Simplify code, reduce code size, and attach hwmon attributes to
hwmon device.
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
drivers/hwmon/lm80.c | 64 ++++++++++++++++----------------------------------
1 file changed, 20 insertions(+), 44 deletions(-)
diff --git a/drivers/hwmon/lm80.c b/drivers/hwmon/lm80.c
index eba89aa..914d7e5 100644
--- a/drivers/hwmon/lm80.c
+++ b/drivers/hwmon/lm80.c
@@ -112,7 +112,7 @@ static inline long TEMP_FROM_REG(u16 temp)
*/
struct lm80_data {
- struct device *hwmon_dev;
+ struct i2c_client *client;
struct mutex update_lock;
char error; /* !=0 if error occurred during last update */
char valid; /* !=0 if following fields are valid */
@@ -140,7 +140,6 @@ static int lm80_probe(struct i2c_client *client,
const struct i2c_device_id *id);
static int lm80_detect(struct i2c_client *client, struct i2c_board_info *info);
static void lm80_init_client(struct i2c_client *client);
-static int lm80_remove(struct i2c_client *client);
static struct lm80_data *lm80_update_device(struct device *dev);
static int lm80_read_value(struct i2c_client *client, u8 reg);
static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value);
@@ -162,7 +161,6 @@ static struct i2c_driver lm80_driver = {
.name = "lm80",
},
.probe = lm80_probe,
- .remove = lm80_remove,
.id_table = lm80_id,
.detect = lm80_detect,
.address_list = normal_i2c,
@@ -191,8 +189,8 @@ static ssize_t set_in_##suffix(struct device *dev, \
struct device_attribute *attr, const char *buf, size_t count) \
{ \
int nr = to_sensor_dev_attr(attr)->index; \
- struct i2c_client *client = to_i2c_client(dev); \
- struct lm80_data *data = i2c_get_clientdata(client); \
+ struct lm80_data *data = dev_get_drvdata(dev); \
+ struct i2c_client *client = data->client; \
long val; \
int err = kstrtol(buf, 10, &val); \
if (err < 0) \
@@ -235,8 +233,8 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
- struct i2c_client *client = to_i2c_client(dev);
- struct lm80_data *data = i2c_get_clientdata(client);
+ struct lm80_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
unsigned long val;
int err = kstrtoul(buf, 10, &val);
if (err < 0)
@@ -259,8 +257,8 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
- struct i2c_client *client = to_i2c_client(dev);
- struct lm80_data *data = i2c_get_clientdata(client);
+ struct lm80_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
unsigned long min, val;
u8 reg;
int err = kstrtoul(buf, 10, &val);
@@ -332,8 +330,8 @@ show_temp(os_hyst, temp_os_hyst);
static ssize_t set_temp_##suffix(struct device *dev, \
struct device_attribute *attr, const char *buf, size_t count) \
{ \
- struct i2c_client *client = to_i2c_client(dev); \
- struct lm80_data *data = i2c_get_clientdata(client); \
+ struct lm80_data *data = dev_get_drvdata(dev); \
+ struct i2c_client *client = data->client; \
long val; \
int err = kstrtol(buf, 10, &val); \
if (err < 0) \
@@ -440,7 +438,7 @@ static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 13);
* Real code
*/
-static struct attribute *lm80_attributes[] = {
+static struct attribute *lm80_attrs[] = {
&sensor_dev_attr_in0_min.dev_attr.attr,
&sensor_dev_attr_in1_min.dev_attr.attr,
&sensor_dev_attr_in2_min.dev_attr.attr,
@@ -487,10 +485,7 @@ static struct attribute *lm80_attributes[] = {
&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
NULL
};
-
-static const struct attribute_group lm80_group = {
- .attrs = lm80_attributes,
-};
+ATTRIBUTE_GROUPS(lm80);
/* Return 0 if detection is successful, -ENODEV otherwise */
static int lm80_detect(struct i2c_client *client, struct i2c_board_info *info)
@@ -541,14 +536,14 @@ static int lm80_detect(struct i2c_client *client, struct i2c_board_info *info)
static int lm80_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
+ struct device *hwmon_dev;
struct lm80_data *data;
- int err;
data = devm_kzalloc(&client->dev, sizeof(struct lm80_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
- i2c_set_clientdata(client, data);
+ data->client = client;
mutex_init(&data->update_lock);
/* Initialize the LM80 chip */
@@ -558,30 +553,11 @@ static int lm80_probe(struct i2c_client *client,
data->fan_min[0] = lm80_read_value(client, LM80_REG_FAN_MIN(1));
data->fan_min[1] = lm80_read_value(client, LM80_REG_FAN_MIN(2));
- /* Register sysfs hooks */
- err = sysfs_create_group(&client->dev.kobj, &lm80_group);
- if (err)
- return err;
-
- data->hwmon_dev = hwmon_device_register(&client->dev);
- if (IS_ERR(data->hwmon_dev)) {
- err = PTR_ERR(data->hwmon_dev);
- goto error_remove;
- }
-
- return 0;
-
-error_remove:
- sysfs_remove_group(&client->dev.kobj, &lm80_group);
- return err;
-}
-
-static int lm80_remove(struct i2c_client *client)
-{
- struct lm80_data *data = i2c_get_clientdata(client);
-
- hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &lm80_group);
+ hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
+ client->name, data,
+ lm80_groups);
+ if (IS_ERR(hwmon_dev))
+ return PTR_ERR(hwmon_dev);
return 0;
}
@@ -614,8 +590,8 @@ static void lm80_init_client(struct i2c_client *client)
static struct lm80_data *lm80_update_device(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm80_data *data = i2c_get_clientdata(client);
+ struct lm80_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
int i;
int rv;
int prev_rv;
--
1.7.9.7
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