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-rw-r--r--drivers/mtd/mtdswap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c
index 0ec96cd5dc78..48cf6f98df44 100644
--- a/drivers/mtd/mtdswap.c
+++ b/drivers/mtd/mtdswap.c
@@ -1474,7 +1474,7 @@ static void mtdswap_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
}
eblocks = mtd_div_by_eb(use_size, mtd);
- use_size = eblocks * mtd->erasesize;
+ use_size = (uint64_t)eblocks * mtd->erasesize;
bad_blocks = mtdswap_badblocks(mtd, use_size);
eavailable = eblocks - bad_blocks;