Commit 1e46774f authored Aug 27, 2018 by Matthias Kaehlcke Committed by Jonathan Cameron Sep 02, 2018

iio: adc: qcom-spmi-adc5: Verify channel numbers from DT



The driver only defines a subset of all possible ADC channels. Channel
numbers read from the device tree are accepted as long as they don't
exceed a max value, even when no channel definition exists. Add a
check to abort initialization in this case.

Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

parent 21eab786

drivers/iio/adc/qcom-spmi-adc5.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -519,7 +519,8 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc,
		return ret;
		}

		if (chan > ADC5_PARALLEL_ISENSE_VBAT_IDATA) {
		if (chan > ADC5_PARALLEL_ISENSE_VBAT_IDATA \|\|
		!data->adc_chans[chan].datasheet_name) {
		dev_err(dev, "%s invalid channel number %d\n", name, chan);
		return -EINVAL;
		}