[PATCH 2/9] iio: adc: rzt2h: store IRQ in private state
From: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Date: 2026-08-28 15:01:02
Also in:
linux-iio, linux-renesas-soc, lkml
Subsystem:
iio subsystem and drivers, renesas rz/t2h / rz/n2h a/d driver, the rest · Maintainers:
Jonathan Cameron, Cosmin Tanislav, Linus Torvalds
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@renesas.com> --- 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