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Message-ID: <CAK7LNAS_vietwRRFnH3YhbWSzjRFP4U6rjftYek1KQ3ips2ZSQ@mail.gmail.com>
Date:	Sat, 13 Feb 2016 01:30:46 +0900
From:	Masahiro Yamada <yamada.masahiro@...ionext.com>
To:	Peter Hurley <peter@...leysoftware.com>
Cc:	linux-serial@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
	devicetree@...r.kernel.org, Rob Herring <robh@...nel.org>,
	Greg KH <gregkh@...uxfoundation.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-arch@...r.kernel.org, Jiri Slaby <jslaby@...e.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Frank Rowand <frowand.list@...il.com>
Subject: Re: [PATCH v2] serial: earlycon: rework common framework for earlycon declarations

Hi Peter,


2016-02-13 0:17 GMT+09:00 Peter Hurley <peter@...leysoftware.com>:
> On 02/12/2016 02:36 AM, Masahiro Yamada wrote:
>> Commit 71f50c6d9a22 ("of: drop symbols declared by _OF_DECLARE() from
>> modules") fixed the link error introduced by commit b8d20e06eaad
>> ("serial: 8250_uniphier: add earlycon support").
>>
>> After commit 2eaa790989e0 ("earlycon: Use common framework for
>> earlycon declarations") was applied, the link error came back
>> because the commit reworked OF_EARLYCON_DECLARE() to not use
>> _OF_DECLARE().
>
> What link error are you getting?

The combination of CONFIG_SERIAL_8250_CONSOLE=y
and CONFIG_SERIAL_8250_UNIPHIER=m causes a link error.



>
>> This commit reworks OF_EARLYCON_DECLARE() again based on
>> _OF_DECLARE().  My motivations are:
>>
>>  - Fix the link error in a generic way (without patching
>>    drivers/tty/serial/8250/8250_uniphier.c)
>>
>>  - Delete struct earlycon_id.  This struct is re-inventing the wheel;
>>    the fields "name", "compatible", "setup" can be implemented in
>>    struct of_device_id as other frameworks do.
>
> This patch basically reverts the common framework.
> What happens when not building with OF? Does it still declare the
> earlycon table?

Ah, I missed this.  (sigh)

Earlycon must still work without OF.
My way only works with OF.

I really screwed up.  Sorry.

Just disregard this patch.





-- 
Best Regards
Masahiro Yamada

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