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 <[email protected]> --- drivers/iio/adc/qcom-spmi-adc5.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/qcom-spmi-adc5.c b/drivers/iio/adc/qcom-spmi-adc5.c index 9c8e6f9e8248..ab5bec917c0a 100644 --- a/drivers/iio/adc/qcom-spmi-adc5.c +++ b/drivers/iio/adc/qcom-spmi-adc5.c @@ -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; } -- 2.19.0.rc0.228.g281dcd1b4d0-goog
