linux-kernel - Re: [PATCH v9 00/17] Consolidate and improve NVIDIA Tegra CPUIDLE driver(s)

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Message-ID: <6fc959d6-8602-5ab0-d624-b410827005cf@gmail.com>
Date:   Mon, 24 Feb 2020 19:44:19 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Michał Mirosław <mirq-linux@...e.qmqm.pl>,
        Jasper Korten <jja2000@...il.com>,
        David Heidelberg <david@...t.cz>,
        Peter Geis <pgwipeout@...il.com>
Cc:     linux-pm@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v9 00/17] Consolidate and improve NVIDIA Tegra CPUIDLE
 driver(s)

13.02.2020 02:51, Dmitry Osipenko пишет:
> Hello,
> 
> This series does the following:
> 
>   1. Unifies Tegra20/30/114 drivers into a single driver and moves it out
>      into common drivers/cpuidle/ directory.
> 
>   2. Enables CPU cluster power-down idling state on Tegra30.
> 
> In the end there is a quite nice clean up of the Tegra CPUIDLE drivers
> and of the Tegra's arch code in general. Please apply, thanks!
> 
> !!!WARNING!!! This series was made on top of the cpufreq patches [1]. But it
>               should be fine as long as Thierry Reding would pick up this and
>               the cpufreq patchsets via the Tegra tree, otherwise there will
>               one minor merge-conflict.
> 
> [1] https://patchwork.ozlabs.org/project/linux-tegra/list/?series=158206
> 
> Changelog:
> 
> v9: - Added acks from Peter De Schrijver.
> 
>     - Added tested-by from Peter Geis, Jasper Korten and David Heidelberg
>       who tested these patches on Ouya, TF300T and Nexus 7 devices.
> 
>     - Temporarily dropped the "cpuidle: tegra: Support CPU cluster power-down
>       state on Tegra30" patch because Michał Mirosław reported that it didn't
>       work well on his TF300T. After some testing we found that changing
>       a way in which firmware performs L2 cache maintenance helps, but later
>       on we also found that the current v9 series works just fine without the
>       extra firmware changes using recent linux-next and the reason why v8
>       didn't work before is still unknown (need more testing). So I decided
>       that it will be better to postpone the dropped patch until we know for
>       sure that it works well for everyone in every possible configuration.
> 
>     - Rebased this series on top of recent linux-next, in a result dropped
>       the "cpuidle: Avoid NULL dereference in cpuidle_driver_state_disabled()"
>       patch because it's not needed anymore.

I just noticed that this patchset was versioned wrongly, it should've
been v10. Sorry for the confusion, next version will be v11.