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mtd_read() may return -EUCLEAN in case of corrected bit-flips.This
particular condition should not be treated like an error.
Signed-off-by: Bang Li <libang.linuxer@gmail.com>
Fixes: e47f68587b82 ("mtd: check for max_bitflips in mtd_read_oob()")
Cc: <stable@vger.kernel.org> # v3.7
Acked-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230328163012.4264-1-libang.linuxer@gmail.com
Remove the EDO mode support from as the FMC2 controller does not
support the feature.
Signed-off-by: Christophe Kerello <christophe.kerello@foss.st.com>
Fixes: 2cd457f328c1 ("mtd: rawnand: stm32_fmc2: add STM32 FMC2 NAND flash controller driver")
Cc: stable@vger.kernel.org #v5.4+
Reviewed-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230328155819.225521-2-christophe.kerello@foss.st.com
We need the fixes in here for testing, as well as the driver core
changes for documentation updates to build on.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here are 3 small changes for 6.3-rc5 semi-related to driver core stuff:
- documentation update where we move the security_bugs file to a more
relevant location.
- mdt/spi-nor debugfs memory leak fix that's been floating around for
a long time and acked by the maintainer
- cacheinfo bugfix for a regression in 6.3-rc1
All have been in linux-next with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are three small changes for 6.3-rc5 semi-related to driver core
stuff:
- documentation update where we move the security_bugs file to a more
relevant location.
- mdt/spi-nor debugfs memory leak fix that's been floating around for
a long time and acked by the maintainer
- cacheinfo bugfix for a regression in 6.3-rc1
All have been in linux-next with no reported problems"
* tag 'driver-core-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
cacheinfo: Fix LLC is not exported through sysfs
Documentation/security-bugs: move from admin-guide/ to process/
mtd: spi-nor: fix memory leak when using debugfs_lookup()
Following process will make ubi attaching failed since commit
1b42b1a36fc946 ("ubi: ensure that VID header offset ... size"):
ID="0xec,0xa1,0x00,0x15" # 128M 128KB 2KB
modprobe nandsim id_bytes=$ID
flash_eraseall /dev/mtd0
modprobe ubi mtd="0,2048" # set vid_hdr offset as 2048 (one page)
(dmesg):
ubi0 error: ubi_attach_mtd_dev [ubi]: VID header offset 2048 too large.
UBI error: cannot attach mtd0
UBI error: cannot initialize UBI, error -22
Rework original solution, the key point is making sure
'vid_hdr_shift + UBI_VID_HDR_SIZE < ubi->vid_hdr_alsize',
so we should check vid_hdr_shift rather not vid_hdr_offset.
Then, ubi still support (sub)page aligined VID header offset.
Fixes: 1b42b1a36fc946 ("ubi: ensure that VID header offset ... size")
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Tested-by: Nicolas Schichan <nschichan@freebox.fr>
Tested-by: Miquel Raynal <miquel.raynal@bootlin.com> # v5.10, v4.19
Signed-off-by: Richard Weinberger <richard@nod.at>
On devices featuring several banks, the Read While Write (RWW) feature
is here to improve the overall performance when performing parallel
reads and writes at different locations (different banks). The following
constraints have to be taken into account:
1#: A single operation can be performed in a given bank.
2#: Only a single program or erase operation can happen on the entire
chip (common hardware limitation to limit costs)
3#: Reads must remain serialized even though reads crossing bank
boundaries are allowed.
4#: The I/O bus is unique and thus is the most constrained resource, all
spi-nor operations requiring access to the spi bus (through the spi
controller) must be serialized until the bus exchanges are over. So
we must ensure a single operation can be "sent" at a time.
5#: Any other operation that would not be either a read or a write or an
erase is considered requiring access to the full chip and cannot be
parallelized, we then need to ensure the full chip is in the idle
state when this occurs.
All these constraints can easily be managed with a proper locking model:
1#: Is enforced by a bitfield of the in-use banks, so that only a single
operation can happen in a specific bank at any time.
2#: Is handled by the ongoing_pe boolean which is set before any write
or erase, and is released only at the very end of the
operation. This way, no other destructive operation on the chip can
start during this time frame.
