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regulator: ltc3589: Make IRQ optional 

It's perfectly valid to use the LTC3589 without an interrupt pin
connected to it. Currently, the driver probing fails when client->irq
is 0 (which means "no interrupt"). Don't register the interrupt
handler in that case but successfully finish the device probing instead.

Signed-off-by: Bernhard Walle <bernhard@bwalle.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Bernhard Walle 2016-02-10 21:37:30 +01:00 committed by Mark Brown
parent 92e963f50f
commit d4930cf0ae
1 changed files with 9 additions and 6 deletions
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15
drivers/regulator/ltc3589.c
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@ -520,12 +520,15 @@ static int ltc3589_probe(struct i2c_client *client,
}
}
ret = devm_request_threaded_irq(dev, client->irq, NULL, ltc3589_isr,
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
client->name, ltc3589);
if (ret) {
dev_err(dev, "Failed to request IRQ: %d\n", ret);
return ret;
if (client->irq) {
ret = devm_request_threaded_irq(dev, client->irq, NULL,
ltc3589_isr,
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
client->name, ltc3589);
if (ret) {
dev_err(dev, "Failed to request IRQ: %d\n", ret);
return ret;
}
}
return 0;