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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>
This commit is contained in:
Dan Carpenter 2009-04-06 03:50:46 +02:00 committed by Mark Brown
parent 103f211d0b
commit 09318c47b6
1 changed files with 2 additions and 1 deletions
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3
sound/soc/codecs/ak4535.c
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@ -659,7 +659,8 @@ static int ak4535_remove(struct platform_device *pdev)
snd_soc_free_pcms(socdev); snd_soc_free_pcms(socdev);
snd_soc_dapm_free(socdev); snd_soc_dapm_free(socdev);
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
i2c_unregister_device(codec->control_data); if (codec->control_data)
i2c_unregister_device(codec->control_data);
i2c_del_driver(&ak4535_i2c_driver); i2c_del_driver(&ak4535_i2c_driver);
#endif #endif
kfree(codec->private_data); kfree(codec->private_data);