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ASoC: rt5640: add default case for unexpected ID 

We may read an unexpected value when detemining which codec is attached.
In that case, either a unsupported codec is attached or something wrong
with I2C. The driver will not work properly on both cases. So we return
an error for that.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Bard Liao 2014-05-06 15:56:06 +08:00 committed by Mark Brown
parent 4eefa0d850
commit 57f174f47e
1 changed files with 4 additions and 0 deletions
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4
sound/soc/codecs/rt5640.c
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@ -2018,6 +2018,10 @@ static int rt5640_probe(struct snd_soc_codec *codec)
rt5639_specific_dapm_routes,
ARRAY_SIZE(rt5639_specific_dapm_routes));
break;
default:
dev_err(codec->dev,
"The driver is for RT5639 RT5640 or RT5642 only\n");
return -ENODEV;
}
return 0;