linux-kernel - Re: [patch 1/3] Input: psmouse - create PS/2 protocol options for Kconfig

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Message-ID: <45F13EBE.5040804@debian.org>
Date:	Fri, 09 Mar 2007 06:02:22 -0500
From:	Andres Salomon <dilinger@...ian.org>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [patch 1/3] Input: psmouse - create PS/2 protocol options for
 Kconfig

Dmitry Torokhov wrote:
> On 2/16/07, Andres Salomon <dilinger@...ian.org> wrote:
>> Dmitry Torokhov wrote:
>> > On Thursday 15 February 2007 20:30, Andrew Morton wrote:
>> >> On Thu, 15 Feb 2007 19:55:29 -0500
>> >> Andres Salomon <dilinger@...ian.org> wrote:
>> [...]
>> >> Perhaps a nicer implementation would be to have a separate .c file
>> for each
>> >> variant.
>> >>
>> >
>> > Having completely separate sub-drivers is very hard because of very
>> delicate
>> > PS/2 protocol probing....
>> >
>> > What do you think about patch below? It somewhat reduces #ifdef
>> clutter in main
>> > module moving it in .h files...
>> >
>>
>> Normally, I'm a fan of that sort of thing.  However, in this case, I
>> think it makes sense to have the #ifdefs right in the probe function; at
>> least for me, it makes it easier to understand what's going on.  The
>> synaptics stuff is especially tricky; with a cursory glance over the
>> code, one might assume that all the synaptics functions disappear when
>> CONFIG_MOUSE_PS2_SYNAPTICS is unset.  However, if the #ifdef's are in
>> the probe function, it's pretty clear that some synaptics functions
>> still get called even when CONFIG_MOUSE_PS2_SYNAPTICS is unset.
>>
> 
> Thit is a valid point but #ifdef maze in the middle of already messy
> psmouse-extensions() is too much for me. I guess I will just add a
> comment explaining that synaptics probing is really special.
> 

I haven't seen patches in your tree; are you waiting for me to do the
cleanups and resend?


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