Tokunori Ikegami 9ce51a5b41 mtd: cfi_cmdset_0002: Use chip_good() to retry in do_write_oneword() ... commit 37c673ade35c707d50583b5b25091ff8ebdeafd7 upstream. As reported by the OpenWRT team, write requests sometimes fail on some platforms. Currently to check the state chip_ready() is used correctly as described by the flash memory S29GL256P11TFI01 datasheet. Also chip_good() is used to check if the write is succeeded and it was implemented by the commit fb4a90bfcd ("[MTD] CFI-0002 - Improve error checking"). But actually the write failure is caused on some platforms and also it can be fixed by using chip_good() to check the state and retry instead. Also it seems that it is caused after repeated about 1,000 times to retry the write one word with the reset command. By using chip_good() to check the state to be done it can be reduced the retry with reset. It is depended on the actual flash chip behavior so the root cause is unknown. Cc: Chris Packham <chris.packham@alliedtelesis.co.nz> Cc: Joakim Tjernlund <Joakim.Tjernlund@infinera.com> Cc: linux-mtd@lists.infradead.org Cc: stable@vger.kernel.org Reported-by: Fabio Bettoni <fbettoni@gmail.com> Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Tokunori Ikegami <ikegami.t@gmail.com> [vigneshr@ti.com: Fix a checkpatch warning] Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-10-05 12:27:37 +02:00
..
chips	mtd: cfi_cmdset_0002: Use chip_good() to retry in do_write_oneword()	2019-10-05 12:27:37 +02:00
devices	mtd: docg3: don't set conflicting BCH_CONST_PARAMS option	2018-11-21 09:27:42 +01:00
lpddr	mtd: lpddr: show parent device in sysfs	2015-10-13 09:21:17 -07:00
maps	mtd/maps: fix solutionengine.c printk format warnings	2018-09-26 08:35:05 +02:00
nand	mtd: rawnand: gpmi: fix MX28 bus master lockup problem	2019-02-20 10:13:17 +01:00
onenand	mtd: onenand: fix deadlock in onenand_block_markbad	2016-04-12 09:09:05 -07:00
spi-nor	mtd: spi-nor: Add support for is25wp series chips	2018-11-10 07:41:41 -08:00
tests	mtd: tests: Replace timeval with ktime_t	2015-10-26 13:23:47 -07:00
ubi	mtd: ubi: wl: Fix error return code in ubi_wl_init()	2018-09-19 22:49:00 +02:00
afs.c
ar7part.c
bcm47xxpart.c	mtd: bcm47xxpart: don't fail because of bit-flips	2017-07-05 14:37:18 +02:00
bcm63xxpart.c
cmdlinepart.c	mtd: cmdlinepart: convert printk() to pr_*()	2015-09-28 18:37:32 -07:00
ftl.c
inftlcore.c
inftlmount.c
Kconfig
Makefile
mtd_blkdevs.c	mtd: blkdevs: fix potential deadlock + lockdep warnings	2015-10-30 17:24:43 -07:00
mtdblock.c
mtdblock_ro.c
mtdchar.c	mtdchar: fix overflows in adjustment of count	2018-09-26 08:35:08 +02:00
mtdconcat.c
mtdcore.c	mtd: fix cmdlinepart parser, early naming for auto-filled MTD	2016-01-04 10:54:18 -08:00
mtdcore.h
mtdoops.c
mtdpart.c	mtd: mtdpart: Do not fail mtd probe when parsing partitions fails	2015-10-26 18:43:48 -07:00
mtdsuper.c
mtdswap.c
nftlcore.c
nftlmount.c
ofpart.c	doc: dt: mtd: partitions: add compatible property to "partitions" node	2015-12-08 17:10:20 -08:00
redboot.c
rfd_ftl.c
sm_ftl.c
sm_ftl.h
ssfdc.c