[PATCH 2/9] iio: adc: rzt2h: store IRQ in private state

[Cosmin Tanislav]

To prepare for adding support for DMA transfers, store the IRQ in
private state to disable it while DMA is in progress. The RZ/T2H ICU
does not mask the interrupts itself when they are being used for DMA
transfers.

Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@xxxxxxxxxxx>
---
 drivers/iio/adc/rzt2h_adc.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/iio/adc/rzt2h_adc.c b/drivers/iio/adc/rzt2h_adc.c
index 42ff6bf2ab08..470b16b5b9c8 100644
--- a/drivers/iio/adc/rzt2h_adc.c
+++ b/drivers/iio/adc/rzt2h_adc.c
@@ -42,6 +42,8 @@ struct rzt2h_adc {
 
 	const struct iio_chan_spec *channels;
 	unsigned int num_channels;
+
+	int irq;
 };
 
 static void rzt2h_adc_start(struct rzt2h_adc *adc, unsigned int conversion_type)
@@ -209,7 +211,7 @@ static int rzt2h_adc_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct iio_dev *indio_dev;
 	struct rzt2h_adc *adc;
-	int ret, irq;
+	int ret;
 
 	indio_dev = devm_iio_device_alloc(dev, sizeof(*adc));
 	if (!indio_dev)
@@ -239,11 +241,11 @@ static int rzt2h_adc_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	irq = platform_get_irq_byname(pdev, "adi");
-	if (irq < 0)
-		return irq;
+	adc->irq = platform_get_irq_byname(pdev, "adi");
+	if (adc->irq < 0)
+		return adc->irq;
 
-	ret = devm_request_irq(dev, irq, rzt2h_adc_isr, 0, dev_name(dev), adc);
+	ret = devm_request_irq(dev, adc->irq, rzt2h_adc_isr, 0, dev_name(dev), adc);
 	if (ret)
 		return ret;
 
-- 
2.55.0