linux-kernel - Re: [i2c] [RFC][PATCH 4/4] RTC: SMBus support for the M41T80,

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Message-ID: <20080510085340.29c26aef@hyperion.delvare>
Date:	Sat, 10 May 2008 08:53:40 +0200
From:	Jean Delvare <khali@...ux-fr.org>
To:	"Maciej W. Rozycki" <macro@...ux-mips.org>
Cc:	David Brownell <david-b@...bell.net>, linux-mips@...ux-mips.org,
	mgreer@...sta.com, rtc-linux@...glegroups.com,
	Atsushi Nemoto <anemo@....ocn.ne.jp>,
	linux-kernel@...r.kernel.org, i2c@...sensors.org, ab@...able.de,
	Alessandro Zummo <alessandro.zummo@...ertech.it>
Subject: Re: [i2c] [RFC][PATCH 4/4] RTC: SMBus support for the M41T80,

On Sat, 10 May 2008 03:21:35 +0100 (BST), Maciej W. Rozycki wrote:
> > This was an option when the functions where introduced 9 years ago.
> > But now that it was done, renaming them would cause even more
> > confusion, I think. I would be fine with adding comments in i2c-core.c
> > or improving Documentation/i2c/smbus-protocol to make it more obious,
> > though.
> > 
> > On a related note, you will notice that the other i2c_smbus_* functions
> > do not follow the naming of SMBus transactions. Again that's something
> > I regret but I feel that changing the names now would cause a lot of
> > confusion amongst developers, so I'm not doing it.
> 
>  It may not be worth the effort, but if done in bulk for all the users in
> the tree, there should be no problem with that.  I am fairly sure there
> were changes of this kind from time to time, with occasional screams heard
> in response from some dark corners, but no big pain.  We obviously
> explicitly disregard out-of-tree users and for occasional contributors
> asking: "Where the * has this function gone?" there is the Documentation/
> tree to provide a greppable reference, so generally not a big deal.

It's not that easy. There are some drivers which are both in-tree and
out-of-tree, for which such a change means adding ifdefs. And there is
i2c-dev.h (the user-space one) which has similar functions, if we
rename only the kernel variants, there will be some confusion. But if
we rename also the user-space variants, then it's up to 2.4 kernel
users to have different names for kernel-space and user-space functions.

All in all I'd say it is not worth the effort. There are many other
tasks where our time will be better used.

> > Just one patch should be enough, if I agree with all the changes. You
> > might make a separate patch with the things I may not agree with, so
> > that you don't have to cherry-revert them if I indeed don't agree, and
> > we just merge them if I do agree.
> 
>  Hmm, technically you do not seem to be responsible to accept changes
> under drivers/rtc/, so I will split them anyway for others to decide.

Huu, sorry, for some reason I thought that we were still speaking about
i2c-sibyte. Of course I don't have my say about what happens in
drivers/rtc.

-- 
Jean Delvare
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