[PATCH AUTOSEL 5.1 002/141] iio: adc: stm32-dfsdm: manage the get_irq error case

[Sasha Levin]

From: Fabien Dessenne <fabien.desse...@st.com>

[ Upstream commit 3e53ef91f826957dec013c47707ffc1bb42b42d7 ]

During probe, check the "get_irq" error value.

Signed-off-by: Fabien Dessenne <fabien.desse...@st.com>
Acked-by: Fabrice Gasnier <fabrice.gasn...@st.com>
Signed-off-by: Jonathan Cameron <jonathan.came...@huawei.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/iio/adc/stm32-dfsdm-adc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c 
b/drivers/iio/adc/stm32-dfsdm-adc.c
index fcd4a1c00ca0..15a115210108 100644
--- a/drivers/iio/adc/stm32-dfsdm-adc.c
+++ b/drivers/iio/adc/stm32-dfsdm-adc.c
@@ -1144,6 +1144,12 @@ 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) {
-- 
2.20.1