linux-kernel - Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering w/ device tree

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Message-ID: <20160504071801.GA17045@amd>
Date:	Wed, 4 May 2016 09:18:01 +0200
From:	Pavel Machek <pavel@....cz>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Douglas Anderson <dianders@...omium.org>, ulf.hansson@...aro.org,
	jh80.chung@...sung.com, shawn.lin@...k-chips.com,
	adrian.hunter@...el.com, stefan@...er.ch,
	linux-mmc@...r.kernel.org, computersforpeace@...il.com,
	dmitry.torokhov@...il.com, Heiko Stuebner <heiko@...ech.de>,
	jszhang@...vell.com, linux-rockchip@...ts.infradead.org,
	devicetree-spec@...r.kernel.org, mark.rutland@....com,
	linux-kernel@...r.kernel.org, vbyravarasu@...dia.com,
	lars@...afoo.de, jonathanh@...dia.com,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	pawel.moll@....com, ijc+devicetree@...lion.org.uk,
	grundler@...omium.org, galak@...eaurora.org, lporzio@...ron.com,
	robh+dt@...nel.org, chaotian.jing@...iatek.com,
	sergei.shtylyov@...entembedded.com, sudeep.holla@....com,
	zhonghui.fu@...ux.intel.com, kirill.shutemov@...ux.intel.com
Subject: Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk
 numbering w/ device tree

On Fri 2016-04-29 19:12:48, Russell King - ARM Linux wrote:
> On Fri, Apr 29, 2016 at 10:32:15AM -0700, Douglas Anderson wrote:
> > This series picks patches from various different places to produce what
> > I consider the best solution to getting consistent mmc and mmcblk
> > ordering.
> > 
> > Why consistent ordering and why not just use UUIDs?  IMHO consistent
> > ordering solves a few different problems:
> 
> NAK.  Really.  Use UUIDs, that's the proper solution here.

Except that UUIDs do not solve the problem.

You have just booted of nfsroot, and you want to format u-SD card in
the external slot. How do you do that?
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html