[PATCH 5.15 138/181] iio: adc: mp2629: fix potential array out of bound access

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From: Saravanan Sekar <sravanhome@xxxxxxxxx>

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@xxxxxxxxx>
Link: https://lore.kernel.org/r/20221029093000.45451-4-sravanhome@xxxxxxxxx
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/iio/adc/mp2629_adc.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- 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,





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