linux-toradex.git/drivers/mtd/devices, branch v6.9

fs,block: yield devices early

2024-03-27T12:17:15+00:00

Currently a device is only really released once the umount returns to
userspace due to how file closing works. That ultimately could cause
an old umount assumption to be violated that concurrent umount and mount
don't fail. So an exclusively held device with a temporary holder should
be yielded before the filesystem is gone. Add a helper that allows
callers to do that. This also allows us to remove the two holder ops
that Linus wasn't excited about.

Link: https://lore.kernel.org/r/20240326-vfs-bdev-end_holder-v1-1-20af85202918@kernel.org
Fixes: f3a608827d1f ("bdev: open block device as files") # mainline only
Reviewed-by: Christoph Hellwig 
Reviewed-by: Jan Kara 
Suggested-by: Linus Torvalds 
Signed-off-by: Christian Brauner

Merge tag 'spi-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

2024-03-13T18:07:37+00:00

Pull spi updates from Mark Brown:
 "This release sees some exciting changes from David Lechner which
  implements some optimisations that have been talked about for a long
  time which allows client drivers to pre-prepare SPI messages for
  repeated or low latency use. This lets us move work out of latency
  sensitive paths and avoid repeating work for frequently performed
  operations. As well as being useful in itself this will also be used
  in future to allow controllers to directly trigger SPI operations (eg,
  from interrupts).

  Otherwise this release has mostly been focused on cleanups, plus a
  couple of new devices:

   - Support for pre-optimising messages

   - A big set of updates from Uwe Kleine-König moving drivers to use
     APIs with more modern terminology for controllers

   - Major overhaul of the s3c64xx driver

   - Support for Google GS101 and Samsung Exynos850"

* tag 'spi-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (122 commits)
  spi: Introduce SPI_INVALID_CS and is_valid_cs()
  spi: Fix types of the last chip select storage variables
  spi: Consistently use BIT for cs_index_mask
  spi: Exctract spi_dev_check_cs() helper
  spi: Exctract spi_set_all_cs_unused() helper
  spi: s3c64xx: switch exynos850 to new port config data
  spi: s3c64xx: switch gs101 to new port config data
  spi: s3c64xx: deprecate fifo_lvl_mask, rx_lvl_offset and port_id
  spi: s3c64xx: get rid of the OF alias ID dependency
  spi: s3c64xx: introduce s3c64xx_spi_set_port_id()
  spi: s3c64xx: let the SPI core determine the bus number
  spi: s3c64xx: allow FIFO depth to be determined from the compatible
  spi: s3c64xx: retrieve the FIFO depth from the device tree
  spi: s3c64xx: determine the fifo depth only once
  spi: s3c64xx: allow full FIFO masks
  spi: s3c64xx: define a magic value
  spi: dt-bindings: introduce FIFO depth properties
  spi: axi-spi-engine: use struct_size() macro
  spi: axi-spi-engine: use __counted_by() attribute
  spi: axi-spi-engine: remove p from struct spi_engine_message_state
  ...

block2mtd: port device access to files

2024-02-25T11:05:24+00:00

Link: https://lore.kernel.org/r/20240123-vfs-bdev-file-v2-14-adbd023e19cc@kernel.org
Reviewed-by: Jan Kara 
Signed-off-by: Christian Brauner

mtd: dataflash: Follow renaming of SPI "master" to "controller"

2024-02-08T11:54:44+00:00

In commit 8caab75fd2c2 ("spi: Generalize SPI "master" to "controller"")
some functions and struct members were renamed. To not break all drivers
compatibility macros were provided.

To be able to remove these compatibility macros push the renaming into
this driver.

Acked-by: Miquel Raynal 
Acked-by: Jonathan Cameron 
Signed-off-by: Uwe Kleine-König 
Link: https://lore.kernel.org/r/38bf50b391c117621e406fa8cd00c4daef78615c.1707324794.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown

Merge tag 'mtd/for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux

2023-11-04T21:04:30+00:00

Pull mtd updates from Miquel Raynal:
 "The main set of changes is related to Uwe's work converting platform
  remove callbacks to return void. Comes next (in number of changes)
  Kees' additional structures annotations to improve the sanitizers. The
  usual amount of cleanups apply.

  About the more substancial contribution, one main function of the
  partitions core could return an error which was not checked, this is
  now fixed. On the bindings side, fixed partitions can now have a
  compression property. Finally, an erroneous situation is now always
  avoided in the MAP RAM driver.

  CFI:

   - A several years old byte swap has been fixed.

  NAND:

   - The subsystem has, as usual, seen a bit of cleanup being done this
     cycle, typically return values of platform_get_irq() and
     devm_kasprintf(). There is also a better ECC check in the Arasan
     driver. This comes with smaller misc changes.

