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[ARM] Fix BUG()s in ioremap() code

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We need to ensure that the area size is page aligned so that
remap_area_pte() doesn't increment the address past the end of
the desired area.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2006-12-17 23:29:57 +00:00 • committed by Russell King
parent 5a059f1ac0
commit c924aff853
1 changed files with 2 additions and 0 deletions
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arch/arm/mm/ioremap.c
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@ -292,6 +292,8 @@ __ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
if (pfn >= 0x100000 && (__pfn_to_phys(pfn) & ~SUPERSECTION_MASK)) if (pfn >= 0x100000 && (__pfn_to_phys(pfn) & ~SUPERSECTION_MASK))
return NULL; return NULL;
size = PAGE_ALIGN(size);
area = get_vm_area(size, VM_IOREMAP); area = get_vm_area(size, VM_IOREMAP);
if (!area) if (!area)
return NULL; return NULL;