linux-kernel - [PATCH v3 0/3] i2c: introduce devm_i2c_new

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Date:   Wed, 13 Dec 2017 20:02:33 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Bartosz Golaszewski <brgl@...ev.pl>,
        Wolfram Sang <wsa@...-dreams.de>, Peter Rosin <peda@...ntia.se>
Cc:     "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH v3 0/3] i2c: introduce devm_i2c_new_dummy and use it in at24
 driver

i2c_new_dummy is typically called from the probe function of the
driver for the primary i2c client. It requires calls to
i2c_unregister_device in the error path of the probe function and
in the remove function.
This can be simplified by introducing a device-managed version.

Make at24 driver the first user of the new function.

Changes in v2:
- add change to i2c core to make a version of i2c_new_device
  available which returns an ERR_PTR instead of NULL in error case
- few minor improvements

Changes in v3:
- rename _i2c_new_device to __i2c_new_device

Heiner Kallweit (3):
  i2c: core: improve return value handling of i2c_new_device and i2c_new_dummy
  i2c: core: add device-managed version of i2c_new_dummy
  eeprom: at24: switch to device-managed version of i2c_new_dummy

 Documentation/driver-model/devres.txt |  3 ++
 drivers/i2c/i2c-core-base.c           | 94 ++++++++++++++++++++++++++++-------
 drivers/misc/eeprom/at24.c            | 31 ++++--------
 include/linux/i2c.h                   |  3 ++
 4 files changed, 94 insertions(+), 37 deletions(-)

-- 
2.15.1