linux-kernel - [PATCH RESEND v2 0/7] power_supply: Decrement the device reference counter

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Message-id: <1415113836-26098-1-git-send-email-k.kozlowski@samsung.com>
Date:	Tue, 04 Nov 2014 16:10:29 +0100
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	Linus Walleij <linus.walleij@...aro.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Lee Jones <lee.jones@...aro.org>,
	Sebastian Reichel <sre@...nel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Lv Zheng <lv.zheng@...el.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-pm@...r.kernel.org
Cc:	Anton Vorontsov <anton@...msg.org>, Pavel Machek <pavel@....cz>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Subject: [PATCH RESEND v2 0/7] power_supply: Decrement the device reference
 counter

Hi,


Resending with some new acks.
Whole patchset should be taken at once (everything depends on patch 1).
Depends on [1].


Changes since v1:
=================
1. Remove check for non-NULL in power_supply_put (suggested by
   Pavel Machek).
2. Add Pavel Machek's ack.


Description:
============
The reference counter of device allocated for power supply was
incremented with each call to power_supply_get_by_name() and
power_supply_get_by_phandle().

Add a symmetric 'put' operation so the device could be released after
final put_device() call during supply unregistering.


Rebased on next-20141104 + mine [1] patchset.
Tested on Trats2 board (max77693 + charger manager).

Kindly asking for reviewing and testing other drivers.

Best regards,
Krzysztof


[1] power_supply: Add API for safe access of get_property-like function attrs
https://lkml.org/lkml/2014/11/4/527


Krzysztof Kozlowski (7):
  power_supply: Add power_supply_put for decrementing device reference
    counter
  power: charger-manager: Decrement the power supply's device reference
    counter
  x86/olpc/xo1/sci: Use newly added power_supply_put API
  x86/olpc/xo15/sci: Use newly added power_supply_put API
  power: 88pm860x_charger: Decrement the power supply's device reference
    counter
  power: bq2415x_charger: Decrement the power supply's device reference
    counter
  mfd: ab8500: Decrement the power supply's device reference counter

 arch/x86/platform/olpc/olpc-xo1-sci.c  |  4 +-
 arch/x86/platform/olpc/olpc-xo15-sci.c |  4 +-
 drivers/mfd/ab8500-sysctrl.c           |  2 +
 drivers/power/88pm860x_charger.c       | 11 +++++-
 drivers/power/bq2415x_charger.c        |  6 ++-
 drivers/power/charger-manager.c        | 70 +++++++++++++++++++++++-----------
 drivers/power/power_supply_core.c      | 38 ++++++++++++++++++
 include/linux/power_supply.h           |  1 +
 8 files changed, 106 insertions(+), 30 deletions(-)

-- 
1.9.1

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