+ struct snd_soc_codec *codec;
+ int ret;
+
+ if (wm8727_codec) {
+ dev_err(&pdev->dev, "Another WM8727 is registered\n");
+ return -EBUSY;
+ }
+
+ codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
+ if (codec == NULL)
+ return -ENOMEM;
+ wm8727_codec = codec;
+
+ platform_set_drvdata(pdev, codec);
+
+ mutex_init(&codec->mutex);
+ codec->dev = &pdev->dev;
+ codec->name = "WM8727";
+ codec->owner = THIS_MODULE;
+ codec->dai = &wm8727_dai;
+ codec->num_dai = 1;
+ INIT_LIST_HEAD(&codec->dapm_widgets);
+ INIT_LIST_HEAD(&codec->dapm_paths);
+