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[ARM] Fix BUG()s in ioremap() code
author
Russell King
<rmk@dyn-67.arm.linux.org.uk>
Sun, 17 Dec 2006 23:29:57 +0000
(23:29 +0000)
committer
Russell King
<rmk+kernel@arm.linux.org.uk>
Sun, 17 Dec 2006 23:29:57 +0000
(23:29 +0000)
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>
arch/arm/mm/ioremap.c
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diff --git
a/arch/arm/mm/ioremap.c
b/arch/arm/mm/ioremap.c
index
3bb3951
..
251685f
100644
(file)
--- a/
arch/arm/mm/ioremap.c
+++ b/
arch/arm/mm/ioremap.c
@@
-292,6
+292,8
@@
__ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
if (pfn >= 0x100000 && (__pfn_to_phys(pfn) & ~SUPERSECTION_MASK))
return NULL;
+ size = PAGE_ALIGN(size);
+
area = get_vm_area(size, VM_IOREMAP);
if (!area)
return NULL;