Commit e7947040 authored Jan 05, 2015 by Bartosz Golaszewski Committed by Guenter Roeck Jan 25, 2015

hwmon: (ina2xx) don't accept shunt values greater than the calibration factor



Shunt resistance values greater than the chip's calibration factor make no
sense since the actual value written to the register equals:

	<calibration factor> / <shunt>

Bail-out from ina2xx_probe() if the configured value is greater than the
calibration factor.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

parent f4fe9027

drivers/hwmon/ina2xx.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -313,7 +313,8 @@ static int ina2xx_probe(struct i2c_client *client,
		data->config = &ina2xx_config[data->kind];
		data->client = client;

		if (data->rshunt <= 0)
		if (data->rshunt <= 0 \|\|
		data->rshunt > data->config->calibration_factor)
		return -ENODEV;

		ret = ina2xx_init(data);