linux-kernel - Re: [PATCH V2 1/6] PM / QOS: Add default case to the switch

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Message-ID: <20170210121535.GA27377@amd>
Date:   Fri, 10 Feb 2017 13:15:35 +0100
From:   Pavel Machek <pavel@....cz>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Rafael Wysocki <rjw@...ysocki.net>, khilman@...libre.com,
        ulf.hansson@...aro.org, Len Brown <len.brown@...el.com>,
        linaro-kernel@...ts.linaro.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        sboyd@...eaurora.org, nm@...com, robh+dt@...nel.org,
        lina.iyer@...aro.org, rnayak@...eaurora.org
Subject: Re: [PATCH V2 1/6] PM / QOS: Add default case to the switch

On Fri 2017-02-10 11:30:30, Viresh Kumar wrote:
> On 09-02-17, 15:24, Pavel Machek wrote:
> > On Thu 2017-02-09 09:11:47, Viresh Kumar wrote:
> > > The switch block handles all the QOS request types present today, but
> > > starts giving compilation warnings as soon as a new type is added and
> > > not handled in this.
> > > 
> > > To prevent against that, add the default case as well and do a WARN from
> > > it.
> > 
> > I'd say compilation-time warning is better than hmm.... stacktrace and memory leak
> > at runtime?
> 
> Of course we aren't going to allow a compilation warning for each and every
> platform that compiles this file. How do you wish to fix the issue then ?

What is tue issue?

As soon as new QoS request type is added, this switch can be
fixed. There is no issue now, and there should be no issue in future.

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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