[alsa-devel] [PATCH] ASoC: Use pm_wakeup_event() in WM8962 jack detection

Mark Brown broonie at opensource.wolfsonmicro.com
Wed Nov 3 19:50:18 CET 2010

Ensure that the system does not suspend while we process a WM8962 jack
event by using pm_wakeup_event() to block the suspend while we're waiting
for the jack to settle. Use a slightly longer timeout than the jack waits
to allow for other stuff to take over and delays in scheduling.

Signed-off-by: Mark Brown <broonie at opensource.wolfsonmicro.com>
 sound/soc/codecs/wm8962.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index 894d0cd..2eaf9bb 100644
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -3353,6 +3353,8 @@ static irqreturn_t wm8962_irq(int irq, void *data)
 	if (active & (WM8962_MICSCD_EINT | WM8962_MICD_EINT)) {
 		dev_dbg(codec->dev, "Microphone event detected\n");
+		pm_wakeup_event(codec->dev, 300);

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