[PATCH v3 04/11] hwmon: chipcap2: defer probe when IRQs are unavailable

[Javier Carrasco <javier.carrasco.cruz@gmail.com>]

This device can work with or without interrupts, but if they
are provided and still not available, but if -EPROBE_DEFER is read,
its value must be propagated to enable probe retries.

Fixes: 3af350929e75 ("hwmon: Add support for Amphenol ChipCap 2")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
---
 drivers/hwmon/chipcap2.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/hwmon/chipcap2.c b/drivers/hwmon/chipcap2.c
index aec4adf98658..37dbf6a76fbc 100644
--- a/drivers/hwmon/chipcap2.c
+++ b/drivers/hwmon/chipcap2.c
@@ -636,6 +636,8 @@ static int cc2_request_ready_irq(struct cc2_data *data, struct device *dev)
 	int ret = 0;
 
 	data->irq_ready = fwnode_irq_get_byname(dev_fwnode(dev), "ready");
+	if (data->irq_ready == -EPROBE_DEFER)
+		return data->irq_ready;
 	if (data->irq_ready > 0) {
 		init_completion(&data->complete);
 		ret = devm_request_threaded_irq(dev, data->irq_ready, NULL,
@@ -653,6 +655,8 @@ static int cc2_request_alarm_irqs(struct cc2_data *data, struct device *dev)
 	int ret = 0;
 
 	data->irq_low = fwnode_irq_get_byname(dev_fwnode(dev), "low");
+	if (data->irq_low == -EPROBE_DEFER)
+		return data->irq_low;
 	if (data->irq_low > 0) {
 		ret = devm_request_threaded_irq(dev, data->irq_low, NULL,
 						cc2_low_interrupt,
@@ -666,6 +670,8 @@ static int cc2_request_alarm_irqs(struct cc2_data *data, struct device *dev)
 	}
 
 	data->irq_high = fwnode_irq_get_byname(dev_fwnode(dev), "high");
+	if (data->irq_high == -EPROBE_DEFER)
+		return data->irq_high;
 	if (data->irq_high > 0) {
 		ret = devm_request_threaded_irq(dev, data->irq_high, NULL,
 						cc2_high_interrupt,

-- 
2.43.0