3#: An ongoing_rd boolean allows to track the ongoing reads, so that
only one can be performed at a time.
4#: An ongoing_io boolean is introduced in order to capture and serialize
bus accessed. This is the one being released "sooner" than before,
because we only need to protect the chip against other SPI accesses
during the I/O phase, which for the destructive operations is the
beginning of the operation (when we send the command cycles and
possibly the data), while the second part of the operation (the
erase delay or the programmation delay) is when we can do something
else in another bank.
5#: Is handled by the three booleans presented above, if any of them is
set, the chip is not yet ready for the operation and must wait.
All these internal variables are protected by the existing lock, so that
changes in this structure are atomic. The serialization is handled with
a wait queue.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20230328154105.448540-8-miquel.raynal@bootlin.com
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Introduce a new (no SFDP) flag for the feature that we are about to
support: Read While Write. This means, if the chip has several banks and
supports RWW, once a page of data to write has been transferred into the
chip's internal SRAM, another read operation happening on a different
bank can be performed during the tPROG delay.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20230328154105.448540-7-miquel.raynal@bootlin.com
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
This commit alone just introduces two new "prepare and lock" pairs of
helpers which do the exact same thing as before. They will soon be
improved in a followup commit which actually brings the logic, but I
figured out it was more readable to do it this way.
One new pair is suffixed _pe which stands for "program and erase" and
hence is being called by spi_nor_write() and spi_nor_erase().
The other pair is suffixed _rd which stands for "read" and hence is
being called by spi_nor_read().
One note however, these extra helpers will need to know the operation
range, so they come with two new parameters to define it. Otherwise
there is no functional change.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20230328154105.448540-6-miquel.raynal@bootlin.com
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
While this operation will remain a single function call in the end,
let's extract the logic of the [un]prepare calls within their own static
helper. We will soon add new flavors of the *_[un]prepare_and_[un]lock()
helpers, having the preparation logic outside will save us from duplicating
code over and over again.
There is no functional change.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20230328154105.448540-5-miquel.raynal@bootlin.com
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
The ->prepare()/->unprepare() hooks are now legacy, we no longer accept
new drivers supporting them. The only remaining controllers using them
acquires a per-chip mutex, which should not interfere with the rest of
the operation done in the core. As a result, we should be safe to
reorganize these helpers to first perform the preparation, before
acquiring the core locks. This is necessary in order to be able to
improve the locking mechanism in the core (coming next). No side effects
are expected.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20230328154105.448540-4-miquel.raynal@bootlin.com
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Most of the chips on the market only feature a single bank. However, new
chips may support more than a single bank, with the possibility to
parallelize some operations. Let's introduce an INFOB() macro which also
takes a n_bank parameter.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Link: https://lore.kernel.org/r/20230328154105.448540-3-miquel.raynal@bootlin.com
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
SPI NOR chips are made of pages, which gathered in small groups make
(erase) sectors. Sectors, gathered together, make banks inside the
chip. Until now, there was only one bank per device supported, but we
are about to introduce support for new chips featuring several banks (up
to 4 so far) where different operations may happen in parallel.
Let's allow describing these additional bank parameters, and let's do
this independently of any other value (like the number of sectors) with
an absolute value.
By default we consider that all chips have a single bank.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Link: https://lore.kernel.org/r/20230328154105.448540-2-miquel.raynal@bootlin.com
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
struct class should never be modified in a sysfs callback as there is
nothing in the structure to modify, and frankly, the structure is almost
never used in a sysfs callback, so mark it as constant to allow struct
class to be moved to read-only memory.
While we are touching all class sysfs callbacks also mark the attribute
as constant as it can not be modified. The bonding code still uses this
structure so it can not be removed from the function callbacks.
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Russ Weight <russell.h.weight@intel.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Steve French <sfrench@samba.org>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: linux-cifs@vger.kernel.org
Cc: linux-gpio@vger.kernel.org
Cc: linux-mtd@lists.infradead.org
Cc: linux-rdma@vger.kernel.org
Cc: linux-s390@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: netdev@vger.kernel.org
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20230325084537.3622280-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
clang with W=1 reports
drivers/mtd/lpddr/lpddr_cmds.c:409:31: error: variable
'words' set but not used [-Werror,-Wunused-but-set-variable]
int ret, wbufsize, word_gap, words;
^
This variable is not used so remove it.
