linux-kernel - Re: [PATCH v2 3/7] net: rfkill: gpio: remove gpio conversion support

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Date:	Mon, 25 Nov 2013 18:05:31 +0900
From:	Alex Courbot <acourbot@...dia.com>
To:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>
CC:	Alexandre Courbot <gnurou@...il.com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Linus Walleij <linus.walleij@...aro.org>,
	Chris Ball <cjb@...top.org>,
	Johannes Berg <johannes@...solutions.net>,
	Rhyland Klein <rklein@...dia.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Mathias Nyman <mathias.nyman@...ux.intel.com>,
	Rob Landley <rob@...dley.net>,
	Stephen Warren <swarren@...dotorg.org>,
	Thierry Reding <thierry.reding@...il.com>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/7] net: rfkill: gpio: remove gpio conversion support

On 11/25/2013 06:02 PM, Heikki Krogerus wrote:
> On Mon, Nov 25, 2013 at 05:47:38PM +0900, Alex Courbot wrote:
>> On 11/25/2013 05:41 PM, Heikki Krogerus wrote:
>>> Adding the lookup table in first patch and then changing the driver in
>>> the second creates a point to the history where this driver stops
>>> working on this platform, which is something I'm not willing to do.
>>
>> Does it? If you just add a lookup table and keep using the
>> integer-based GPIO interface, then your lookup table will not be
>> used by anyone and will basically be a no-op. Then you can switch to
>> the GPIO descriptor interface and take advantage of the lookup
>> table. Unless I missed something there should not be any point that
>> breaks in the git history.
>>
>> (to be clear: the first patch should *only* contain the lookup
>> table, and the second be a merge of the current patches 1 and 3 of
>> this series.)
>
> OK, I agree. If I don't remove the old gpio numbers in in the first
> patch, there is no problem. We can do this with the two patches.

Yep, that's what I meant. :) It would make the series considerably 
easier to understand by removing its temporary code.

Thanks,
Alex.

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