar.xz | |
Merge branch 'linus' into x86/cleanups, before applying dependent patch
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/ioremap.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c index 5ead4d6cf3a7..70e7444c6835 100644 --- a/arch/x86/mm/ioremap.c +++ b/arch/x86/mm/ioremap.c @@ -351,18 +351,20 @@ int arch_ioremap_pmd_supported(void) */ void *xlate_dev_mem_ptr(phys_addr_t phys) { - void *addr; - unsigned long start = phys & PAGE_MASK; + unsigned long start = phys & PAGE_MASK; + unsigned long offset = phys & ~PAGE_MASK; + unsigned long vaddr; /* If page is RAM, we can use __va. Otherwise ioremap and unmap. */ if (page_is_ram(start >> PAGE_SHIFT)) return __va(phys); - addr = (void __force *)ioremap_cache(start, PAGE_SIZE); - if (addr) - addr = (void *)((unsigned long)addr | (phys & ~PAGE_MASK)); + vaddr = (unsigned long)ioremap_cache(start, PAGE_SIZE); + /* Only add the offset on success and return NULL if the ioremap() failed: */ + if (vaddr) + vaddr += offset; - return addr; + return (void *)vaddr; } void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr) |