linux-kernel - Re: [PATCH 11/19] regmap: avoid undefined return from regmap_read

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Message-ID: <20130126045206.GB10580@opensource.wolfsonmicro.com>
Date:	Sat, 26 Jan 2013 12:52:09 +0800
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH 11/19] regmap: avoid undefined return from
 regmap_read_debugfs

On Sat, Jan 26, 2013 at 12:42:26PM +0800, Mark Brown wrote:
> On Fri, Jan 25, 2013 at 02:14:28PM +0000, Arnd Bergmann wrote:
> > Gcc warns about the case where regmap_read_debugfs tries

> Are you sure about that function name?

> > to walk an empty map->debugfs_off_cache list, which results
> > in uninitialized variable getting returned.

> > Setting this variable to 0 first avoids the warning and
> > the potentially undefined value.

> This probably won't apply against current code as there's already a
> better fix there, in general just picking a value to initialise masks
> errors.

Resending with corrected list address; to be clear please don't send
this.

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