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mfd: fix pcap adc locking

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Release the lock on error.

Signed-off-by: Daniel Ribeiro <[email protected]>
Signed-off-by: Samuel Ortiz <[email protected]>
This commit is contained in:
Daniel Ribeiro 2009-06-23 12:30:58 -03:00 • committed by Samuel Ortiz
commit 1c90ea2c7e
1 changed files with 3 additions and 1 deletions
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4
drivers/mfd/ezx-pcap.c
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@ -238,8 +238,10 @@ static irqreturn_t pcap_adc_irq(int irq, void *_pcap)
mutex_lock(&pcap->adc_mutex);
req = pcap->adc_queue[pcap->adc_head];
if (WARN(!req, KERN_WARNING "adc irq without pending request\n"))
if (WARN(!req, KERN_WARNING "adc irq without pending request\n")) {
mutex_unlock(&pcap->adc_mutex);
return IRQ_HANDLED;
}
/* read requested channels results */
ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp);