linux-kernel - Re: [PATCH 0/3] leds: avoid module usage in non-modular code

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Date:	Mon, 14 Dec 2015 10:21:39 +0100
From:	Jacek Anaszewski <j.anaszewski@...sung.com>
To:	Paul Gortmaker <paul.gortmaker@...driver.com>
Cc:	linux-kernel@...r.kernel.org, Bryan Wu <cooloney@...il.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Richard Purdie <rpurdie@...ys.net>, linux-leds@...r.kernel.org
Subject: Re: [PATCH 0/3] leds: avoid module usage in non-modular code

On 12/13/2015 10:45 PM, Paul Gortmaker wrote:
> This series of commits is a part of a larger project to ensure
> people don't reference modular support functions in non-modular
> code.  Overall there was roughly 5k lines of dead code in the
> kernel due to this.  So far we've fixed several areas, like tty,
> x86, net, ... and we continue to work on other areas.
>
> There are several reasons to not use module support for code that
> can never be built as a module, but the big ones are:
>
>   (1) it is easy to accidentally code up unused module_exit and remove code
>   (2) it can be misleading when reading the source, thinking it can be
>        modular when the Makefile and/or Kconfig prohibit it
>   (3) it requires the include of the module.h header file which in turn
>       includes nearly everything else.
>
> For the LED subsystem, there are just three commits.  Two are basically
> trivial remapping to the appropriate non-modular counterparts.  The
> third also has a change to block driver unbinding since that doesn't
> make any sense and it allows us to delete the .remove code.  We've
> already made similar unbind changes like this in drivers/tty.
>
> Patches created on linux-next and build tested for ARM allmodconfig.
>
> Paul.
> ---
>
> Cc: Bryan Wu <cooloney@...il.com>
> Cc: Linus Walleij <linus.walleij@...aro.org>
> Cc: Jacek Anaszewski <j.anaszewski@...sung.com>
> Cc: Richard Purdie <rpurdie@...ys.net>
> Cc: linux-leds@...r.kernel.org
>
> Paul Gortmaker (3):
>    drivers/leds: make trigger/ledtrig-cpu.c driver explicitly non-modular
>    drivers/leds: make trigger/ledtrig-ide-disk.c driver explicitly non-modular
>    drivers/leds: make leds-syscon.c explicitly non-modular
>
>   drivers/leds/leds-syscon.c              | 18 +++---------------
>   drivers/leds/trigger/ledtrig-cpu.c      | 26 +-------------------------
>   drivers/leds/trigger/ledtrig-ide-disk.c | 14 +-------------
>   3 files changed, 5 insertions(+), 53 deletions(-)
>

Patch set applied, thanks.

-- 
Best Regards,
Jacek Anaszewski
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