linux-kernel - [PATCH 0/2] regualtors: Fix suspend/resume issues since v4.16

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Message-id: <20180903144937.16507-1-m.szyprowski@samsung.com>
Date:   Mon, 03 Sep 2018 16:49:35 +0200
From:   Marek Szyprowski <m.szyprowski@...sung.com>
To:     linux-kernel@...r.kernel.org, Mark Brown <broonie@...nel.org>,
        Chunyan Zhang <zhang.chunyan@...aro.org>
Cc:     Marek Szyprowski <m.szyprowski@...sung.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        linux-samsung-soc@...r.kernel.org
Subject: [PATCH 0/2] regualtors: Fix suspend/resume issues since v4.16

Hi All,

While working on suspend/resume support for Samsung Exynos5433-based TM2
board (arch/arm64/boot/dts/exynos/exynos5433-tm2.dts), I've noticed that
v4.16 kernel release introduced some serious problems with regulator
configuration in system suspend state. Further investigation revealed
that the following 2 commits are responsible for my issues:

1. f7efad10b5c4: regulator: add PM suspend and resume hooks
2. 72069f9957a1: regulator: leave one item to record whether regulator is enabled

I've been really surprised that no-one noticed those issues for almost
4 kernel releases. Please review my fixes and apply to v4.19-rcX if
possible.

Best regards
Marek Szyprowski, PhD
Samsung R&D Institute Poland

Patch summary:

Marek Szyprowski (2):
  regulator: Fix useless O^2 complexity in suspend/resume
  regulator: Fix 'do-nothing' value for regulators without suspend state

 drivers/regulator/core.c          | 41 +++++++++----------------------
 drivers/regulator/of_regulator.c  |  2 --
 include/linux/regulator/machine.h |  6 ++---
 3 files changed, 15 insertions(+), 34 deletions(-)

-- 
2.17.1