linux-kernel - Re: [PATCH v2] pinctrl: implement pinctrl deferred probing

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Message-ID: <20120412170924.GA18049@opensource.wolfsonmicro.com>
Date:	Thu, 12 Apr 2012 18:09:24 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Linus Walleij <linus.walleij@...ricsson.com>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Stephen Warren <swarren@...dia.com>,
	Shawn Guo <shawn.guo@...escale.com>,
	Thomas Abraham <thomas.abraham@...aro.org>,
	Dong Aisheng <dong.aisheng@...aro.org>,
	Rajendra Nayak <rajendra.nayak@...aro.org>,
	Haojian Zhuang <haojian.zhuang@...vell.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH v2] pinctrl: implement pinctrl deferred probing

On Wed, Apr 11, 2012 at 10:34:08AM +0200, Linus Walleij wrote:
> From: Linus Walleij <linus.walleij@...aro.org>
> 
> If drivers try to obtain pinctrl handles for a pin controller that
> has not yet registered to the subsystem, we need to be able to
> back out and retry with deferred probing. So let's return
> -EPROBE_DEFER whenever this location fails. Also downgrade the
> errors to info, maybe we will even set them to debug once the
> deferred probing is commonplace.

Reviwed-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>

Note that the probe deferral code already has info level logs every time
it does anything so you'll probably have a hint from that when it kicks
into action.

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