linux-kernel - Re: cpufreq: mediatek: allow modular build

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Message-ID: <3071823.f1VzTWVMmV@wuerfel>
Date:	Fri, 11 Sep 2015 10:36:19 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Viresh Kumar <viresh.kumar@...aro.org>
Cc:	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Pi-Cheng Chen <pi-cheng.chen@...aro.org>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: cpufreq: mediatek: allow modular build

On Friday 11 September 2015 13:55:36 Viresh Kumar wrote:
> On 11-09-15, 10:22, Arnd Bergmann wrote:
> > In my approach, I decided to allow the driver to be a module, as that
> > seems nicer for multi_v7_defconfig, but I now see that there are
> > several other drivers that can only be built-in, so if we decided to
> > make that the general strategy we should change them all.
> 
> And we need to do that with a proper module_exit() function, otherwise
> we are really adding a BUG. Which you just did with your patch 

I don't consider that a bug: a module with just an init function and
no exit function can be loaded once and never unloaded, which is not
nice for debugging, but is otherwise fully functional.

	Arnd
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