commit: db966f8abb9ba74f7d5a7230f51572f52c31c4e5
From: Mark Brown <[email protected]>
Date: Mon, 6 Feb 2012 12:07:08 +0000
Subject: ASoC: wm8994: Enabling VMID should take a runtime PM reference

We can enable VMID independently of the bias in some use cases so we need
to ensure that the core device is powered up.

Signed-off-by: Mark Brown <[email protected]>
Cc: [email protected]
---
 sound/soc/codecs/wm8994.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index 8623950..81795eb 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -770,6 +770,8 @@ static void vmid_reference(struct snd_soc_codec *codec)
 {
        struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
 
+       pm_runtime_get_sync(codec->dev);
+
        wm8994->vmid_refcount++;
 
        dev_dbg(codec->dev, "Referencing VMID, refcount is now %d\n",
@@ -837,6 +839,8 @@ static void vmid_dereference(struct snd_soc_codec *codec)
                                    WM8994_VMID_BUF_ENA |
                                    WM8994_VMID_RAMP_MASK, 0);
        }
+
+       pm_runtime_put(codec->dev);
 }
 
 static int vmid_event(struct snd_soc_dapm_widget *w,
-- 
1.7.3.4
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