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-rw-r--r--drivers/iio/adc/stm32-dfsdm-adc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c
index df264e042bd8..cc8ab86c1caa 100644
--- a/drivers/iio/adc/stm32-dfsdm-adc.c
+++ b/drivers/iio/adc/stm32-dfsdm-adc.c
@@ -1108,8 +1108,8 @@ static int stm32_dfsdm_adc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, adc);
ret = of_property_read_u32(dev->of_node, "reg", &adc->fl_id);
- if (ret != 0) {
- dev_err(dev, "Missing reg property\n");
+ if (ret != 0 || adc->fl_id >= adc->dfsdm->num_fls) {
+ dev_err(dev, "Missing or bad reg property\n");
return -EINVAL;
}