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mtd: nand: brcmnand: Zero bitflip is not an error

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A negative return value of brcmstb_nand_verify_erased_page() indicates a
real bitflip error of an erased page, and other return values (>= 0) show
the corrected bitflip number. Zero return value means no bitflip, but the
current driver code treats it as an error, and eventually leads to
falsely reported ECC error.

Fixes: 02b88eea9f ("mtd: brcmnand: Add check for erased page bitflip")
Signed-off-by: Albert Hsieh <wen.hsieh@broadcom.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Albert Hsieh 2017-11-20 11:26:26 +08:00 committed by Richard Weinberger
parent fdf2e82105
commit e44b9a9c13
1 changed files with 1 additions and 1 deletions
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2
drivers/mtd/nand/brcmnand/brcmnand.c
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@ -1763,7 +1763,7 @@ static int brcmnand_read(struct mtd_info *mtd, struct nand_chip *chip,
err = brcmstb_nand_verify_erased_page(mtd, chip, buf,
addr);
/* erased page bitflips corrected */
if (err > 0)
if (err >= 0)
return err;
}