Fixing an off-by-one error in devmem_is_allowed(), which allows accesses to
physical addresses 0x100000-0x100fff, an extra page past 1MB.
Signed-off-by: T Makphaibulchoke <t...@hp.com>
---
arch/x86/mm/init.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index e0e6990..ab1f6a9 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -319,7 +319,7 @@ unsigned long __init_refok init_memory_mapping(unsigned
long start,
*/
int devmem_is_allowed(unsigned long pagenr)
{
- if (pagenr <= 256)
+ if (pagenr < 256)
return 1;
if (iomem_is_exclusive(pagenr << PAGE_SHIFT))
return 0;
--
1.7.1
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