linux-stable.git/include/linux/mtd, branch linux-5.17.y

mtd: cfi_cmdset_0002: Use chip_ready() for write on S29GL064N

2022-06-09T08:26:25+00:00

commit 0a8e98305f63deaf0a799d5cf5532cc83af035d1 upstream.

Since commit dfeae1073583("mtd: cfi_cmdset_0002: Change write buffer to
check correct value") buffered writes fail on S29GL064N. This is
because, on S29GL064N, reads return 0xFF at the end of DQ polling for
write completion, where as, chip_good() check expects actual data
written to the last location to be returned post DQ polling completion.
Fix is to revert to using chip_good() for S29GL064N which only checks
for DQ lines to settle down to determine write completion.

Link: https://lore.kernel.org/r/b687c259-6413-26c9-d4c9-b3afa69ea124@pengutronix.de/
Fixes: dfeae1073583("mtd: cfi_cmdset_0002: Change write buffer to check correct value")
Cc: stable@vger.kernel.org
Signed-off-by: Tokunori Ikegami 
Acked-by: Vignesh Raghavendra 
Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/20220323170458.5608-3-ikegami.t@gmail.com
Signed-off-by: Greg Kroah-Hartman

mtd: fix 'part' field data corruption in mtd_info

2022-05-09T07:16:21+00:00

[ Upstream commit 37c5f9e80e015d0df17d0c377c18523002986851 ]

Commit 46b5889cc2c5 ("mtd: implement proper partition handling")
started using "mtd_get_master_ofs()" in mtd callbacks to determine
memory offsets by means of 'part' field from mtd_info, what previously
was smashed accessing 'master' field in the mtd_set_dev_defaults() method.
That provides wrong offset what causes hardware access errors.

Just make 'part', 'master' as separate fields, rather than using
union type to avoid 'part' data corruption when mtd_set_dev_defaults()
is called.

Fixes: 46b5889cc2c5 ("mtd: implement proper partition handling")
Signed-off-by: Oleksandr Ocheretnyi 
Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/20220417184649.449289-1-oocheret@cisco.com
Signed-off-by: Sasha Levin

mtd: rawnand: protect access to rawnand devices while in suspend

2022-04-08T11:57:19+00:00

commit 8cba323437a49a45756d661f500b324fc2d486fe upstream.

Prevent rawnand access while in a suspended state.

Commit 013e6292aaf5 ("mtd: rawnand: Simplify the locking") allows the
rawnand layer to return errors rather than waiting in a blocking wait.

Tested on a iMX6ULL.

Fixes: 013e6292aaf5 ("mtd: rawnand: Simplify the locking")
Signed-off-by: Sean Nyekjaer 
Reviewed-by: Boris Brezillon 
Cc: stable@vger.kernel.org
Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/20220208085213.1838273-1-sean@geanix.com
Signed-off-by: Greg Kroah-Hartman

Merge tag 'nand/for-5.17' into mtd/next

2021-12-31T12:31:34+00:00

Raw NAND core:
* Export nand_read_page_hwecc_oob_first()

GPMC memory controller for OMAP2 NAND controller:
* GPMC:
  - Add support for AM64 SoC and allow build on K3 platforms
  - Use a compatible match table when checking for NAND controller
  - Use platform_get_irq() to get the interrupt

Raw NAND controller drivers:
* OMAP2 NAND controller:
  - Document the missing 'rb-gpios' DT property
  - Drop unused variable
  - Fix force_8bit flag behaviour for DMA mode
  - Move to exec_op interface
  - Use platform_get_irq() to get the interrupt
* Renesas:
  - Add new NAND controller driver with its bindings and MAINTAINERS entry
* Onenand:
  - Remove redundant variable ooblen
* MPC5121:
  - Remove unused variable in ads5121_select_chip()
* GPMI:
  - Add ERR007117 protection for nfc_apply_timings
  - Remove explicit default gpmi clock setting for i.MX6
  - Use platform_get_irq_byname() to get the interrupt
  - Remove unneeded variable
* Ingenic:
  - JZ4740 needs 'oob_first' read page function
* Davinci:
  - Rewrite function description
  - Avoid duplicated page read
  - Don't calculate ECC when reading page