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230328000620.1778033-1-trix@redhat.com
clang with W=1 reports
drivers/mtd/nand/raw/mxc_nand.c:1602:19: error: unused function
'is_imx51_nfc' [-Werror,-Wunused-function]
static inline int is_imx51_nfc(struct mxc_nand_host *host)
^
drivers/mtd/nand/raw/mxc_nand.c:1607:19: error: unused function
'is_imx53_nfc' [-Werror,-Wunused-function]
static inline int is_imx53_nfc(struct mxc_nand_host *host)
^
These functions are not used, so remove them.
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230321114638.1782086-1-trix@redhat.com
It is preferred to use typed property access functions (i.e.
of_property_read_<type> functions) rather than low-level
of_get_property/of_find_property functions for reading properties. As
part of this, convert of_get_property/of_find_property calls to the
recently added of_property_present() helper when we just want to test
for presence of a property and nothing more.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230310144715.1543926-1-robh@kernel.org
According to the ONFI specification, bit 0 of 'SDR timing mode support'
(bytes 129-130) "shall be 1". That means the NAND supports at least
timing mode 0.
NAND chip Hynix H27U4G8F2GDA-BI (at least) is reading a 0 on this field
which makes nand_choose_best_sdr_timings() return with error and the
probe function to eventually fail.
Given that sdr_timing_modes bit 0 must be 1 by specification, force
it in case the NAND reports it is not set. This is a safe assumption
because the mode 0 is the minimum (safer) set of timings that the
NAND can work with.
Signed-off-by: Hector Palacios <hector.palacios@digi.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230223165104.525852-1-hector.palacios@digi.com
Link: https://lore.kernel.org/linux-mtd/20230310080609.1930869-1-hector.palacios@digi.com
It is preferred to use typed property access functions (i.e.
of_property_read_<type> functions) rather than low-level
of_get_property/of_find_property functions for reading properties.
Convert reading boolean properties to to of_property_read_bool().
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230310144716.1543995-1-robh@kernel.org
'info_buf' memory is cached and driver polls ECC bit in it. This bit
is set by the NAND controller. If 'usleep_range()' returns before device
sets this bit, 'info_buf' will be cached and driver won't see update of
this bit and will loop forever.
Fixes: 8fae856c5350 ("mtd: rawnand: meson: add support for Amlogic NAND flash controller")
Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/d4ef0bd6-816e-f6fa-9385-f05f775f0ae2@sberdevices.ru
The continuous read support added recently makes nandsim
unhappy. Indeed, all the supported commands should be re-encoded into
internal commands, so of course there is currently no support for the
commands and patterns needed for continuous reads to work.
I tried to add support for them but nandsim (which is more a tool to
develop/debug upper layers rather than the raw NAND core) suffers from a
big limitation: it's internal parser needs to know what exact operation
is happening when the address cycles are performed. The research is then
sequential from the start up to the address cycles, but does not check
what's coming next even though the information is available. This is a
limitation which is related to the old API used by the core which kind
of forced the controllers to guess what operation was being performed
rather early. Today the core uses a more transparent API called
->exec_op() which no longer requires controller drivers to do any more
guessing, but despite being updated to ->exec_op(), nandsim is still a
bit constrained on this regard and thus cannot handle sequential page
reads because the start sequence beginning is identical to a regular
page read.
If the internal algorithm is updated some day, it should be possible to
make it support sequential page reads by adding something like:
/* Large page devices continuous read page start */
{OPT_LARGEPAGE, {STATE_CMD_READ0, STATE_ADDR_PAGE, STATE_CMD_READSTART,
STATE_CMD_READCACHESEQ | ACTION_CPY, STATE_DATAOUT,
STATE_READY}},
/* Large page devices continuous read page continue */
{OPT_LARGEPAGE, {STATE_CMD_READCACHESEQ | ACTION_CPY_NEXT, STATE_DATAOUT,
STATE_READY}},
/* Large page devices continuous read page end */
{OPT_LARGEPAGE, {STATE_CMD_READCACHEEND | ACTION_CPY_NEXT, STATE_DATAOUT,
STATE_READY}},
For now, we just return -EOPNOTSUPP when the core asks controller
drivers if they support the feature in order to prevent any further use
of these opcodes.
