linux-kernel - A potential bug in mm/memblock.c?

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Date:	Wed, 25 Apr 2012 14:27:11 +0800
From:	Peter Teoh <htmldeveloper@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Minchan Kim <minchan.kim@...il.com>
Subject: A potential bug in mm/memblock.c?

Comments please.   Thanks.

Signed-off-by: Peter Teoh <htmldeveloper@...il.com>

diff --git a/mm/memblock.c b/mm/memblock.c
index a44eab3..2c621c5 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -553,8 +553,8 @@ void __init_memblock __next_free_mem_range(u64
*idx, int nid,
 {
       struct memblock_type *mem = &memblock.memory;
       struct memblock_type *rsv = &memblock.reserved;
-       int mi = *idx & 0xffffffff;
-       int ri = *idx >> 32;
+       unsigned int mi = *idx & 0xffffffff;
+       unsigned int ri = *idx >> 32;

       for ( ; mi < mem->cnt; mi++) {
               struct memblock_region *m = &mem->regions[mi];



-- 
Regards,
Peter Teoh
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