1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/mtd/chips/gen_probe.c b/drivers/mtd/chips/gen_probe.c
index 2eb696d7b97b..d338b8c92780 100644
--- a/drivers/mtd/chips/gen_probe.c
+++ b/drivers/mtd/chips/gen_probe.c
@@ -112,7 +112,7 @@ static struct cfi_private *genprobe_ident_chips(struct map_info *map, struct chi
                 max_chips = 1;
         }
 
-        mapsize = (max_chips + BITS_PER_LONG-1) / BITS_PER_LONG;
+        mapsize = sizeof(long) * ( (max_chips + BITS_PER_LONG-1) / BITS_PER_LONG );
         chip_map = kzalloc(mapsize, GFP_KERNEL);
         if (!chip_map) {
                 printk(KERN_WARNING "%s: kmalloc failed for CFI chip map\n", map->name);