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

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Date:	Sat, 26 Jan 2013 12:42:27 +0800
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-arm-kernel@...t.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 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.

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