From 8280325288176694a3c22e2f10fdab6d8de5bd99 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sat, 5 Jul 2014 11:22:44 +0800 Subject: [PATCH] hwmon: (lineage-pem) Convert to devm_hwmon_device_register_with_groups Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to simplify the code a bit. Signed-off-by: Axel Lin Signed-off-by: Guenter Roeck --- drivers/hwmon/lineage-pem.c | 66 +++++++++++++-------------------------------- 1 file changed, 19 insertions(+), 47 deletions(-) diff --git a/drivers/hwmon/lineage-pem.c b/drivers/hwmon/lineage-pem.c index ebbb9f4..84d791b 100644 --- a/drivers/hwmon/lineage-pem.c +++ b/drivers/hwmon/lineage-pem.c @@ -125,7 +125,8 @@ #define FAN_SPEED_LEN 5 struct pem_data { - struct device *hwmon_dev; + struct i2c_client *client; + const struct attribute_group *groups[4]; struct mutex update_lock; bool valid; @@ -160,8 +161,8 @@ abort: static struct pem_data *pem_update_device(struct device *dev) { - struct i2c_client *client = to_i2c_client(dev); - struct pem_data *data = i2c_get_clientdata(client); + struct pem_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; struct pem_data *ret = data; mutex_lock(&data->update_lock); @@ -444,18 +445,20 @@ static int pem_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct i2c_adapter *adapter = client->adapter; + struct device *dev = &client->dev; + struct device *hwmon_dev; struct pem_data *data; - int ret; + int ret, idx = 0; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_BYTE)) return -ENODEV; - data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; - i2c_set_clientdata(client, data); + data->client = client; mutex_init(&data->update_lock); /* @@ -471,14 +474,12 @@ static int pem_probe(struct i2c_client *client, if (ret < 0) return ret; - dev_info(&client->dev, "Firmware revision %d.%d.%d\n", + dev_info(dev, "Firmware revision %d.%d.%d\n", data->firmware_rev[0], data->firmware_rev[1], data->firmware_rev[2]); - /* Register sysfs hooks */ - ret = sysfs_create_group(&client->dev.kobj, &pem_group); - if (ret) - return ret; + /* sysfs hooks */ + data->groups[idx++] = &pem_group; /* * Check if input readings are supported. @@ -501,12 +502,9 @@ static int pem_probe(struct i2c_client *client, data->input_string[2] || data->input_string[3])) data->input_length = sizeof(data->input_string); } - ret = 0; - if (data->input_length) { - ret = sysfs_create_group(&client->dev.kobj, &pem_input_group); - if (ret) - goto out_remove_groups; - } + + if (data->input_length) + data->groups[idx++] = &pem_input_group; /* * Check if fan speed readings are supported. @@ -520,37 +518,12 @@ static int pem_probe(struct i2c_client *client, if (!ret && (data->fan_speed[0] || data->fan_speed[1] || data->fan_speed[2] || data->fan_speed[3])) { data->fans_supported = true; - ret = sysfs_create_group(&client->dev.kobj, &pem_fan_group); - if (ret) - goto out_remove_groups; - } - - data->hwmon_dev = hwmon_device_register(&client->dev); - if (IS_ERR(data->hwmon_dev)) { - ret = PTR_ERR(data->hwmon_dev); - goto out_remove_groups; + data->groups[idx++] = &pem_fan_group; } - return 0; - -out_remove_groups: - sysfs_remove_group(&client->dev.kobj, &pem_input_group); - sysfs_remove_group(&client->dev.kobj, &pem_fan_group); - sysfs_remove_group(&client->dev.kobj, &pem_group); - return ret; -} - -static int pem_remove(struct i2c_client *client) -{ - struct pem_data *data = i2c_get_clientdata(client); - - hwmon_device_unregister(data->hwmon_dev); - - sysfs_remove_group(&client->dev.kobj, &pem_input_group); - sysfs_remove_group(&client->dev.kobj, &pem_fan_group); - sysfs_remove_group(&client->dev.kobj, &pem_group); - - return 0; + hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, + data, data->groups); + return PTR_ERR_OR_ZERO(hwmon_dev); } static const struct i2c_device_id pem_id[] = { @@ -564,7 +537,6 @@ static struct i2c_driver pem_driver = { .name = "lineage_pem", }, .probe = pem_probe, - .remove = pem_remove, .id_table = pem_id, }; -- 2.7.4