linux-kernel - Re: [PATCH] mtd: nand: atmel

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Date:	Fri, 12 Sep 2014 00:05:00 +0200
From:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
To:	Boris BREZILLON <boris.brezillon@...e-electrons.com>
Cc:	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	linux-kernel@...r.kernel.org,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	linux-mtd@...ts.infradead.org,
	Brian Norris <computersforpeace@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] mtd: nand: atmel_nand: retrieve NFC clock

Dear Boris BREZILLON,

On Thu, 11 Sep 2014 17:38:54 +0200, Boris BREZILLON wrote:

> > Anyway, with or without the docs I think this patch breaks DT backward
> > compatibility.
> > 
> > Or am I missing something?
> 
> Indeed, this block of code should be placed at the end of the probe
> function. I'll fix that.
> 
> Note that if the clk is missing it just print a warning message and
> return 0, so after moving the code, it should not break DT backward
> compat ;-).

You may want to use:

	dev_warn(FW_WARN "NFC clock missing, update your Device	Tree\n");

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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