iio: adc: mp2629: fix potential array out of bound access

commit ca1547ab15f48dc81624183ae17a2fd1bad06dfc upstream.

Add sentinel at end of maps to avoid potential array out of
bound access in iio core.

Fixes: 7abd9fb64682 ("iio: adc: mp2629: Add support for mp2629 ADC driver")
Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
Link: https://lore.kernel.org/r/20221029093000.45451-4-sravanhome@gmail.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/iio/adc/mp2629_adc.c b/drivers/iio/adc/mp2629_adc.c
index e7fbfe92e884ae0647b03c8ad3b69487758598b4..79d8fd79b0549dffa2e17c646c2ccf9f037df8ee 100644 (file)
--- a/drivers/iio/adc/mp2629_adc.c
+++ b/drivers/iio/adc/mp2629_adc.c
@@ -56,7 +56,8 @@ static struct iio_map mp2629_adc_maps[] = {
        MP2629_MAP(SYSTEM_VOLT, "system-volt"),
        MP2629_MAP(INPUT_VOLT, "input-volt"),
        MP2629_MAP(BATT_CURRENT, "batt-current"),
-       MP2629_MAP(INPUT_CURRENT, "input-current")
+       MP2629_MAP(INPUT_CURRENT, "input-current"),
+       { }
 };
 
 static int mp2629_read_raw(struct iio_dev *indio_dev,