From e794704000cf7954039b8daab9dfae2a74142f07 Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Mon, 5 Jan 2015 15:20:54 +0100 Subject: [PATCH] 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: / Bail-out from ina2xx_probe() if the configured value is greater than the calibration factor. Signed-off-by: Bartosz Golaszewski Signed-off-by: Guenter Roeck --- drivers/hwmon/ina2xx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c index 39e017bf92fd..3234e571805c 100644 --- a/drivers/hwmon/ina2xx.c +++ b/drivers/hwmon/ina2xx.c @@ -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); -- 2.11.0