[PATCH] hwmon: (ina3221) Clamp shunt resistor value from DT

[Nicolin Chen]

The input->shunt_resistor is int type while the value from DT is
unsigned int. Meanwhile, a divide-by-zero error would happen if
the value is 0. So this patch just simply clamps the value.

Signed-off-by: Nicolin Chen <nicoleotsuka@xxxxxxxxx>
---
 drivers/hwmon/ina3221.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/ina3221.c b/drivers/hwmon/ina3221.c
index c3a497aed345..ce8f0a8c4982 100644
--- a/drivers/hwmon/ina3221.c
+++ b/drivers/hwmon/ina3221.c
@@ -536,8 +536,10 @@ static int ina3221_probe_child_from_dt(struct device *dev,
 	of_property_read_string(child, "label", &input->label);
 
 	/* Overwrite default shunt resistor value optionally */
-	if (!of_property_read_u32(child, "shunt-resistor-micro-ohms", &val))
+	if (!of_property_read_u32(child, "shunt-resistor-micro-ohms", &val)) {
+		val = clamp_val(val, 1, INT_MAX);
 		input->shunt_resistor = val;
+	}
 
 	return 0;
 }
-- 
2.17.1