linux-kernel - [PATCH v1 0/2] Fix Tegra PMC driver racing with cpuidle driver

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Message-Id: <20210718212706.21659-1-digetx@gmail.com>
Date:   Mon, 19 Jul 2021 00:27:04 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:     linux-pm@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v1 0/2] Fix Tegra PMC driver racing with cpuidle driver

I stumbled upon a problem where tegra-cpuidle driver is probed before
Power Management controller driver in a specific kernel configuration,
implicitly disabling the deepest CPU idling state. This series fixes
that trouble.

Dmitry Osipenko (2):
  soc/tegra: pmc: Prevent racing with cpuilde driver
  cpuidle: tegra: Check whether PMC is ready

 arch/arm/mach-tegra/pm.c        |  2 +-
 arch/arm/mach-tegra/pm.h        |  6 ------
 arch/arm/mach-tegra/tegra.c     |  2 --
 drivers/cpuidle/cpuidle-tegra.c |  3 +++
 drivers/soc/tegra/pmc.c         | 14 +++++++++++++-
 include/soc/tegra/pm.h          |  6 ++++++
 6 files changed, 23 insertions(+), 10 deletions(-)

-- 
2.32.0