mtd: nand: Fix integer overflow in ONFI detection of chips >= 4GiB

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 75d199e4f25b..33550c43acc2 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2894,7 +2894,7 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip,
         mtd->writesize = le32_to_cpu(p->byte_per_page);
         mtd->erasesize = le32_to_cpu(p->pages_per_block) * mtd->writesize;
         mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page);
-        chip->chipsize = le32_to_cpu(p->blocks_per_lun) * mtd->erasesize;
+        chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * mtd->erasesize;
         busw = 0;
         if (le16_to_cpu(p->features) & 1)
                 busw = NAND_BUSWIDTH_16;