linux-kernel - Re: [PATCH v2 1/2] mmc: dw_mmc: Handle late vmmc regulators with EPROBE

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Message-ID: <CAD=FV=X8qVAeD_F-kQLHcgusY65pw4WCs5mMsO0wTapqBUAiQw@mail.gmail.com>
Date:	Thu, 27 Jun 2013 10:10:26 -0700
From:	Doug Anderson <dianders@...omium.org>
To:	Chris Ball <cjb@...top.org>
Cc:	Olof Johansson <olof@...om.net>,
	Andrew Bresticker <abrestic@...omium.org>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Abhilash Kesavan <a.kesavan@...sung.com>,
	Tomasz Figa <tomasz.figa@...il.com>,
	Jaehoon Chung <jh80.chung@...sung.com>,
	Seungwon Jeon <tgih.jun@...sung.com>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Rob Landley <rob@...dley.net>,
	Will Newton <will.newton@...il.com>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>, linux-doc@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] mmc: dw_mmc: Handle late vmmc regulators with EPROBE_DEFER

Chris,

On Thu, Jun 27, 2013 at 9:44 AM, Chris Ball <cjb@...top.org> wrote:
> This hunk breaks the build for me, because err_setup_bus and ret are
> used in the error path of the call to mmc_add_host() in this function.
>
> I'll push a version that leaves those in.  Let me know if you think
> something strange is happening that made this work okay for you, like
> a mismerge.

WTF.  OK, this is clearly my fault.  I went back to the exact patch
and it didn't compile for me, either.  :(  My typical workflow is to
develop something in our local tree and then cherry-pick (and test!)
on ToT linux.  Probably what happened in this case was that there was
a compile error and I didn't notice and somehow ended up testing my
local tree (which doesn't error-check mmc_add_host).

Sorry for the hassle.  Leaving the err_setup_bus in is correct (and
leaving the "ret" variable declared).

I did those fixups and it now compiles and things boot.  I haven't
tested the deferral case in ToT yet, though.  I'll try that now and
post if something weird comes up.

-Doug
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