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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2007-06-03 14:26:04 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2007-07-12 06:13:33 -0400
commit6d78b5f9c6cf59c98d3833e09d0ed6aebd6a33d3 (patch)
treead95d89fa69f6aa452040cef60438d08e5748a46 /arch/arm/mm/ioremap.c
parent4486b86368d72bcac76439638b36667b1c6a1360 (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.c10
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,
280 if (!type) 280 if (!type)
281 return NULL; 281 return NULL;
282 282
283 size = PAGE_ALIGN(size); 283 /*
284 * Page align the mapping size, taking account of any offset.
285 */
286 size = PAGE_ALIGN(offset + size);
284 287
285 area = get_vm_area(size, VM_IOREMAP); 288 area = get_vm_area(size, VM_IOREMAP);
286 if (!area) 289 if (!area)
@@ -325,11 +328,6 @@ __arm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
325 if (!size || last_addr < phys_addr) 328 if (!size || last_addr < phys_addr)
326 return NULL; 329 return NULL;
327 330
328 /*
329 * Page align the mapping size
330 */
331 size = PAGE_ALIGN(last_addr + 1) - phys_addr;
332
333 return __arm_ioremap_pfn(pfn, offset, size, mtype); 331 return __arm_ioremap_pfn(pfn, offset, size, mtype);
334} 332}
335EXPORT_SYMBOL(__arm_ioremap); 333EXPORT_SYMBOL(__arm_ioremap);