linux-kernel - Re: [PATCH 11/20] pinctrl: Downgrade pinctrl

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Date:	Thu, 23 Feb 2012 11:48:06 +0800
From:	Dong Aisheng <aisheng.dong@...escale.com>
To:	Stephen Warren <swarren@...dia.com>
CC:	Linus Walleij <linus.walleij@...aro.org>,
	Linus Walleij <linus.walleij@...ricsson.com>,
	"B29396@...escale.com" <B29396@...escale.com>,
	"s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
	"dongas86@...il.com" <dongas86@...il.com>,
	"shawn.guo@...aro.org" <shawn.guo@...aro.org>,
	"thomas.abraham@...aro.org" <thomas.abraham@...aro.org>,
	"tony@...mide.com" <tony@...mide.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: Re: [PATCH 11/20] pinctrl: Downgrade pinctrl_get warning when no
 maps are found

On Wed, Feb 22, 2012 at 09:21:25AM -0800, Stephen Warren wrote:
...
> > I'm afraid this is a little error-prone, that means even we specifed
> > the wrong map name or state name, the pinctrl_get still does not get
> > failed and it is a little different as what we want in this patch.
> 
> Yes, this does open up a small opportunity for an undetected error at
> this stage in the patch series.
> 
> However, this is closed later by the final patch that enhances the mapping
> table to represent pin config data, and "dummy" states.
> 
> I wrote/posted this patch to highlight that this code should be checking
> for non-existent states, rather than states which match no mapping table
> entries. Admittedly, there's no way to represent the difference at this
> point in the patch series. Once the final patch is applied, there's an
> explicit way to represent a state that exists, but has no mapping table
> entries, so the opportunity for error then no longer exists.
>
Ok, it's good.
Will see your final patch for this issue.

Regards
Dong Aisheng

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