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Date: Sun, 17 Mar 2013 18:45:55 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: lm-sensors@...sensors.org, linux-kernel@...r.kernel.org
Cc: Jean Delvare <khali@...ux-fr.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Guenter Roeck <linux@...ck-us.net>
Subject: [RFC PATCH 6/8] hwmon: (lm90) Convert to devm_hwmon_device_register API
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
drivers/hwmon/lm90.c | 106 ++++++++++++++++++++++----------------------------
1 file changed, 46 insertions(+), 60 deletions(-)
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 8eeb141..a35fa47 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -306,6 +306,7 @@ struct lm90_data {
unsigned long last_updated; /* in jiffies */
int kind;
u32 flags;
+ const struct attribute_group *groups[7];
int update_interval; /* in milliseconds */
@@ -464,7 +465,7 @@ static void lm90_set_convrate(struct i2c_client *client, struct lm90_data *data,
static struct lm90_data *lm90_update_device(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = to_i2c_client(dev->parent);
struct lm90_data *data = i2c_get_clientdata(client);
unsigned long next_update;
@@ -738,7 +739,7 @@ static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
};
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = to_i2c_client(dev->parent);
struct lm90_data *data = i2c_get_clientdata(client);
int nr = attr->index;
long val;
@@ -805,7 +806,7 @@ static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
};
struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = to_i2c_client(dev->parent);
struct lm90_data *data = i2c_get_clientdata(client);
int nr = attr->nr;
int index = attr->index;
@@ -867,7 +868,7 @@ static ssize_t show_temphyst(struct device *dev,
static ssize_t set_temphyst(struct device *dev, struct device_attribute *dummy,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = to_i2c_client(dev->parent);
struct lm90_data *data = i2c_get_clientdata(client);
long val;
int err;
@@ -921,7 +922,7 @@ static ssize_t set_update_interval(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = to_i2c_client(dev->parent);
struct lm90_data *data = i2c_get_clientdata(client);
unsigned long val;
int err;
@@ -971,6 +972,15 @@ static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
static DEVICE_ATTR(update_interval, S_IRUGO | S_IWUSR, show_update_interval,
set_update_interval);
+static struct attribute *temp2_attributes[] = {
+ &sensor_dev_attr_temp2_offset.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group temp2_group = {
+ .attrs = temp2_attributes,
+};
+
static struct attribute *lm90_attributes[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
@@ -1083,14 +1093,14 @@ static const struct attribute_group lm90_temp3_group = {
static ssize_t show_pec(struct device *dev, struct device_attribute *dummy,
char *buf)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = to_i2c_client(dev->parent);
return sprintf(buf, "%d\n", !!(client->flags & I2C_CLIENT_PEC));
}
static ssize_t set_pec(struct device *dev, struct device_attribute *dummy,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = to_i2c_client(dev->parent);
long val;
int err;
@@ -1114,6 +1124,15 @@ static ssize_t set_pec(struct device *dev, struct device_attribute *dummy,
static DEVICE_ATTR(pec, S_IWUSR | S_IRUGO, show_pec, set_pec);
+static struct attribute *pec_attributes[] = {
+ &dev_attr_pec.attr,
+ NULL
+};
+
+static const struct attribute_group pec_group = {
+ .attrs = pec_attributes,
+};
+
/*
* Real code
*/
@@ -1320,22 +1339,6 @@ static int lm90_detect(struct i2c_client *client,
return 0;
}
-static void lm90_remove_files(struct i2c_client *client, struct lm90_data *data)
-{
- struct device *dev = &client->dev;
-
- if (data->flags & LM90_HAVE_TEMP3)
- sysfs_remove_group(&dev->kobj, &lm90_temp3_group);
- if (data->flags & LM90_HAVE_EMERGENCY_ALARM)
- sysfs_remove_group(&dev->kobj, &lm90_emergency_alarm_group);
- if (data->flags & LM90_HAVE_EMERGENCY)
- sysfs_remove_group(&dev->kobj, &lm90_emergency_group);
- if (data->flags & LM90_HAVE_OFFSET)
- device_remove_file(dev, &sensor_dev_attr_temp2_offset.dev_attr);
- device_remove_file(dev, &dev_attr_pec);
- sysfs_remove_group(&dev->kobj, &lm90_group);
-}
-
static void lm90_restore_conf(struct i2c_client *client, struct lm90_data *data)
{
/* Restore initial configuration */
@@ -1397,7 +1400,7 @@ static int lm90_probe(struct i2c_client *client,
struct device *dev = &client->dev;
struct i2c_adapter *adapter = to_i2c_adapter(dev->parent);
struct lm90_data *data;
- int err;
+ int err, group = 0;
data = devm_kzalloc(&client->dev, sizeof(struct lm90_data), GFP_KERNEL);
if (!data)
@@ -1430,47 +1433,32 @@ static int lm90_probe(struct i2c_client *client,
lm90_init_client(client);
/* Register sysfs hooks */
- err = sysfs_create_group(&dev->kobj, &lm90_group);
- if (err)
- goto exit_restore;
- if (client->flags & I2C_CLIENT_PEC) {
- err = device_create_file(dev, &dev_attr_pec);
- if (err)
- goto exit_remove_files;
- }
- if (data->flags & LM90_HAVE_OFFSET) {
- err = device_create_file(dev,
- &sensor_dev_attr_temp2_offset.dev_attr);
- if (err)
- goto exit_remove_files;
- }
- if (data->flags & LM90_HAVE_EMERGENCY) {
- err = sysfs_create_group(&dev->kobj, &lm90_emergency_group);
- if (err)
- goto exit_remove_files;
- }
- if (data->flags & LM90_HAVE_EMERGENCY_ALARM) {
- err = sysfs_create_group(&dev->kobj,
- &lm90_emergency_alarm_group);
- if (err)
- goto exit_remove_files;
- }
- if (data->flags & LM90_HAVE_TEMP3) {
- err = sysfs_create_group(&dev->kobj, &lm90_temp3_group);
- if (err)
- goto exit_remove_files;
- }
+ data->groups[group++] = &lm90_group;
- data->hwmon_dev = hwmon_device_register(dev);
+ if (client->flags & I2C_CLIENT_PEC)
+ data->groups[group++] = &pec_group;
+
+ if (data->flags & LM90_HAVE_OFFSET)
+ data->groups[group++] = &temp2_group;
+
+ if (data->flags & LM90_HAVE_EMERGENCY)
+ data->groups[group++] = &lm90_emergency_group;
+
+ if (data->flags & LM90_HAVE_EMERGENCY_ALARM)
+ data->groups[group++] = &lm90_emergency_alarm_group;
+
+ if (data->flags & LM90_HAVE_TEMP3)
+ data->groups[group++] = &lm90_temp3_group;
+
+ data->hwmon_dev = devm_hwmon_device_register(dev, data->groups,
+ id->name);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
- goto exit_remove_files;
+ goto exit_restore;
}
return 0;
-exit_remove_files:
- lm90_remove_files(client, data);
exit_restore:
lm90_restore_conf(client, data);
return err;
@@ -1480,8 +1468,6 @@ static int lm90_remove(struct i2c_client *client)
{
struct lm90_data *data = i2c_get_clientdata(client);
- hwmon_device_unregister(data->hwmon_dev);
- lm90_remove_files(client, data);
lm90_restore_conf(client, data);
return 0;
--
1.7.9.7
--
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