From e6ef58700a8afba46f2aa98a0de12c35e4b1f295 Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Sun, 21 Aug 2011 11:47:14 +0100
Subject: [PATCH] ASoC: Report IRQ_NONE when we don't see an interrupt from
 WM8962

This should never happen with level triggered IRQs.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
---
 sound/soc/codecs/wm8962.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index 75e784053603..add07fff4495 100644
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -3570,6 +3570,9 @@ static irqreturn_t wm8962_irq(int irq, void *data)
 	active = snd_soc_read(codec, WM8962_INTERRUPT_STATUS_2);
 	active &= ~mask;
 
+	if (!active)
+		return IRQ_NONE;
+
 	/* Acknowledge the interrupts */
 	snd_soc_write(codec, WM8962_INTERRUPT_STATUS_2, active);