iio: adc: stm32-dfsdm: manage the get_irq error case

During probe, check the "get_irq" error value.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c
index 19adc2b23472bb077a5bce8e563c38e19da3dfa8..588907cc3b6b2eec92e27c0399660359a994244a 100644 (file)
--- a/drivers/iio/adc/stm32-dfsdm-adc.c
+++ b/drivers/iio/adc/stm32-dfsdm-adc.c
@@ -1456,6 +1456,12 @@ static int stm32_dfsdm_adc_probe(struct platform_device *pdev)
         * So IRQ associated to filter instance 0 is dedicated to the Filter 0.
         */
        irq = platform_get_irq(pdev, 0);
+       if (irq < 0) {
+               if (irq != -EPROBE_DEFER)
+                       dev_err(dev, "Failed to get IRQ: %d\n", irq);
+               return irq;
+       }
+
        ret = devm_request_irq(dev, irq, stm32_dfsdm_irq,
                               0, pdev->name, adc);
        if (ret < 0) {