linux-kernel - Re: [PATCH] ASoC: Fix inconsistent meaning of default case while checking alc5623->id

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Date:	Fri, 03 Dec 2010 12:01:26 +0000
From:	Liam Girdwood <lrg@...mlogic.co.uk>
To:	Axel Lin <axel.lin@...il.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Arnaud Patard <arnaud.patard@...-net.org>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	alsa-devel@...a-project.org
Subject: Re: [PATCH] ASoC: Fix inconsistent meaning of default case while
 checking alc5623->id

On Fri, 2010-12-03 at 17:25 +0800, Axel Lin wrote:
> In alc5623_i2c_probe(),
> the default case for checking alc5623->id behaves the same as case 0x23.
> However, In alc5623_probe() the default case for checking alc5623->id
> becomes to be the same as case 0x21.
> This makes the meaning of default case inconsistent.
> 
> Since we have checked codec id in alc5623_i2c_probe() by comparing
> vid2 with id->driver_data, it is not possible to run into the default case now.
> 
> In case we may add more supported devices to alc5623_i2c_table in the future,
> this patch changes the default case return -EINVAL to let people know that
> they should not run into this case. They should also add a new case accordingly
> for the new id.
> 
> Signed-off-by: Axel Lin <axel.lin@...il.com>
Acked-by: Liam Girdwood <lrg@...mlogic.co.uk>
-- 
Freelance Developer, SlimLogic Ltd
ASoC and Voltage Regulator Maintainer.
http://www.slimlogic.co.uk

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