linux-kernel - [PATCH v2 0/3] phy: core: Re-work runtime PM deployment and fix an issue

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Date:   Wed, 20 Dec 2017 15:09:17 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Kishon Vijay Abraham I <kishon@...com>,
        linux-kernel@...r.kernel.org
Cc:     "Rafael J . Wysocki" <rjw@...ysocki.net>, linux-pm@...r.kernel.org,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-renesas-soc@...r.kernel.org,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: [PATCH v2 0/3] phy: core: Re-work runtime PM deployment and fix an issue

Changes in v2:
	- Address scenario, pointed out by Kishon, that runtime PM may be
	enabled by the phy provider driver, *after* it have called
	devm_phy_create() or phy_create().

The intend of this series is to simplify the runtime PM deployment in the phy
core, but while doing that fixing a related problem for a Renesas SoC making use
of a phy. This issue was raised by Geert Uytterhoeven and Yoshihiro Shimoda, due
to a changed behaviour in the runtime PM core.

The commit in question is f8817f61e821 (PM / runtime: Drop children check from
__pm_runtime_set_status()). However, it turned out that the problem existed
already prior this change, only that the error was printed instead of giving a
WARN splat.

More details about the changes are available in each change log. For additional
background, please have look at the link below.

https://patchwork.kernel.org/patch/10086651/

Ulf Hansson (3):
  phy: core: Move runtime PM reference counting to the parent device
  phy: core: Drop unused runtime PM APIs
  phy: core: Update the runtime PM section in the docs to reflect
    changes

 Documentation/phy.txt   | 29 ++++++++++++----------
 drivers/phy/phy-core.c  | 65 +++++++------------------------------------------
 include/linux/phy/phy.h | 46 +---------------------------------
 3 files changed, 26 insertions(+), 114 deletions(-)

-- 
2.7.4