From: Mark Brown Date: Wed, 20 Jul 2011 12:50:10 +0000 (+0100) Subject: ASoC: Acknowledge WM8962 interrupts before acting on them X-Git-Url: http://git.mmlx.us/?a=commitdiff_plain;h=3198b9eb514fd27dd15c55f36b17ac2cddade1a5;p=linux-edison.git ASoC: Acknowledge WM8962 interrupts before acting on them This closes the small race between a status being read in response to an interrupt and clearing the interrupt, meaning that if the status changes between those periods we might not get a reassertion of the interrupt. Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c index 8499c563a9b..60d740ebeb5 100644 --- a/sound/soc/codecs/wm8962.c +++ b/sound/soc/codecs/wm8962.c @@ -3409,6 +3409,9 @@ static irqreturn_t wm8962_irq(int irq, void *data) active = snd_soc_read(codec, WM8962_INTERRUPT_STATUS_2); active &= ~mask; + /* Acknowledge the interrupts */ + snd_soc_write(codec, WM8962_INTERRUPT_STATUS_2, active); + if (active & WM8962_FLL_LOCK_EINT) { dev_dbg(codec->dev, "FLL locked\n"); complete(&wm8962->fll_lock); @@ -3433,9 +3436,6 @@ static irqreturn_t wm8962_irq(int irq, void *data) msecs_to_jiffies(250)); } - /* Acknowledge the interrupts */ - snd_soc_write(codec, WM8962_INTERRUPT_STATUS_2, active); - return IRQ_HANDLED; }