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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2006-12-17 23:29:57 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-12-17 23:29:57 +0000
commitc924aff853bdc1c9841dd22440f931fba5ab3a59 (patch)
treeeaf325f35e46f8d76514fa357326d78590eafd7f
parent5a059f1ac0ed0c937257027aed5da50241f5ec2b (diff)
[ARM] Fix BUG()s in ioremap() code
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>
-rw-r--r--arch/arm/mm/ioremap.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index 3bb3951920b..251685fe73a 100644
--- 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;