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Subject: Re: [PATCH v1 17/30] mmc: sdhci-tegra: Support OPP and core voltage
 scaling
To:     Viresh Kumar <viresh.kumar@linaro.org>
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From:   Dmitry Osipenko <digetx@gmail.com>
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Date:   Fri, 6 Nov 2020 16:17:13 +0300
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06.11.2020 09:15, Viresh Kumar пишет:
> Setting regulators for count as 0 doesn't sound good to me.
> 
> But, I understand that you don't want to have that if (have_regulator)
> check, and it is a fair request. What I will instead do is, allow all
> dev_pm_opp_put*() API to start accepting a NULL pointer for the OPP
> table and fail silently. And so you won't be required to have this
> unwanted check. But you will be required to save the pointer returned
> back by dev_pm_opp_set_regulators(), which is the right thing to do
> anyways.

Perhaps even a better variant could be to add a devm versions of the OPP
API functions, then drivers won't need to care about storing the
opp_table pointer if it's unused by drivers.