linux-kernel - Re: [PATCH v5][resend v4] of: replace Asahi Kasei Corp vendor prefix

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Date:	Fri, 9 Jan 2015 10:07:18 +0000
From:	Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To:	Stephen Warren <swarren@...dotorg.org>
CC:	Olof Johansson <olof@...om.net>, Arnd Bergmann <arnd@...db.de>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	Rob Herring <robh@...nel.org>,
	"Matthias Brugger" <matthias.bgg@...il.com>,
	<linux-tegra@...r.kernel.org>, <linux-sh@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	"Magnus Damm" <magnus.damm@...il.com>,
	Simon Horman <horms+renesas@...ge.net.au>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Mark Brown <broonie@...nel.org>,
	ALSA Development Mailing List <alsa-devel@...a-project.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Simon Horman <horms@...ge.net.au>,
	"Geert Uytterhoeven" <geert@...ux-m68k.org>
Subject: Re: [PATCH v5][resend v4] of: replace Asahi Kasei Corp vendor prefix


Hi Stephen

Thank you for your feedback

> > I'm sending this "of: replace Asahi Kasei Corp vendor prefix" during
> > half-year (since Jun 2014) , many times. But, no-one care it.
> > I don't know who is the best maintainer.
> >  - Stephen : because it has Tegra ?
> >  - Olof    : because it has Tegra (= ARM) ?
> >  - Arnd    : because it has Tegra (= ARM) ?
> >  - Matthias: because it has Tegra (= ARM SoC) ?
> >  - Rob     : because DT ?
> >  - Andrew  : Last chance ?
> > 
> > But, could you please care this patch ?
> > I will re-send it again
> 
> It doesn't seem to be ack'd by any of the DT maintainers. Retro-actively
> changing a DT vendor name would need that, I think.

Rob ?
I had sent this patch to him since half-years ago, many times...
Or other maintainer ?

> Thierry and Alex (both Tegra maintainers) appear to have ack'd it, so it
> seems they expect it to go through some tree other than Tegra. Weren't
> there a bunch of related patches along with this (e.g. updating relevant
> drivers to support both prefixes?) so it was expected this patch would
> be applied together with them?

I guess they expected it goes to DT branch (?)
This is only 1 patch. it doesn't have related patch-set

> >> From: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
> >>
> >> Current vendor-prefixes.txt already has "ak" prefix for Asahi Kasei Corp
> >> by ae8c4209af2c(of: Add vendor prefix for Asahi Kasei Corp.)
> >>
> >> It went through the appropriate review process. But, almost all
> >> Asahi Kasei chip drivers are using "asahi-kasei" prefix today.
> >> (arch/arm/boot/dts/tegra20-seaboard.dts only is using "ak,ak8975",
> >>  but there are instances of "asahi-kasei,ak8975" in other dts files.
> >>  And drivers/iio/magnetometer/ak8975.c doesn't support "ak,ak8975" prefix)
> >> So, we made a mistake there.
> >>
> >> In addition, checkpatch.pl reports WARNING if it is using "asahi-kasei"
> >> prerfix in DT file.
> >> (DT compatible string vendor "asahi-kasei" appears un-documented)
> >>
> >> Marking it deprecated and warning with checkpatch is certainly
> >> preferable. So, this patch replace "ak" to "asahi-kasei" in
> >> vendor-prefixes.txt. (and fixup tegra20-seaboard)
> >>
> >> OTOH, Asahi Kasei is usually referred to as "AKM", but this patch
> >> doesn't care about it. Because no DT is using that today.
> >>
> >> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
> >> Acked-by: Thierry Reding <treding@...dia.com>
> >> Acked-by: Alexandre Courbot <acourbot@...dia.com>
> 
> >> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
> 
> >> -ak	Asahi Kasei Corp.
> 
> >> +asahi-kasei	Asahi Kasei Corp.
> 
> >> diff --git a/arch/arm/boot/dts/tegra20-seaboard.dts b/arch/arm/boot/dts/tegra20-seaboard.dts
> 
> >>  		magnetometer@c {
> >> -			compatible = "ak,ak8975";
> >> +			compatible = "asahi-kasei,ak8975";
> 


Best regards
---
Kuninori Morimoto
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