linux-kernel - Re: [PATCH 4/4] drivers/bus: make arm-ccn.c driver explicitly non-modular

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Message-ID: <20160329114525.GC6745@arm.com>
Date:	Tue, 29 Mar 2016 12:45:25 +0100
From:	Will Deacon <will.deacon@....com>
To:	Paul Gortmaker <paul.gortmaker@...driver.com>
Cc:	linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
	Pawel Moll <pawel.moll@....com>,
	Olof Johansson <olof@...om.net>,
	linux-arm-kernel@...ts.infradead.org, suzuki.poulose@....com
Subject: Re: [PATCH 4/4] drivers/bus: make arm-ccn.c driver explicitly
 non-modular

On Sun, Mar 27, 2016 at 05:10:58PM -0400, Paul Gortmaker wrote:
> The Kconfig for this driver is currently:
> 
> config ARM_CCN
>         bool "ARM CCN driver support"
> 
> ...meaning that it currently is not being built as a module by anyone.
> Lets remove the modular code that is essentially orphaned, so that
> when reading the driver there is no doubt it is builtin-only.
> 
> We explicitly disallow a driver unbind, since that doesn't have a
> sensible use case anyway, and it allows us to drop the ".remove"
> code for non-modular drivers.
> 
> Since module_init translates to device_initcall in the non-modular
> case, the init ordering remains unchanged with this commit.
> 
> We exchange module.h for moduleparam.h here since the driver uses
> module_param_named, and for now the easiest way to remain compatible
> with existing bootargs use cases is to leave this as-is.
> 
> We also delete the MODULE_LICENSE tag etc. since all that information
> was (or is now) contained at the top of the file in the comments.

I'd much rather fix the driver to build as a module, if at all possible.
Suzuki (CC'd) is taking a look at that, so please drop this patch for
now.

Will