   - In the SPI-NAND world there is now support for Foresee F35SQA002G,
     Winbond W25N and XTX XT26 chips.

  SPI NOR:

   - For SPI NOR we cleaned the flash info entries in order to have them
     slimmer and self explanatory. In order to make the entries as slim
     as possible, we introduced sane default values so that the actual
     flash entries don't need to specify them. We now use a flexible
     macro to specify the flash ID instead of the previous INFOx()
     macros that had hardcoded ID lengths.

     Instead of:

         { "w25q512nwm", INFO(0xef8020, 0, 64 * 1024, 0)
                 OTP_INFO(256, 3, 0x1000, 0x1000) },

     We now use:

         .id = SNOR_ID(0xef, 0x80, 0x20),
         .name = "w25q512nwm",
         .otp = SNOR_OTP(256, 3, 0x1000, 0x1000),

   - We also removed some flash entries: the very old Catalyst SPI
     EEPROMs that were introduced once with the SPI-NOR subsystem, and a
     Fujitsu MRAM. Both should use the at25 EEPROM driver. The latter
     even has device tree bindings for the at25 driver.

   - We made sure that the conversion didn't introduce any unwanted
     changes by comparing the .rodata segment before and after the
     conversion. The patches landed in linux-next immediately after
     v6.6-rc2, we haven't seen any regressions yet.

   - Apart of the autumn cleaning we introduced a new flash entry,
     at25ff321a, and added block protection support for mt25qu512a"

* tag 'mtd/for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (91 commits)
  mtd: cfi_cmdset_0001: Byte swap OTP info
  mtd: rawnand: meson: check return value of devm_kasprintf()
  mtd: rawnand: intel: check return value of devm_kasprintf()
  mtd: rawnand: sh_flctl: Convert to module_platform_driver()
  mtd: spi-nor: micron-st: use SFDP table for mt25qu512a
  mtd: spi-nor: micron-st: enable lock/unlock for mt25qu512a
  mtd: rawnand: Remove unused of_gpio.h inclusion
  mtd: spinand: Add support for XTX XT26xxxDxxxxx
  mtd: spinand: winbond: add support for serial NAND flash
  mtd: rawnand: cadence: Annotate struct cdns_nand_chip with __counted_by
  mtd: rawnand: Annotate struct mtk_nfc_nand_chip with __counted_by
  mtd: spinand: add support for FORESEE F35SQA002G
  mtd: rawnand: rockchip: Use struct_size()
  mtd: rawnand: arasan: Include ECC syndrome along with in-band data while checking for ECC failure
  mtd: Use device_get_match_data()
  mtd: spi-nor: nxp-spifi: Convert to platform remove callback returning void
  mtd: spi-nor: hisi-sfc: Convert to platform remove callback returning void
  mtd: maps: sun_uflash: Convert to platform remove callback returning void
  mtd: maps: sa1100-flash: Convert to platform remove callback returning void
  mtd: maps: pxa2xx-flash: Convert to platform remove callback returning void
  ...

mtd: block2mtd: Convert to bdev_open_by_dev/path()

2023-10-28T11:29:18+00:00

Convert block2mtd to use bdev_open_by_dev() and bdev_open_by_path() and
pass the handle around.

CC: Joern Engel 
CC: linux-mtd@lists.infradead.org
Acked-by: Christoph Hellwig 
Acked-by: Christian Brauner 
Signed-off-by: Jan Kara 
Link: https://lore.kernel.org/r/20230927093442.25915-12-jack@suse.cz
Signed-off-by: Christian Brauner

mtd: st_spi_fsm: Convert to platform remove callback returning void

2023-10-16T08:56:47+00:00

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Miquel Raynal 
Acked-by: Tudor Ambarus 
Link: https://lore.kernel.org/linux-mtd/20231008200143.196369-9-u.kleine-koenig@pengutronix.de

mtd: spear_smi: Convert to platform remove callback returning void

2023-10-16T08:56:47+00:00

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Miquel Raynal 
Acked-by: Tudor Ambarus 
Link: https://lore.kernel.org/linux-mtd/20231008200143.196369-8-u.kleine-koenig@pengutronix.de

mtd: powernv_flash: Convert to platform remove callback returning void

2023-10-16T08:56:47+00:00

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Miquel Raynal 
Acked-by: Tudor Ambarus 
Link: https://lore.kernel.org/linux-mtd/20231008200143.196369-7-u.kleine-koenig@pengutronix.de

mtd: phram: Convert to platform remove callback returning void

2023-10-16T08:56:47+00:00

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Miquel Raynal 
Acked-by: Tudor Ambarus 
Link: https://lore.kernel.org/linux-mtd/20231008200143.196369-6-u.kleine-koenig@pengutronix.de