Note: This is a hack, ->exec_op() is not supposed to check against the
COMMAND opcodes unless _really_ needed.
Fixes: 003fe4b9545b ("mtd: rawnand: Support for sequential cache reads")
Reported-by: Zhihao Cheng <chengzhihao1@huawei.com>
Link: https://lore.kernel.org/linux-mtd/fd34fe55-7f4a-030d-8653-9bb9cf08410d@huawei.com/
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Tested-by: Zhihao Cheng <chengzhihao1@huawei.com>
Acked-by: Richard Weinberger <richard@nod.at>
Link: https://lore.kernel.org/linux-mtd/20230310085452.1368716-1-miquel.raynal@bootlin.com
There is no need to manually set the owner of a struct class, as the
registering function does it automatically, so remove all of the
explicit settings from various drivers that did so as it is unneeded.
This allows us to remove this pointer entirely from this structure going
forward.
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230313181843.1207845-2-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently Read Any Register op is used to read volatile registers without
any dummy cycles, but the op requires dummy cycles depending on register
type (volatiler or non-volatile), device family, and device configuration.
Add 'ndummy' argument to RD_ANY_REG_OP macro to support other use cases.
Suggested-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Link: https://lore.kernel.org/r/03756e9e3ac41d2016a71d2afb702398dd0b19ed.1677557525.git.Takahiro.Kuwano@infineon.com
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
* final coversions of drivers away from deprecated .probe
* make .probe_new the standard probe and convert I2C core to use it
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Merge tag 'i2c-for-6.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
"This marks the end of a transition to let I2C have the same probe
semantics as other subsystems. Uwe took care that no drivers in the
current tree nor in -next use the deprecated .probe call. So, it is a
good time to switch to the new, standard semantics now.
There is also a regression fix:
- regression fix for the notifier handling of the I2C core
- final coversions of drivers away from deprecated .probe
- make .probe_new the standard probe and convert I2C core to use it
* tag 'i2c-for-6.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: dev: Fix bus callback return values
i2c: Convert drivers to new .probe() callback
i2c: mux: Convert all drivers to new .probe() callback
i2c: Switch .probe() to not take an id parameter
media: i2c: ov2685: convert to i2c's .probe_new()
media: i2c: ov5695: convert to i2c's .probe_new()
w1: ds2482: Convert to i2c's .probe_new()
serial: sc16is7xx: Convert to i2c's .probe_new()
mtd: maps: pismo: Convert to i2c's .probe_new()
misc: ad525x_dpot-i2c: Convert to i2c's .probe_new()
Switching to BLK_MQ_F_BLOCKING wrongly removed the call to
blk_mq_end_request(). Add it back to have our IOs finished
Fixes: 91cc8fbcc8c7 ("ubi: block: set BLK_MQ_F_BLOCKING")
Analyzed-by: Linus Torvalds <torvalds@linux-foundation.org>
Reported-by: Daniel Palmer <daniel@0x0f.com>
Link: https://lore.kernel.org/linux-mtd/CAHk-=wi29bbBNh3RqJKu3PxzpjDN5D5K17gEVtXrb7-6bfrnMQ@mail.gmail.com/
Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Daniel Palmer <daniel@0x0f.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Supporting multi-cs in spi drivers would require the chip_select & cs_gpiod
members of struct spi_device to be an array. But changing the type of these
members to array would break the spi driver functionality. To make the
transition smoother introduced four new APIs to get/set the
spi->chip_select & spi->cs_gpiod and replaced all spi->chip_select and
spi->cs_gpiod references with get or set API calls.
While adding multi-cs support in further patches the chip_select & cs_gpiod
members of the spi_device structure would be converted to arrays & the
"idx" parameter of the APIs would be used as array index i.e.,
spi->chip_select[idx] & spi->cs_gpiod[idx] respectively.
Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@amd.com>
Reviewed-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/167847071245.26.7777775616228465939@mailman-core.alsa-project.org
Signed-off-by: Mark Brown <broonie@kernel.org>
The probe function doesn't make use of the i2c_device_id * parameter so it
can be trivially converted.
