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| author | david regan <dregan@mail.com> | 2022-01-27 01:43:44 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-23 14:01:04 +0300 |
| commit | a176d559e826672c5b07ca42d63bfb3975c756f7 (patch) | |
| tree | 81eb00973b38205145fac9f8e364608397249660 /drivers/mtd | |
| parent | 1a49b1b0b0cb2170fc6e5ab0613eb8139302b6c7 (diff) | |
| download | linux-a176d559e826672c5b07ca42d63bfb3975c756f7.tar.xz | |
mtd: rawnand: brcmnand: Fixed incorrect sub-page ECC status
commit 36415a7964711822e63695ea67fede63979054d9 upstream.
The brcmnand driver contains a bug in which if a page (example 2k byte)
is read from the parallel/ONFI NAND and within that page a subpage (512
byte) has correctable errors which is followed by a subpage with
uncorrectable errors, the page read will return the wrong status of
correctable (as opposed to the actual status of uncorrectable.)
The bug is in function brcmnand_read_by_pio where there is a check for
uncorrectable bits which will be preempted if a previous status for
correctable bits is detected.
The fix is to stop checking for bad bits only if we already have a bad
bits status.
Fixes: 27c5b17cd1b1 ("mtd: nand: add NAND driver "library" for Broadcom STB NAND controller")
Signed-off-by: david regan <dregan@mail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/trinity-478e0c09-9134-40e8-8f8c-31c371225eda-1643237024774@3c-app-mailcom-lxa02
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/raw/brcmnand/brcmnand.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c index 909b14cc8e55..580b91cbd18d 100644 --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c @@ -2062,7 +2062,7 @@ static int brcmnand_read_by_pio(struct mtd_info *mtd, struct nand_chip *chip, mtd->oobsize / trans, host->hwcfg.sector_size_1k); - if (!ret) { + if (ret != -EBADMSG) { *err_addr = brcmnand_get_uncorrecc_addr(ctrl); if (*err_addr) |