ASoC: Fix null dereference in ak4535_remove()
ak4535_remove() from sound/soc/codecs/ak4535.c calls i2c_unregister_device() with a possibly null pointer. This bug was found by smatch (http://repo.or.cz/w/smatch.git/). Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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@ -659,7 +659,8 @@ static int ak4535_remove(struct platform_device *pdev)
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snd_soc_free_pcms(socdev);
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snd_soc_dapm_free(socdev);
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#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
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i2c_unregister_device(codec->control_data);
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if (codec->control_data)
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i2c_unregister_device(codec->control_data);
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i2c_del_driver(&ak4535_i2c_driver);
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#endif
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kfree(codec->private_data);
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