leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

hwmon: (ads1015) Drop dynamic attribute group

Browse Source 
It is cheaper to handle attributes individually.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Dirk Eibach <eibach@gdsys.de>
This commit is contained in:
Jean Delvare 2011-03-21 17:59:37 +01:00 committed by Jean Delvare
parent 8c22a8f575
commit fdf241a8ed
1 changed files with 18 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
drivers/hwmon/ads1015.c
View File

@ -51,8 +51,6 @@ static const unsigned int fullscale_table[8] = {
struct ads1015_data {
struct device *hwmon_dev;
struct mutex update_lock; /* mutex protect updates */
struct attribute *attr_table[ADS1015_CONFIG_CHANNELS + 1];
struct attribute_group attr_group;
};
static s32 ads1015_read_reg(struct i2c_client *client, unsigned int reg)
@ -141,28 +139,15 @@ static ssize_t show_in(struct device *dev, struct device_attribute *da,
return (res < 0) ? res : sprintf(buf, "%d\n", in);
}
#define in_reg(offset)\
static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in,\
NULL, offset)
in_reg(0);
in_reg(1);
in_reg(2);
in_reg(3);
in_reg(4);
in_reg(5);
in_reg(6);
in_reg(7);
static struct attribute *all_attributes[] = {
&sensor_dev_attr_in0_input.dev_attr.attr,
&sensor_dev_attr_in1_input.dev_attr.attr,
&sensor_dev_attr_in2_input.dev_attr.attr,
&sensor_dev_attr_in3_input.dev_attr.attr,
&sensor_dev_attr_in4_input.dev_attr.attr,
&sensor_dev_attr_in5_input.dev_attr.attr,
&sensor_dev_attr_in6_input.dev_attr.attr,
&sensor_dev_attr_in7_input.dev_attr.attr,
static const struct sensor_device_attribute ads1015_in[] = {
SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
};
/*
@ -172,8 +157,11 @@ static struct attribute *all_attributes[] = {
static int ads1015_remove(struct i2c_client *client)
{
struct ads1015_data *data = i2c_get_clientdata(client);
int k;
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &data->attr_group);
for (k = 0; k < ADS1015_CONFIG_CHANNELS; ++k)
device_remove_file(&client->dev, &ads1015_in[k].dev_attr);
kfree(data);
return 0;
}
@ -210,7 +198,6 @@ static int ads1015_probe(struct i2c_client *client,
int err;
unsigned int exported_channels;
unsigned int k;
unsigned int n = 0;
data = kzalloc(sizeof(struct ads1015_data), GFP_KERNEL);
if (!data) {
@ -222,16 +209,14 @@ static int ads1015_probe(struct i2c_client *client,
mutex_init(&data->update_lock);
/* build sysfs attribute group */
data->attr_group.attrs = data->attr_table;
exported_channels = ads1015_get_exported_channels(client);
for (k = 0; k < ADS1015_CONFIG_CHANNELS; ++k) {
if (!(exported_channels & (1<<k)))
continue;
data->attr_table[n++] = all_attributes[k];
err = device_create_file(&client->dev, &ads1015_in[k].dev_attr);
if (err)
goto exit_free;
}
err = sysfs_create_group(&client->dev.kobj, &data->attr_group);
if (err)
goto exit_free;
data->hwmon_dev = hwmon_device_register(&client->dev);
if (IS_ERR(data->hwmon_dev)) {
@ -242,7 +227,8 @@ static int ads1015_probe(struct i2c_client *client,
return 0;
exit_remove:
sysfs_remove_group(&client->dev.kobj, &data->attr_group);
for (k = 0; k < ADS1015_CONFIG_CHANNELS; ++k)
device_remove_file(&client->dev, &ads1015_in[k].dev_attr);
exit_free:
kfree(data);
exit: