linux-kernel - Re: [PATCH v3 01/12] PM / devfreq: Init user limits from OPP limits, not viceversa

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Date:   Fri, 15 Jun 2018 14:25:42 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Brian Norris <briannorris@...omium.org>
Cc:     MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Douglas Anderson <dianders@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Lee Jones <lee.jones@...aro.org>
Subject: Re: [PATCH v3 01/12] PM / devfreq: Init user limits from OPP limits,
 not viceversa

On Fri, Jun 15, 2018 at 02:06:21PM -0700, Brian Norris wrote:
> Hi,
> 
> On Thu, Jun 14, 2018 at 12:47:01PM -0700, Matthias Kaehlcke wrote:
> > Commit ab8f58ad72c4 ("PM / devfreq: Set min/max_freq when adding
> > the devfreq device") introduced the initialization of the user
> > limits min/max_freq from the lowest/highest available OPPs. Later
> > commit f1d981eaecf8 ("PM / devfreq: Use the available min/max
> > frequency") added scaling_min/max_freq, which actually represent
> > the frequencies of the lowest/highest available OPP. scaling_min/
> > max_freq are initialized with the values from min/max_freq, which
> > is totally correct in the context, but a bit awkward to read.
> > 
> > Swap the initialization and assign scaling_min/max_freq with the
> > OPP freqs and then the user limts min/max_freq with scaling_min/
> > max_freq.
> > 
> > Needless to say that this change is a NOP, intended to improve
> > readability.
> > ---
> 
> BTW, putting the '---' here means that stuff below it usually gets
> dropped when applied (e.g., with git-am). So it'll drop your
> Signed-off-by and Reviewed-by. Not a huge problem if the maintainers
> look out for that.

It wasn't intended and is related with my current workflow: To keep
easily track of deltas in my tree and have the changelog ready when
sending the patches I currently keep the changelog in the commit
message and manually move it below '---' when doing 'git send-email'.

Seems I got it wrong in this case :(

> > Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
> > Reviewed-by: Chanwoo Choi <cw00.choi@...sung.com>
> 
> Reviewed-by: Brian Norris <briannorris@...omium.org>

Thanks!