Simplify code, reduce code size, and attach hwmon attributes to
hwmon device.
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
v2: Use PTR_ERR_OR_ZERO in probe function
drivers/hwmon/adm1021.c | 70 +++++++++++++++--------------------------------
1 file changed, 22 insertions(+), 48 deletions(-)
diff --git a/drivers/hwmon/adm1021.c b/drivers/hwmon/adm1021.c
index 29dd9f7..3eb4281 100644
--- a/drivers/hwmon/adm1021.c
+++ b/drivers/hwmon/adm1021.c
@@ -79,9 +79,11 @@ enum chips {
/* Each client has this additional data */
struct adm1021_data {
- struct device *hwmon_dev;
+ struct i2c_client *client;
enum chips type;
+ const struct attribute_group *groups[3];
+
struct mutex update_lock;
char valid; /* !=0 if following fields are valid */
char low_power; /* !=0 if device in low power mode */
@@ -101,7 +103,6 @@ static int adm1021_probe(struct i2c_client *client,
static int adm1021_detect(struct i2c_client *client,
struct i2c_board_info *info);
static void adm1021_init_client(struct i2c_client *client);
-static int adm1021_remove(struct i2c_client *client);
static struct adm1021_data *adm1021_update_device(struct device *dev);
/* (amalysh) read only mode, otherwise any limit's writing confuse BIOS */
@@ -128,7 +129,6 @@ static struct i2c_driver adm1021_driver = {
.name = "adm1021",
},
.probe = adm1021_probe,
- .remove = adm1021_remove,
.id_table = adm1021_id,
.detect = adm1021_detect,
.address_list = normal_i2c,
@@ -182,8 +182,8 @@ static ssize_t set_temp_max(struct device *dev,
const char *buf, size_t count)
{
int index = to_sensor_dev_attr(devattr)->index;
- struct i2c_client *client = to_i2c_client(dev);
- struct adm1021_data *data = i2c_get_clientdata(client);
+ struct adm1021_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
long temp;
int err;
@@ -207,8 +207,8 @@ static ssize_t set_temp_min(struct device *dev,
const char *buf, size_t count)
{
int index = to_sensor_dev_attr(devattr)->index;
- struct i2c_client *client = to_i2c_client(dev);
- struct adm1021_data *data = i2c_get_clientdata(client);
+ struct adm1021_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
long temp;
int err;
@@ -238,8 +238,8 @@ static ssize_t set_low_power(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct adm1021_data *data = i2c_get_clientdata(client);
+ struct adm1021_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
char low_power;
unsigned long val;
int err;
@@ -412,15 +412,15 @@ static int adm1021_detect(struct i2c_client *client,
static int adm1021_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
+ struct device *dev = &client->dev;
struct adm1021_data *data;
- int err;
+ struct device *hwmon_dev;
- data = devm_kzalloc(&client->dev, sizeof(struct adm1021_data),
- GFP_KERNEL);
+ data = devm_kzalloc(dev, sizeof(struct adm1021_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
- i2c_set_clientdata(client, data);
+ data->client = client;
data->type = id->driver_data;
mutex_init(&data->update_lock);
@@ -428,29 +428,14 @@ static int adm1021_probe(struct i2c_client *client,
if (data->type != lm84 && !read_only)
adm1021_init_client(client);
- /* Register sysfs hooks */
- err = sysfs_create_group(&client->dev.kobj, &adm1021_group);
- if (err)
- return err;
-
- if (data->type != lm84) {
- err = sysfs_create_group(&client->dev.kobj, &adm1021_min_group);
- if (err)
- goto error;
- }
+ data->groups[0] = &adm1021_group;
+ if (data->type != lm84)
+ data->groups[1] = &adm1021_min_group;
- data->hwmon_dev = hwmon_device_register(&client->dev);
- if (IS_ERR(data->hwmon_dev)) {
- err = PTR_ERR(data->hwmon_dev);
- goto error;
- }
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data, data->groups);
- return 0;
-
-error:
- sysfs_remove_group(&client->dev.kobj, &adm1021_min_group);
- sysfs_remove_group(&client->dev.kobj, &adm1021_group);
- return err;
+ return PTR_ERR_OR_ZERO(hwmon_dev);
}
static void adm1021_init_client(struct i2c_client *client)
@@ -462,21 +447,10 @@ static void adm1021_init_client(struct i2c_client *client)
i2c_smbus_write_byte_data(client, ADM1021_REG_CONV_RATE_W, 0x04);
}
-static int adm1021_remove(struct i2c_client *client)
-{
- struct adm1021_data *data = i2c_get_clientdata(client);
-
- hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &adm1021_min_group);
- sysfs_remove_group(&client->dev.kobj, &adm1021_group);
-
- return 0;
-}
-
static struct adm1021_data *adm1021_update_device(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct adm1021_data *data = i2c_get_clientdata(client);
+ struct adm1021_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
mutex_lock(&data->update_lock);
@@ -484,7 +458,7 @@ static struct adm1021_data *adm1021_update_device(struct device *dev)
|| !data->valid) {
int i;
- dev_dbg(&client->dev, "Starting adm1021 update\n");
+ dev_dbg(dev, "Starting adm1021 update\n");
for (i = 0; i < 2; i++) {
data->temp[i] = 1000 *
--
1.7.9.7
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