linux-kernel - Re: [PATCH 0/2] cpufreq/opp: rework regulator initialization

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Message-ID: <20190208102835.fjxyeyp3kkdwar5d@vireshk-i7>
Date:   Fri, 8 Feb 2019 15:58:35 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     Marek Szyprowski <m.szyprowski@...sung.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Linux Samsung SoC <linux-samsung-soc@...r.kernel.org>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Nishanth Menon <nm@...com>, Stephen Boyd <sboyd@...nel.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Dave Gerlach <d-gerlach@...com>,
        Wolfram Sang <wsa@...-dreams.de>
Subject: Re: [PATCH 0/2] cpufreq/opp: rework regulator initialization

On 08-02-19, 11:18, Rafael J. Wysocki wrote:
> Obviously, all I2C transfers need to take place either before
> suspending the I2C controller or after resuming it.

Right. But all I am saying is that it is the responsibility of the
cpufreq core/driver to make sure we call ->init() only when the
resources are available to be used. For example during driver load, we
defer probe if resources aren't available and that makes sure ->init()
gets called when we can actually change the frequency.

Shouldn't the same be true during resume? That is make sure all
resources are in place before ->init() gets called ?

-- 
viresh