diff options
| author | Antoniu Miclaus <antoniu.miclaus@analog.com> | 2023-10-11 16:57:53 +0300 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2023-10-28 09:21:36 -0700 |
| commit | 10b02902048737f376104bc69e5212466e65a542 (patch) | |
| tree | 098ca631fb1edd1c4bc61ff066b710b5abbbd4b3 /drivers/hwmon | |
| parent | b92b2984a5b62099ab7731bc3a30a0d7c83a01d4 (diff) | |
| download | linux-10b02902048737f376104bc69e5212466e65a542.tar.gz | |
hwmon: (ltc2992) Avoid division by zero
Do not allow setting shunt resistor to 0. This results in a division by
zero when performing current value computations based on input voltages
and connected resistor values.
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://lore.kernel.org/r/20231011135754.13508-1-antoniu.miclaus@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/ltc2992.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/hwmon/ltc2992.c b/drivers/hwmon/ltc2992.c index 589bcd07ce7f7..001799bc28ed6 100644 --- a/drivers/hwmon/ltc2992.c +++ b/drivers/hwmon/ltc2992.c @@ -875,8 +875,12 @@ static int ltc2992_parse_dt(struct ltc2992_state *st) } ret = fwnode_property_read_u32(child, "shunt-resistor-micro-ohms", &val); - if (!ret) + if (!ret) { + if (!val) + return dev_err_probe(&st->client->dev, -EINVAL, + "shunt resistor value cannot be zero\n"); st->r_sense_uohm[addr] = val; + } } return 0; |