ASoC: Fix leaks in WM8988 registration error handling

[deliverable/linux.git] / sound / soc / soc-dapm.c

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 653435930ad8731ccf0a9280cf8630c170b72e8c..5157ec110cfa0dafa94008060ee50b8f0403785c 100644 (file)
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2032,6 +2032,36 @@ void snd_soc_dapm_free(struct snd_soc_device *socdev)
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
 
+/*
+ * snd_soc_dapm_shutdown - callback for system shutdown
+ */
+void snd_soc_dapm_shutdown(struct snd_soc_device *socdev)
+{
+       struct snd_soc_codec *codec = socdev->card->codec;
+       struct snd_soc_dapm_widget *w;
+       LIST_HEAD(down_list);
+       int powerdown = 0;
+
+       list_for_each_entry(w, &codec->dapm_widgets, list) {
+               if (w->power) {
+                       dapm_seq_insert(w, &down_list, dapm_down_seq);
+                       w->power = 0;
+                       powerdown = 1;
+               }
+       }
+
+       /* If there were no widgets to power down we're already in
+        * standby.
+        */
+       if (powerdown) {
+               snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_PREPARE);
+               dapm_seq_run(codec, &down_list, 0, dapm_down_seq);
+               snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_STANDBY);
+       }
+
+       snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_OFF);
+}
+
 /* Module information */
 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");