[PATCH] ASoC: es8316: Handle optional IRQ assignment

[Cristian Ciocaltea <cristian.ciocaltea@collabora.com>]

The driver is able to work fine without relying on a mandatory interrupt
being assigned to the I2C device. This is only needed when making use of
the jack-detect support.

However, the following warning message is always emitted when there is
no such interrupt available:

  es8316 0-0011: Failed to get IRQ 0: -22

Do not attempt to request an IRQ if it is not available/valid. This also
ensures the rather misleading message is not displayed anymore.

Also note the IRQ validation relies on commit dab472eb931bc291 ("i2c /
ACPI: Use 0 to indicate that device does not have interrupt assigned").

Fixes: 822257661031 ("ASoC: es8316: Add jack-detect support")
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
---
 sound/soc/codecs/es8316.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/sound/soc/codecs/es8316.c b/sound/soc/codecs/es8316.c
index 056c3082fe02..f7d7a9c91e04 100644
--- a/sound/soc/codecs/es8316.c
+++ b/sound/soc/codecs/es8316.c
@@ -842,12 +842,14 @@ static int es8316_i2c_probe(struct i2c_client *i2c_client)
 	es8316->irq = i2c_client->irq;
 	mutex_init(&es8316->lock);
 
-	ret = devm_request_threaded_irq(dev, es8316->irq, NULL, es8316_irq,
-					IRQF_TRIGGER_HIGH | IRQF_ONESHOT | IRQF_NO_AUTOEN,
-					"es8316", es8316);
-	if (ret) {
-		dev_warn(dev, "Failed to get IRQ %d: %d\n", es8316->irq, ret);
-		es8316->irq = -ENXIO;
+	if (es8316->irq > 0) {
+		ret = devm_request_threaded_irq(dev, es8316->irq, NULL, es8316_irq,
+						IRQF_TRIGGER_HIGH | IRQF_ONESHOT | IRQF_NO_AUTOEN,
+						"es8316", es8316);
+		if (ret) {
+			dev_warn(dev, "Failed to get IRQ %d: %d\n", es8316->irq, ret);
+			es8316->irq = -ENXIO;
+		}
 	}
 
 	return devm_snd_soc_register_component(&i2c_client->dev,
-- 
2.40.0