diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index 5f8f824d997f..63b616ce3a6e 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -2308,6 +2308,21 @@ static int pmbus_init_common(struct i2c_client *client, struct pmbus_data *data, struct device *dev = &client->dev; int page, ret; + /* + * Figure out if PEC is enabled before accessing any other register. + * Make sure PEC is disabled, will be enabled later if needed. + */ + client->flags &= ~I2C_CLIENT_PEC; + + /* 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)) { + if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_PEC)) + client->flags |= I2C_CLIENT_PEC; + } + } + /* * Some PMBus chips don't support PMBUS_STATUS_WORD, so try * to use PMBUS_STATUS_BYTE instead if that is the case. @@ -2326,19 +2341,6 @@ static int pmbus_init_common(struct i2c_client *client, struct pmbus_data *data, data->has_status_word = true; } - /* Make sure PEC is disabled, will be enabled later if needed */ - client->flags &= ~I2C_CLIENT_PEC; - - /* 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)) { - if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_PEC)) { - client->flags |= I2C_CLIENT_PEC; - } - } - } - /* * Check if the chip is write protected. If it is, we can not clear * faults, and we should not try it. Also, in that case, writes into