linux-kernel - Re: [PATCH 4/8] ARM: mvebu: make use of of_find_matching_node_and

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Message-ID: <20140211181048.6934bdd3@skate>
Date:	Tue, 11 Feb 2014 18:10:48 +0100
From:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
To:	Jason Cooper <jason@...edaemon.net>
Cc:	Josh Cartwright <joshc@...eaurora.org>,
	Andrew Lunn <andrew@...n.ch>,
	Russell King <linux@....linux.org.uk>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	Gregory Clement <gregory.clement@...e-electrons.com>,
	linux-arm-kernel@...ts.infradead.org,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Subject: Re: [PATCH 4/8] ARM: mvebu: make use of
 of_find_matching_node_and_match

Dear Jason Cooper,

On Tue, 11 Feb 2014 11:53:14 -0500, Jason Cooper wrote:

> > -	np = of_find_matching_node(NULL, of_system_controller_table);
> > +	np = of_find_matching_node_and_match(NULL, of_system_controller_table,
> > +					     &match);
> >  	if (np) {
> > -		const struct of_device_id *match =
> > -		    of_match_node(of_system_controller_table, np);
> 
> 
> > -		BUG_ON(!match);
> 
> Gregory, is it ok to remove this?  It was added with the original code
> submission for mach-mvebu.  mvebu_restart() will handle this
> gracefully...

The BUG_ON here can normally never be reached. If
of_find_matching_node() returns a non-NULL result, then of_match_node()
should also return a non-NULL result.

Or I'm missing something :)

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