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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2007-06-03 19:26:04 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-07-12 11:13:33 +0100 |
| commit | 6d78b5f9c6cf59c98d3833e09d0ed6aebd6a33d3 (patch) | |
| tree | ad95d89fa69f6aa452040cef60438d08e5748a46 /arch/arm/mm/ioremap.c | |
| parent | 4486b86368d72bcac76439638b36667b1c6a1360 (diff) | |
[ARM] Fix bounding error in ioremap_pfn()
If size=16M offset=2K then we should map two supersections
rather than just one.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/ioremap.c')
| -rw-r--r-- | arch/arm/mm/ioremap.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c index f3ade18862aa..75952779ce19 100644 --- a/arch/arm/mm/ioremap.c +++ b/arch/arm/mm/ioremap.c @@ -280,7 +280,10 @@ __arm_ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size, if (!type) return NULL; - size = PAGE_ALIGN(size); + /* + * Page align the mapping size, taking account of any offset. + */ + size = PAGE_ALIGN(offset + size); area = get_vm_area(size, VM_IOREMAP); if (!area) @@ -325,11 +328,6 @@ __arm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype) if (!size || last_addr < phys_addr) return NULL; - /* - * Page align the mapping size - */ - size = PAGE_ALIGN(last_addr + 1) - phys_addr; - return __arm_ioremap_pfn(pfn, offset, size, mtype); } EXPORT_SYMBOL(__arm_ioremap); |