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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 <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
This commit is contained in:
Mark Brown 2011-07-20 13:50:10 +01:00
parent 09bddc8eb2
commit 3198b9eb51
1 changed files with 3 additions and 3 deletions
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6
sound/soc/codecs/wm8962.c
View File

@ -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;
}