lkml.org 
[lkml]   [2018]   [Sep]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH v3 00/21] nvmem: rework of the subsystem for non-DT users
2018-09-12 9:51 GMT+02:00 Bartosz Golaszewski <brgl@bgdev.pl>:
> From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
>
> This series contains nvmem framework changes prerequisite for further
> development of my previous series[1] that aims at removal of the
> platform data struct from at24 EEPROM driver.
>
> The patches are conceptually split into a couple groups.
>
> First five patches fix issues with existing issues.
>
> Patch 6 switches the nvmem providers to using kref which is necessary
> for removal of the return value from nvmem_unregister(). This is an
> approach similar to the one used in the clock framework where the
> provider is only removed after the last reference to it is dropped.
>
> Patches 7-9 convert last remaining users of nvmem_unregister() who
> still check its return value to using devm_nvmem_unregister() and
> patch 10 changes its return value from int to void.
>
> Patches 11-14 introduce the most significant changes of this series:
> we remove the global cell list, add support for static cell definitions
> external to the provider structure, change the way DT lookup works and
> allow to associate resources and consumers using lookup tables. The way
> nvmem_cell_get() for non-DT users is changed but there are no current
> users and it's currently broken anyway (cell being removed after a call
> to nvmem_cell_put()).
>
> Patch 15 updates the documentation.
>
> Patch 16 adds support for notifiers to nvmem so that users can
> subscribe for events such as device or cell registration or removal.
>
> Patches 17 & 18 add some minor improvements to the codebase.
>
> Last three patches contain fixes to warnings emitted by checkpatch.
> It's a good moment to add them if we're already touching a big part
> of the subsystem's code.
>
> Tested both DT and non-DT use cases.
>
> [1] https://lkml.org/lkml/2018/8/10/149
>
> v1 -> v2:
> - extended the lookup structure with a proper con_id independent from the
> cell name defined in the cell definition table
> - added a patch that makes the naming convention for the cell name argument
> in the nvmem_cell_get() family of functions consistent
> - there were two users of nvmem_unregister() that still checked the return
> value, now switched to devm_nvmem_register()
> - fixed build failures reported by kbuild test robot
>
> v2 -> v3:
> - dropped the patch removing unused APIs and introduced changes on top of
> existing code instead
> - fixed nvmem provider reference decreasing in error paths
> - added checkpatch fixes
> - removed nvmem-machine.h and distributed new definitions among existing
> consumer and provider headers
> - reordered patches thematically
> - added more patches fixing issues in existing codebase
>
> Bartosz Golaszewski (21):
> nvmem: provide nvmem_dev_name()
> nvmem: remove the name field from struct nvmem_device
> nvmem: use list_for_each_entry_safe in nvmem_device_remove_all_cells()
> nvmem: remove a stray newline
> nvmem: check the return value of nvmem_add_cells()
> nvmem: use kref
> nvmem: lpc18xx_eeprom: use devm_nvmem_register()
> nvmem: sunxi_sid: use devm_nvmem_register()
> nvmem: mxs-ocotp: use devm_nvmem_register()
> nvmem: change the signature of nvmem_unregister()
> nvmem: remove the global cell list
> nvmem: add support for cell info
> nvmem: resolve cells from DT at registration time
> nvmem: add support for cell lookups from machine code
> Documentation: nvmem: document cell tables and lookup entries
> nvmem: add a notifier chain
> nvmem: use SPDX license identifiers
> nvmem: make the naming of arguments in nvmem_cell_get() consistent
> nvmem: use EOPNOTSUPP instead of ENOSYS
> nvmem: fix commenting style
> nvmem: use octal permissions instead of constants
>
> Documentation/nvmem/nvmem.txt | 31 ++
> drivers/nvmem/core.c | 527 ++++++++++++++++++++++-----------
> drivers/nvmem/lpc18xx_eeprom.c | 6 +-
> drivers/nvmem/mxs-ocotp.c | 4 +-
> drivers/nvmem/sunxi_sid.c | 20 +-
> include/linux/nvmem-consumer.h | 100 +++++--
> include/linux/nvmem-provider.h | 49 +--
> 7 files changed, 497 insertions(+), 240 deletions(-)
>
> --
> 2.18.0
>

Superseded by v4. This time I made sure all modified drivers build
fine without warnings.

Bart

\
 
 \ /
  Last update: 2018-09-14 16:43    [W:0.215 / U:5.544 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site