linux-kernel - [PATCH 0/5] i2c: smbus: add unlocked __i2c_smbus

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Date:   Wed, 20 Jun 2018 10:51:52 +0200
From:   Peter Rosin <peda@...ntia.se>
To:     linux-kernel@...r.kernel.org
Cc:     Peter Rosin <peda@...ntia.se>, Wolfram Sang <wsa@...-dreams.de>,
        Vadim Pasternak <vadimp@...lanox.com>,
        Michael Shych <michaelsh@...lanox.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Akinobu Mita <akinobu.mita@...il.com>,
        Jean Delvare <jdelvare@...e.com>, linux-i2c@...r.kernel.org
Subject: [PATCH 0/5] i2c: smbus: add unlocked __i2c_smbus_xfer variant

Hi!

There are a couple of users that could benefit from an unlocked variant
of i2c_smbus_xfer. In response to [1] I dusted off an old series that I
have had in a branch for a while that adds such a beast. It also converts
over some users in the i2c-mux department.

There are a couple of remaining candidates in i2c/busses/i2c-amd756-s4882.c
and i2c/busses/i2c-nforce2-s4985.c, but frankly, those are just too nasty.
Why do they unregister the root adapter and then continue to use it? I
dare not touch that code...

Anyway, this series looks like a nice cleanup to me, and the recent sccb
patch from Akinobu Mita could also benefit, as indicated by Wolfram [1].

Cheers,
Peter

[1] https://patchwork.ozlabs.org/patch/928386/#1936016

Peter Rosin (5):
  i2c: smbus: add unlocked __i2c_smbus_xfer variant
  i2c: mux: mlxcpld: make use of __i2c_smbus_xfer
  i2c: mux: pca9541: make use of __i2c_smbus_xfer
  i2c: mux: pca954x: make use of __i2c_smbus_xfer
  i2c: mux: make use of __i2c_smbus_xfer

 drivers/i2c/i2c-core-smbus.c        | 28 ++++++++++-----
 drivers/i2c/i2c-mux.c               |  4 +--
 drivers/i2c/muxes/i2c-mux-mlxcpld.c | 28 +++------------
 drivers/i2c/muxes/i2c-mux-pca9541.c | 69 ++++++-------------------------------
 drivers/i2c/muxes/i2c-mux-pca954x.c | 27 +++------------
 include/linux/i2c.h                 | 11 ++++--
 6 files changed, 49 insertions(+), 118 deletions(-)

-- 
2.11.0