AcoSail/kernel_optimize_test
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ASoC: Acknowledge WM8996 interrupts before acting on them

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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>
This commit is contained in:
Mark Brown 2011-07-20 13:49:58 +01:00
parent a9ba615134
commit 844970916c
1 changed files with 4 additions and 5 deletions
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9
sound/soc/codecs/wm8996.c
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@ -2404,6 +2404,8 @@ static irqreturn_t wm8996_irq(int irq, void *data)
}
irq_val &= ~snd_soc_read(codec, WM8996_INTERRUPT_STATUS_2_MASK);
snd_soc_write(codec, WM8996_INTERRUPT_STATUS_2, irq_val);
if (irq_val & (WM8996_DCS_DONE_01_EINT | WM8996_DCS_DONE_23_EINT)) {
dev_dbg(codec->dev, "DC servo IRQ\n");
complete(&wm8996->dcs_done);
@ -2420,13 +2422,10 @@ static irqreturn_t wm8996_irq(int irq, void *data)
if (irq_val & WM8996_MICD_EINT)
wm8996_micd(codec);
if (irq_val) {
snd_soc_write(codec, WM8996_INTERRUPT_STATUS_2, irq_val);
if (irq_val)
return IRQ_HANDLED;
} else {
else
return IRQ_NONE;
}
}
static irqreturn_t wm8996_edge_irq(int irq, void *data)