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 <bgolaszew...@baylibre.com>
---
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 24fce2a..12f0e12 100644
--- a/drivers/hwmon/ina2xx.c
+++ b/drivers/hwmon/ina2xx.c
@@ -299,7 +299,8 @@ 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);
--
2.1.3
--
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