linux-stable/drivers/mtd/nand
david regan 36415a7964 mtd: rawnand: brcmnand: Fixed incorrect sub-page ECC status
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: 27c5b17cd1 ("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
2022-01-31 17:08:56 +01:00
..
onenand mtd: onenand: remove redundant variable ooblen 2021-12-09 17:29:51 +01:00
raw mtd: rawnand: brcmnand: Fixed incorrect sub-page ECC status 2022-01-31 17:08:56 +01:00
spi mtd: spinand: macronix: Add Quad support for serial NAND flash 2021-08-17 10:42:00 +02:00
bbt.c mtd: nand: bbt: Fix corner case in bad block table handling 2021-05-10 18:20:54 +02:00
core.c mtd: Introduce an expert mode for forensics and debugging purposes 2021-12-09 17:51:59 +01:00
ecc-sw-bch.c mtd: nand: ecc-bch: Use the public nsteps field 2021-03-11 09:37:28 +01:00
ecc-sw-hamming.c mtd: rawnand: Let callers use the bare Hamming helpers 2021-10-15 12:20:59 +02:00
ecc.c
Kconfig
Makefile