From: "Enrico Weigelt, metux IT consult" <lkml@metux.net>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Javier Martinez Canillas <javierm@redhat.com>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Wolfram Sang <wsa@the-dreams.de>,
Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Michal Marek <michal.lkml@markovi.net>,
linux-kbuild <linux-kbuild@vger.kernel.org>,
open list <linux-kernel@vger.kernel.org>,
Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
Lee Jones <lee.jones@linaro.org>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Mark Brown <broonie@kernel.org>
Subject: Re: [PATCH RFC] modpost: Support I2C Aliases from OF tables
Date: Thu, 8 Aug 2019 16:00:16 +0200 [thread overview]
Message-ID: <9f03f364-77b1-3ee5-cd93-0908bf863380@metux.net> (raw)
In-Reply-To: <20190808132417.GU30120@smile.fi.intel.com>
On 08.08.19 15:24, Andy Shevchenko wrote:
> On Thu, Aug 08, 2019 at 03:12:47PM +0200, Enrico Weigelt, metux IT consult wrote:
>> On 06.08.19 19:12, Javier Martinez Canillas wrote:
>>
>>> Right, we could add a macro for that. Although it should probably be called
>>> I2C_OF_MODULE_DEVICE_TABLE() or something like that since is specific to OF.
>>
>> At that point it should be completely noop when OF is disabled, so we
>> also can get rid of many ifdef's.
>
> Why?
For cases where drivers work w/ or w/o oftree. Not sure whether it
applies to i2c specifically, but there're other places where we still
need nasty ifdef's (eg. gpio-keyboard).
>> I've got some patch somewhere for introducing a MODULE_OF_TABLE() macro
>> as replacement for many MODULE_DEVICE_TABLE(of, ...) cases, which noops
>> when CONFIG_OF is disabled. (and similar ones for other table types).
>
> It's simple wrong to have #ifdef CONFIG_OF without counterpart of_match_ptr().
Of course, but that's just a part of the story. (actually I'd prefer
using it everywhere, even if the driver only supports oftree).
> And taking into consideration that ID table itself doesn't depend to OF at all,
> why not simple drop that #ifdef and of_match_ptr() all together?
Consumes less space. Yes, it isn't much, but in some scenarios one needs
to heavily reduce the kernel size. And I wouldn't like to use
of_match_ptr() inside a MODULE_DEVICE_TABLE() call :o
--mtx
--
Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@metux.net -- +49-151-27565287
prev parent reply other threads:[~2019-08-08 14:00 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-10 19:39 [PATCH RFC] modpost: Support I2C Aliases from OF tables Kieran Bingham
2019-07-22 13:03 ` Javier Martinez Canillas
2019-07-31 19:44 ` Wolfram Sang
2019-08-01 2:17 ` Masahiro Yamada
2019-08-05 22:48 ` Javier Martinez Canillas
2019-08-06 7:30 ` Geert Uytterhoeven
2019-08-06 17:39 ` Javier Martinez Canillas
2019-08-05 22:25 ` Javier Martinez Canillas
2019-08-06 7:22 ` Geert Uytterhoeven
2019-08-06 17:12 ` Javier Martinez Canillas
2019-08-08 13:12 ` Enrico Weigelt, metux IT consult
2019-08-08 13:24 ` Andy Shevchenko
2019-08-08 14:00 ` Enrico Weigelt, metux IT consult [this message]
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