Acked-by: Richard Weinberger <richard@nod.at>
Link: https://lore.kernel.org/lkml/20221118224540.619276-497-uwe@kleine-koenig.org
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Nvmem producer config ID "-1" is actually defined, so use the definition
rather than hardcoding it with a magic value.
Suggested-by: Michael Walle <michael@walle.cc>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/linux-mtd/20230307192536.470997-1-miquel.raynal@bootlin.com
* Prepare mtd_otp_nvmem_add() to handle -EPROBE_DEFER
* Fix error path for nvmem provider
* Fix nvmem error reporting
* Provide unique name for nvmem device
These changes are expected to be pulled before applying nvmem layouts
support in order to get a fully working support in all situations.
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Merge tag 'mtd/core-fixes-before-nvmem-layouts-for-6.4' into mtd/next
Core MTD changes:
* Prepare mtd_otp_nvmem_add() to handle -EPROBE_DEFER
* Fix error path for nvmem provider
* Fix nvmem error reporting
* Provide unique name for nvmem device
These changes are expected to be pulled before applying nvmem layouts
support in order to get a fully working support in all situations.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Since commit 8b41fc4454e ("kbuild: create modules.builtin without
Makefile.modbuiltin or tristate.conf"), MODULE_LICENSE declarations
are used to identify modules. As a consequence, uses of the macro
in non-modules will cause modprobe to misidentify their containing
object file as a module when it is not (false positives), and modprobe
might succeed rather than failing with a suitable error message.
So remove it in the files in this commit, none of which can be built as
modules.
Signed-off-by: Nick Alcock <nick.alcock@oracle.com>
Suggested-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: linux-modules@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Hitomi Hasegawa <hasegawa-hitomi@fujitsu.com>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230224150811.80316-19-nick.alcock@oracle.com
NVMEM soon will get the ability for nvmem layouts and these might
not be ready when nvmem_register() is called and thus it might
return -EPROBE_DEFER. Don't print the error message in this case.
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230308082021.870459-4-michael@walle.cc
If mtd_otp_nvmem_add() fails, the partitions won't be removed
because there is simply no call to del_mtd_partitions().
Unfortunately, add_mtd_partitions() will print all partitions to
the kernel console. If mtd_otp_nvmem_add() returns -EPROBE_DEFER
this would print the partitions multiple times to the kernel
console. Instead move mtd_otp_nvmem_add() to the beginning of the
function.
Fixes: 4b361cfa8624 ("mtd: core: add OTP nvmem provider support")
Cc: stable@vger.kernel.org
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230308082021.870459-3-michael@walle.cc
The master MTD will only have an associated device if
CONFIG_MTD_PARTITIONED_MASTER is set, thus we cannot use dev_err() on
mtd->dev. Instead use the parent device which is the physical flash
memory.
Fixes: 4b361cfa8624 ("mtd: core: add OTP nvmem provider support")
Cc: stable@vger.kernel.org
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230308082021.870459-2-michael@walle.cc
Commit c048b60d39e1 ("mtd: core: provide unique name for nvmem device")
tries to give the nvmem device a unique name, but fails badly if the mtd
device doesn't have a "struct device" associated with it, i.e. if
CONFIG_MTD_PARTITIONED_MASTER is not set. This will result in the name
"(null)-user-otp", which is not unique. It seems the best we can do is
to use the compatible name together with a unique identifier added by
the nvmem subsystem by using NVMEM_DEVID_AUTO.
Fixes: c048b60d39e1 ("mtd: core: provide unique name for nvmem device")
Cc: stable@vger.kernel.org
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230308082021.870459-1-michael@walle.cc
Convert platform_get_resource(), devm_ioremap_resource() to a single
call to devm_platform_get_and_ioremap_resource(), as this is exactly
what this function does.
Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230306144141.15360-1-quic_mdalam@quicinc.com
wait_for_completion_timeout() and readl_poll_timeout() don't handle their
return value the same way.
wait_for_completion_timeout() returns 0 on time out (and >0 in all other
cases)
readl_poll_timeout() returns 0 on success and -ETIMEDOUT upon a timeout.
In order for the error handling path to work in both cases, the logic
against wait_for_completion_timeout() needs to be inverted.
