ASoC: Convert ad1836 to devm_kzalloc()

Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/ad1836.c

@@ -341,7 +341,8 @@ static int __devinit ad1836_spi_probe(struct spi_device *spi)
 	struct ad1836_priv *ad1836;
 	int ret;
 
-	ad1836 = kzalloc(sizeof(struct ad1836_priv), GFP_KERNEL);
+	ad1836 = devm_kzalloc(&spi->dev, sizeof(struct ad1836_priv),
+			      GFP_KERNEL);
 	if (ad1836 == NULL)
 		return -ENOMEM;
 
@@ -351,17 +352,15 @@ static int __devinit ad1836_spi_probe(struct spi_device *spi)
 
 	ret = snd_soc_register_codec(&spi->dev,
 			&soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1);
-	if (ret < 0)
-		kfree(ad1836);
 	return ret;
 }
 
 static int __devexit ad1836_spi_remove(struct spi_device *spi)
 {
 	snd_soc_unregister_codec(&spi->dev);
-	kfree(spi_get_drvdata(spi));
 	return 0;
 }
+
 static const struct spi_device_id ad1836_ids[] = {
 	{ "ad1835", AD1835 },
 	{ "ad1836", AD1836 },