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authorRoel Kluin <roel.kluin@gmail.com>2009-09-18 12:51:50 -0700
committerDavid Woodhouse <David.Woodhouse@intel.com>2009-09-19 11:23:26 -0700
commita57ca0466af5da83e379d636b8c01fd53b41e2c6 (patch)
treec5f5d96fd9729aafe24aff8e6974bd6eea78a250
parentebf2e93036907fe2a7ddab942aa63d35f97f3b2b (diff)
mtd: mtdpart: prevent a read from regions[-1]
If the erase region was found in the first iteration we read from regions[-1] Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
-rw-r--r--drivers/mtd/mtdpart.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 349fcbe5cc0..a83cfa1ad12 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -453,7 +453,8 @@ static struct mtd_part *add_one_partition(struct mtd_info *master,
for (i = 0; i < max && regions[i].offset <= slave->offset; i++)
;
/* The loop searched for the region _behind_ the first one */
- i--;
+ if (i > 0)
+ i--;
/* Pick biggest erasesize */
for (; i < max && regions[i].offset < end; i++) {