Fixes: 48e6633a9fa2 ("mtd: nand: mxic-ecc: Add Macronix external ECC engine support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/beddbc374557e44ceec897e68c4a5d12764ddbb9.1676459308.git.christophe.jaillet@wanadoo.fr
This structure must be zeroed, because it's field 'hw->core' is used as
'parent' in 'clk_core_fill_parent_index()', but it will be uninitialized.
This happens, because when this struct is not zeroed, pointer 'hw' is
"initialized" by garbage, which is valid pointer, but points to some
garbage. So 'hw' will be dereferenced, but 'core' contains some random
data which will be interpreted as a pointer. The following backtrace is
result of dereference of such pointer:
[ 1.081319] __clk_register+0x414/0x820
[ 1.085113] devm_clk_register+0x64/0xd0
[ 1.088995] meson_nfc_probe+0x258/0x6ec
[ 1.092875] platform_probe+0x70/0xf0
[ 1.096498] really_probe+0xc8/0x3e0
[ 1.100034] __driver_probe_device+0x84/0x190
[ 1.104346] driver_probe_device+0x44/0x120
[ 1.108487] __driver_attach+0xb4/0x220
[ 1.112282] bus_for_each_dev+0x78/0xd0
[ 1.116077] driver_attach+0x2c/0x40
[ 1.119613] bus_add_driver+0x184/0x240
[ 1.123408] driver_register+0x80/0x140
[ 1.127203] __platform_driver_register+0x30/0x40
[ 1.131860] meson_nfc_driver_init+0x24/0x30
Fixes: 1e4d3ba66888 ("mtd: rawnand: meson: fix the clock")
Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230227102425.793841-1-AVKrasnov@sberdevices.ru
Convert platform_get_resource(), devm_ioremap_resource() to a single
call to devm_platform_ioremap_resource(), as this is exactly what this
function does.
Signed-off-by: Ye Xingchen <ye.xingchen@zte.com.cn>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/202302101723563685569@zte.com.cn
When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time. To solve this, remove the
lookup and create the directory on the first device found, and then
remove it when the module is unloaded.
Cc: Tudor Ambarus <tudor.ambarus@microchip.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: linux-mtd@lists.infradead.org
Reviewed-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20230208160230.2179905-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
During the processing of the bgt, if the sync_erase() return -EBUSY
or some other error code in __erase_worker(),schedule_erase() called
again lead to the down_read(ubi->work_sem) hold twice and may get
block by down_write(ubi->work_sem) in ubi_update_fastmap(),
which cause deadlock.
ubi bgt other task
do_work
down_read(&ubi->work_sem) ubi_update_fastmap
erase_worker # Blocked by down_read
__erase_worker down_write(&ubi->work_sem)
schedule_erase
schedule_ubi_work
down_read(&ubi->work_sem)
Fix this by changing input parameter @nested of the schedule_erase() to
'true' to avoid recursively acquiring the down_read(&ubi->work_sem).
Also, fix the incorrect comment about @nested parameter of the
schedule_erase() because when down_write(ubi->work_sem) is held, the
@nested is also need be true.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217093
Fixes: 2e8f08deabbc ("ubi: Fix races around ubi_refill_pools()")
Signed-off-by: ZhaoLong Wang <wangzhaolong1@huawei.com>
Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
JFFS2:
- Fix memory corruption in error path
- Spelling and coding style fixes
UBI:
- Switch to BLK_MQ_F_BLOCKING in ubiblock
- Wire up partent device (for sysfs)
- Multiple UAF bugfixes
- Fix for an infinite loop in WL error path
UBIFS:
- Fix for multiple memory leaks in error paths
- Fixes for wrong space accounting
- Minor cleanups
- Spelling and coding style fixes
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Merge tag 'ubifs-for-linus-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs
Pull jffs2, ubi and ubifs updates from Richard Weinberger:
"JFFS2:
- Fix memory corruption in error path
- Spelling and coding style fixes
UBI:
- Switch to BLK_MQ_F_BLOCKING in ubiblock
- Wire up partent device (for sysfs)
- Multiple UAF bugfixes
- Fix for an infinite loop in WL error path
UBIFS:
