diff options
| -rw-r--r-- | drivers/hwmon/pmbus/pmbus_core.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index 1f7fa5337974..01a1ffc74bb6 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -2216,11 +2216,14 @@ static int pmbus_init_common(struct i2c_client *client, struct pmbus_data *data, data->has_status_word = true; } - /* Enable PEC if the controller supports it */ + /* Enable PEC if the controller and bus supports it */ if (!(data->flags & PMBUS_NO_CAPABILITY)) { ret = i2c_smbus_read_byte_data(client, PMBUS_CAPABILITY); - if (ret >= 0 && (ret & PB_CAPABILITY_ERROR_CHECK)) - client->flags |= I2C_CLIENT_PEC; + if (ret >= 0 && (ret & PB_CAPABILITY_ERROR_CHECK)) { + if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_PEC)) { + client->flags |= I2C_CLIENT_PEC; + } + } } /* |