Signed-off-by: Miquel Raynal

Merge tag 'spi-nor/for-5.17' into mtd/next

2021-12-31T12:29:36+00:00

SPI NOR core changes:
- Add Pratyush as SPI NOR co-maintainer.
- Flash parameters initialization was done in a spaghetti way. Clean
  flash parameters initialization.
- Rework the flash_info flags and clarify where one should be used.
- Initialize all flash parameters based on JESD216 SFDP where possible.
  Flash parameters and settings that are SFDP discoverable should not be
  duplicated via flash_info flags at flash declaration.
- Remove debugfs entries that duplicate sysfs entries.

SPI NOR manufacturer drivers changes:
- Use late_init() hook in various drivers to make it clear that those
  flash parameters are either not declared in the JESD216 SFDP standard,
  or the SFDP tables which define those flash parameters are not defined
  by the flash.
- Fix mtd size for s3an flashes.
- Write 2 bytes when disabling Octal DTR mode: 1 byte long transactions are
  not allowed in 8D-8D-8D mode.

Signed-off-by: Miquel Raynal

mtd: Introduce an expert mode for forensics and debugging purposes

2021-12-09T16:51:59+00:00

When developping NAND controller drivers or when debugging filesystem
corruptions, it is quite common to need hacking locally into the
MTD/NAND core in order to get access to the content of the bad
blocks. Instead of having multiple implementations out there let's
provide a simple yet effective specific MTD-wide debugfs entry to fully
disable these checks on purpose.

A warning is added to inform the user when this mode gets enabled.

Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/20211118114659.1282855-1-miquel.raynal@bootlin.com

mtd: remove unused header file

2021-12-03T13:27:19+00:00

Commit d24dbd7541ff ("mtd: maps: Get rid of the latch-addr-flash driver")
removed the last user of  but left the header
file behind.  Nothing uses this file, delete it now.

Cc: Boris Brezillon 
Cc: Miquel Raynal 
Cc: Richard Weinberger 
Cc: Vignesh Raghavendra 
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Jonathan Corbet 
Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/20211102220203.940290-7-corbet@lwn.net

mtd: rawnand: Export nand_read_page_hwecc_oob_first()

2021-11-19T18:43:11+00:00

Move the function nand_read_page_hwecc_oob_first() (previously
nand_davinci_read_page_hwecc_oob_first()) to nand_base.c, and export it
as a GPL symbol, so that it can be used by more modules.

Cc:  # v5.2
Fixes: a0ac778eb82c ("mtd: rawnand: ingenic: Add support for the JZ4740")
Signed-off-by: Paul Cercueil 
Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/20211016132228.40254-4-paul@crapouillou.net

mtd: spi-nor: Get rid of nor->page_size

2021-11-17T12:41:26+00:00

nor->page_size duplicated what nor->params->page_size indicates
for no good reason. page_size is a flash parameter of fixed value
and it is better suited to be found in nor->params->page_size.

Signed-off-by: Tudor Ambarus 
Reviewed-by: Pratyush Yadav 
Reviewed-by: Michael Walle 
Link: https://lore.kernel.org/r/20211029172633.886453-5-tudor.ambarus@microchip.com

mtd: Remove obsolete macros only used by the old nand_ecclayout struct

2021-09-14T17:34:28+00:00

All uses of MTD_MAX_{OOBFREE,ECCPOS}_ENTRIES_LARGE have been removed as
commit ef5eeea6e911 ("mtd: nand: brcm: switch to mtd_ooblayout_ops") and
commit aab616e31d1c ("mtd: kill the nand_ecclayout struct") replaced
struct nand_ecclayout by the new mtd_ooblayout_ops interface. Remove
these two macros therefore.

Reported-by: Yi Yang 
Signed-off-by: GONG, Ruiqi 
Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/20210830083356.31702-1-gongruiqi1@huawei.com