- Fix for multiple memory leaks in error paths
- Fixes for wrong space accounting
- Minor cleanups
- Spelling and coding style fixes"
* tag 'ubifs-for-linus-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs: (36 commits)
ubi: block: Fix a possible use-after-free bug in ubiblock_create()
ubifs: make kobj_type structures constant
mtd: ubi: block: wire-up device parent
mtd: ubi: wire-up parent MTD device
ubi: use correct names in function kernel-doc comments
ubi: block: set BLK_MQ_F_BLOCKING
jffs2: Fix list_del corruption if compressors initialized failed
jffs2: Use function instead of macro when initialize compressors
jffs2: fix spelling mistake "neccecary"->"necessary"
ubifs: Fix kernel-doc
ubifs: Fix some kernel-doc comments
UBI: Fastmap: Fix kernel-doc
ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed
ubi: Fix UAF wear-leveling entry in eraseblk_count_seq_show()
ubi: fastmap: Fix missed fm_anchor PEB in wear-leveling after disabling fastmap
ubifs: ubifs_releasepage: Remove ubifs_assert(0) to valid this process
ubifs: ubifs_writepage: Mark page dirty after writing inode failed
ubifs: dirty_cow_znode: Fix memleak in error handling path
ubifs: Re-statistic cleaned znode count if commit failed
ubi: Fix permission display of the debugfs files
...
As usual, there are lots of minor driver changes across SoC platforms
from NXP, Amlogic, AMD Zynq, Mediatek, Qualcomm, Apple and Samsung.
These usually add support for additional chip variations in existing
drivers, but also add features or bugfixes.
The SCMI firmware subsystem gains a unified raw userspace interface
through debugfs, which can be used for validation purposes.
Newly added drivers include:
- New power management drivers for StarFive JH7110, Allwinner D1 and
Renesas RZ/V2M
- A driver for Qualcomm battery and power supply status
- A SoC device driver for identifying Nuvoton WPCM450 chips
- A regulator coupler driver for Mediatek MT81xxv
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Merge tag 'soc-drivers-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC driver updates from Arnd Bergmann:
"As usual, there are lots of minor driver changes across SoC platforms
from NXP, Amlogic, AMD Zynq, Mediatek, Qualcomm, Apple and Samsung.
These usually add support for additional chip variations in existing
drivers, but also add features or bugfixes.
The SCMI firmware subsystem gains a unified raw userspace interface
through debugfs, which can be used for validation purposes.
Newly added drivers include:
- New power management drivers for StarFive JH7110, Allwinner D1 and
Renesas RZ/V2M
- A driver for Qualcomm battery and power supply status
- A SoC device driver for identifying Nuvoton WPCM450 chips
- A regulator coupler driver for Mediatek MT81xxv"
* tag 'soc-drivers-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (165 commits)
power: supply: Introduce Qualcomm PMIC GLINK power supply
soc: apple: rtkit: Do not copy the reg state structure to the stack
soc: sunxi: SUN20I_PPU should depend on PM
memory: renesas-rpc-if: Remove redundant division of dummy
soc: qcom: socinfo: Add IDs for IPQ5332 and its variant
dt-bindings: arm: qcom,ids: Add IDs for IPQ5332 and its variant
dt-bindings: power: qcom,rpmpd: add RPMH_REGULATOR_LEVEL_LOW_SVS_L1
firmware: qcom_scm: Move qcom_scm.h to include/linux/firmware/qcom/
MAINTAINERS: Update qcom CPR maintainer entry
dt-bindings: firmware: document Qualcomm SM8550 SCM
dt-bindings: firmware: qcom,scm: add qcom,scm-sa8775p compatible
soc: qcom: socinfo: Add Soc IDs for IPQ8064 and variants
dt-bindings: arm: qcom,ids: Add Soc IDs for IPQ8064 and variants
soc: qcom: socinfo: Add support for new field in revision 17
soc: qcom: smd-rpm: Add IPQ9574 compatible
soc: qcom: pmic_glink: remove redundant calculation of svid
soc: qcom: stats: Populate all subsystem debugfs files
dt-bindings: soc: qcom,rpmh-rsc: Update to allow for generic nodes
soc: qcom: pmic_glink: add CONFIG_NET/CONFIG_OF dependencies
soc: qcom: pmic_glink: Introduce altmode support
...
