pekon gupta f306e8c3b6 mtd: nand: omap: fix BCHx ecc.correct to return detected bit-flips in erased-page ...

fixes: commit 62116e5171e00f85a8d53f76e45b84423c89ff34
       mtd: nand: omap2: Support for hardware BCH error correction.

In omap_elm_correct_data(), if bitflip_count in an erased-page is within the
correctable limit (< ecc.strength), then it is not indicated back to the caller
ecc->read_page().

This mis-guides upper layers like MTD and UBIFS layer to assume erased-page as
perfectly clean and use it for writing even if actual bitflip_count was
dangerously high (bitflip_count > mtd->bitflip_threshold).

This patch fixes this above issue, by returning 'stats' to caller
ecc->read_page() under all scenarios.

Reported-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Pekon Gupta <pekon@ti.com>
Cc: <stable@vger.kernel.org> # 3.9.x+
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

2014-05-20 16:32:17 -07:00

..

chips

mtd: Add a retlen parameter to _get_{fact,user}_prot_info

2014-03-10 22:42:28 -07:00

devices

mtd: m25p80: Revive dual read support

2014-05-12 13:16:26 -07:00

lpddr

mtd: lpddr: Remove unnecessary OOM messages

2014-03-10 22:42:24 -07:00

maps

mtd: Fix Elan SC520 dependencies

2014-05-12 11:55:53 -07:00

nand

mtd: nand: omap: fix BCHx ecc.correct to return detected bit-flips in erased-page

2014-05-20 16:32:17 -07:00

onenand

mtd: Add a retlen parameter to _get_{fact,user}_prot_info

2014-03-10 22:42:28 -07:00

spi-nor

mtd: spi-nor: Enable Dual and Quad SPI read transfers for s25sl032p

2014-05-12 13:16:26 -07:00

tests

mtd: mtd_oobtest: generate consistent data for verification

2014-04-17 22:22:03 -07:00

ubi

MTD updates for 3.15:

2014-04-07 10:17:30 -07:00

afs.c

mtd: make register_mtd_parser return void

2014-01-03 11:22:22 -08:00

ar7part.c

mtd: make register_mtd_parser return void

2014-01-03 11:22:22 -08:00

bcm47xxpart.c

mtd: bcm47xxpart: allow enabling on ARCH_BCM_5301X

2014-03-10 22:42:29 -07:00

bcm63xxpart.c

mtd: make register_mtd_parser return void

2014-01-03 11:22:22 -08:00

cmdlinepart.c

mtd: make register_mtd_parser return void

2014-01-03 11:22:22 -08:00

ftl.c

…

inftlcore.c

mtd: nand: add a helper to detect the nand type

2013-10-27 16:27:06 -07:00

inftlmount.c

mtd: delete non-required instances of include <linux/init.h>

2014-03-10 22:42:22 -07:00

Kconfig

mtd: spi-nor: add the framework for SPI NOR

2014-04-14 11:22:58 -07:00

Makefile

mtd: spi-nor: shorten Kconfig naming

2014-04-14 11:23:01 -07:00

mtd_blkdevs.c

mtd: mtd_blkdevs: handle REQ_FLUSH request and do explicit flush of writeback buffer

2014-04-15 23:25:37 -07:00

mtdblock_ro.c

mtd: Move major number definitions to major.h

2013-11-06 23:32:59 -08:00

mtdblock.c

mtd: Move major number definitions to major.h

2013-11-06 23:32:59 -08:00

mtdchar.c

mtd: Fix the behavior of OTP write if there is not enough room for data

2014-03-10 22:42:31 -07:00

mtdconcat.c

…

mtdcore.c

mtd: Fix the behavior of OTP write if there is not enough room for data

2014-03-10 22:42:31 -07:00

mtdcore.h

mtd: merge mtdchar module with mtdcore

2013-04-05 13:16:54 +01:00

mtdoops.c

mtdoops: don't erase flash at each boot

2012-11-15 15:37:51 +02:00

mtdpart.c

mtd: Add a retlen parameter to _get_{fact,user}_prot_info

2014-03-10 22:42:28 -07:00

mtdsuper.c

mtd: Move major number definitions to major.h

2013-11-06 23:32:59 -08:00

mtdswap.c

mtd: mtdswap: replace strict_strtoul() with kstrtoul()

2013-08-30 21:52:51 +01:00

nftlcore.c

mtd: nand: add a helper to detect the nand type

2013-10-27 16:27:06 -07:00

nftlmount.c

…

ofpart.c

mtd: make register_mtd_parser return void

2014-01-03 11:22:22 -08:00

redboot.c

mtd: make register_mtd_parser return void

2014-01-03 11:22:22 -08:00

rfd_ftl.c

mtd: remove some duplicative checks

2014-03-10 22:42:25 -07:00

sm_ftl.c

mtd: sm_ftl: heap corruption in sm_create_sysfs_attributes()

2014-03-10 22:42:21 -07:00

sm_ftl.h

…

ssfdc.c

mtd: nand: add a helper to detect the nand type

2013-10-27 16:27:06 -07:00