[PATCH] ASoC: wcd-mbhc-v2: Revert "ASoC: wcd-mbhc-v2: use pm_runtime_resume_and_get()"

[Krzysztof Kozlowski]

This reverts commit ddea4bbf287b6028eaa15a185d0693856956ecf2 ("ASoC:
wcd-mbhc-v2: use pm_runtime_resume_and_get()"), because it introduced
double runtime PM put if pm_runtime_get_sync() returns -EACCES:

  wcd934x-codec wcd934x-codec.3.auto: WCD934X Minor:0x1 Version:0x401
  wcd934x-codec wcd934x-codec.3.auto: Runtime PM usage count underflow!

The commit claimed no changes in functionality except dropping the
reference on -EACCESS.  This is exactly the change introducing bug
because function calls unconditionally pm_runtime_put_autosuspend() at
the end.

Cc: Bard Liao <yung-chuan.liao at linux.intel.com>
Cc: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Cc: Kai Vehmanen <kai.vehmanen at linux.intel.com>
Cc: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Cc: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>
Cc: Cezary Rojewski <cezary.rojewski at intel.com>
Cc: <stable at vger.kernel.org>
Fixes: ddea4bbf287b ("ASoC: wcd-mbhc-v2: use pm_runtime_resume_and_get()")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
---
 sound/soc/codecs/wcd-mbhc-v2.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/sound/soc/codecs/wcd-mbhc-v2.c b/sound/soc/codecs/wcd-mbhc-v2.c
index b16a18dbfe7a..1911750f7445 100644
--- a/sound/soc/codecs/wcd-mbhc-v2.c
+++ b/sound/soc/codecs/wcd-mbhc-v2.c
@@ -714,11 +714,12 @@ static int wcd_mbhc_initialise(struct wcd_mbhc *mbhc)
 	struct snd_soc_component *component = mbhc->component;
 	int ret;
 
-	ret = pm_runtime_resume_and_get(component->dev);
+	ret = pm_runtime_get_sync(component->dev);
 	if (ret < 0 && ret != -EACCES) {
 		dev_err_ratelimited(component->dev,
-				    "pm_runtime_resume_and_get failed in %s, ret %d\n",
+				    "pm_runtime_get_sync failed in %s, ret %d\n",
 				    __func__, ret);
+		pm_runtime_put_noidle(component->dev);
 		return ret;
 	}
 
@@ -1096,11 +1097,12 @@ static void wcd_correct_swch_plug(struct work_struct *work)
 	mbhc = container_of(work, struct wcd_mbhc, correct_plug_swch);
 	component = mbhc->component;
 
-	ret = pm_runtime_resume_and_get(component->dev);
+	ret = pm_runtime_get_sync(component->dev);
 	if (ret < 0 && ret != -EACCES) {
 		dev_err_ratelimited(component->dev,
-				    "pm_runtime_resume_and_get failed in %s, ret %d\n",
+				    "pm_runtime_get_sync failed in %s, ret %d\n",
 				    __func__, ret);
+		pm_runtime_put_noidle(component->dev);
 		return;
 	}
 	micbias_mv = wcd_mbhc_get_micbias(mbhc);
-- 
2.34.1