* parsers: ofpart: add workaround for #size-cells 0
* dt-bindings: partitions: Fix partition node name pattern
* dataflash: remove duplicate SPI ID table
Raw NAND core changes:
* Check the data only read pattern only once
* Prepare the late addition of supported operation checks
* Support for sequential cache reads
* Fix nand_chip kdoc
Raw NAND driver changes:
* Fsl_elbc: Propagate HW ECC settings to HW
* Marvell: Add missing layouts
* Pasemi: Don't use static data to track per-device state
* Sunxi:
- Fix the size of the last OOB region
- Remove an unnecessary check
- Remove an unnecessary check
- Clean up chips after failed init
- Precompute the ECC_CTL register value
- Embed sunxi_nand_hw_ecc by value
- Update OOB layout to match hardware
* tmio_nand: Remove driver
* vf610_nfc: Use regular comments for functions
SPI-NAND driver changes:
* Add support for AllianceMemory AS5F34G04SND
* Macronix: use scratch buffer for DMA operation
NAND ECC changes:
* Mediatek:
- Add ECC support fot MT7986 IC
- Add compatible for MT7986
- dt-bindings: Split ECC engine with rawnand controller
SPI NOR changes:
* Misc core fixes
SPI NOR driver changes:
* Spansion: Minor fixes
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Merge tag 'mtd/for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull MTD updates from Miquel Raynal:
"MTD changes:
- parsers: ofpart: add workaround for #size-cells 0
- dt-bindings: partitions: Fix partition node name pattern
- dataflash: remove duplicate SPI ID table
Raw NAND core changes:
- Check the data only read pattern only once
- Prepare the late addition of supported operation checks
- Support for sequential cache reads
- Fix nand_chip kdoc
Raw NAND driver changes:
- Fsl_elbc: Propagate HW ECC settings to HW
- Marvell: Add missing layouts
- Pasemi: Don't use static data to track per-device state
- Sunxi:
- Fix the size of the last OOB region
- Remove an unnecessary check
- Remove an unnecessary check
- Clean up chips after failed init
- Precompute the ECC_CTL register value
- Embed sunxi_nand_hw_ecc by value
- Update OOB layout to match hardware
- tmio_nand: Remove driver
- vf610_nfc: Use regular comments for functions
SPI-NAND driver changes:
- Add support for AllianceMemory AS5F34G04SND
- Macronix: use scratch buffer for DMA operation
NAND ECC changes:
- Mediatek:
- Add ECC support fot MT7986 IC
- Add compatible for MT7986
- dt-bindings: Split ECC engine with rawnand controller
SPI NOR changes:
- Misc core fixes
SPI NOR driver changes:
- Spansion: Minor fixes"
* tag 'mtd/for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (33 commits)
mtd: parsers: ofpart: add workaround for #size-cells 0
mtd: rawnand: sunxi: Precompute the ECC_CTL register value
mtd: rawnand: sunxi: Embed sunxi_nand_hw_ecc by value
mtd: rawnand: sunxi: Update OOB layout to match hardware
mtd: spi-nor: Sort headers alphabetically
mtd: spi-nor: Fix shift-out-of-bounds in spi_nor_set_erase_type
mtd: nand: ecc-mtk: Add ECC support fot MT7986 IC
dt-bindings: mtd: mediatek,nand-ecc-engine: Add compatible for MT7986
dt-bindings: mtd: Split ECC engine with rawnand controller
mtd: rawnand: fsl_elbc: Propagate HW ECC settings to HW
mtd: spinand: Add support for AllianceMemory AS5F34G04SND
dt-bindings: mtd: partitions: Fix partition node name pattern
mtd: spi-nor: Create macros to define chip IDs and geometries
mtd: spi-nor: spansion: Make CFRx reg fields generic
mtd: spi-nor: spansion: Consider reserved bits in CFR5 register
mtd: spi-nor: core: fix implicit declaration warning
mtd: spinand: macronix: use scratch buffer for DMA operation
mtd: rawnand: Fix nand_chip kdoc
mtd: rawnand: vf610_nfc: use regular comments for functions
mtd: rawnand: Support for sequential cache reads
...
