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Commit dfa105b1 authored by Fabrice Gasnier's avatar Fabrice Gasnier Committed by Jonathan Cameron
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iio: adc: stm32-dfsdm: add check on max filter id 



reg property should be checked against number of available filters.
BTW, dfsdm->num_fls wasn't used. But it can be used for this purpose.
This prevents using data out of allocated dfsdm->fl_list array.

Signed-off-by: default avatarFabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent c620da3a

drivers/iio/adc/stm32-dfsdm-adc.c

+2 −2
Original line number Diff line number Diff line
@@ -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;

	}