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hwmon: (emc2103) use permission-specific DEVICE_ATTR variants 

Use DEVICE_ATTR_RO for read only attributes and DEVICE_ATTR_RW for
read/write attributes. This simplifies the source code, improves
readbility, and reduces the chance of inconsistencies.

The conversion was done automatically using coccinelle. It was validated
by compiling both the old and the new source code and comparing its text,
data, and bss size.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
[groeck: Updated description]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Julia Lawall 2016-12-22 13:05:30 +01:00 коммит произвёл Guenter Roeck
Родитель 14c05198bc
Коммит 4cd0183dcf
1 изменённых файлов: 18 добавлений и 18 удалений
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34
drivers/hwmon/emc2103.c
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@ -284,7 +284,7 @@ static ssize_t set_temp_max(struct device *dev, struct device_attribute *da,
} }
static ssize_t static ssize_t
show_fan(struct device *dev, struct device_attribute *da, char *buf) fan1_input_show(struct device *dev, struct device_attribute *da, char *buf)
{ {
struct emc2103_data *data = emc2103_update_device(dev); struct emc2103_data *data = emc2103_update_device(dev);
int rpm = 0; int rpm = 0;
@ -294,7 +294,7 @@ show_fan(struct device *dev, struct device_attribute *da, char *buf)
} }
static ssize_t static ssize_t
show_fan_div(struct device *dev, struct device_attribute *da, char *buf) fan1_div_show(struct device *dev, struct device_attribute *da, char *buf)
{ {
struct emc2103_data *data = emc2103_update_device(dev); struct emc2103_data *data = emc2103_update_device(dev);
int fan_div = 8 / data->fan_multiplier; int fan_div = 8 / data->fan_multiplier;
@ -307,7 +307,7 @@ show_fan_div(struct device *dev, struct device_attribute *da, char *buf)
* of least surprise; the user doesn't expect the fan target to change just * of least surprise; the user doesn't expect the fan target to change just
* because the divider changed. * because the divider changed.
*/ */
static ssize_t set_fan_div(struct device *dev, struct device_attribute *da, static ssize_t fan1_div_store(struct device *dev, struct device_attribute *da,
const char *buf, size_t count) const char *buf, size_t count)
{ {
struct emc2103_data *data = emc2103_update_device(dev); struct emc2103_data *data = emc2103_update_device(dev);
@ -369,7 +369,7 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *da,
} }
static ssize_t static ssize_t
show_fan_target(struct device *dev, struct device_attribute *da, char *buf) fan1_target_show(struct device *dev, struct device_attribute *da, char *buf)
{ {
struct emc2103_data *data = emc2103_update_device(dev); struct emc2103_data *data = emc2103_update_device(dev);
int rpm = 0; int rpm = 0;
@ -382,8 +382,9 @@ show_fan_target(struct device *dev, struct device_attribute *da, char *buf)
return sprintf(buf, "%d\n", rpm); return sprintf(buf, "%d\n", rpm);
} }
static ssize_t set_fan_target(struct device *dev, struct device_attribute *da, static ssize_t fan1_target_store(struct device *dev,
const char *buf, size_t count) struct device_attribute *da, const char *buf,
size_t count)
{ {
struct emc2103_data *data = emc2103_update_device(dev); struct emc2103_data *data = emc2103_update_device(dev);
struct i2c_client *client = data->client; struct i2c_client *client = data->client;
@ -412,7 +413,7 @@ static ssize_t set_fan_target(struct device *dev, struct device_attribute *da,
} }
static ssize_t static ssize_t
show_fan_fault(struct device *dev, struct device_attribute *da, char *buf) fan1_fault_show(struct device *dev, struct device_attribute *da, char *buf)
{ {
struct emc2103_data *data = emc2103_update_device(dev); struct emc2103_data *data = emc2103_update_device(dev);
bool fault = ((data->fan_tach & 0x1fe0) == 0x1fe0); bool fault = ((data->fan_tach & 0x1fe0) == 0x1fe0);
@ -420,14 +421,15 @@ show_fan_fault(struct device *dev, struct device_attribute *da, char *buf)
} }
static ssize_t static ssize_t
show_pwm_enable(struct device *dev, struct device_attribute *da, char *buf) pwm1_enable_show(struct device *dev, struct device_attribute *da, char *buf)
{ {
struct emc2103_data *data = emc2103_update_device(dev); struct emc2103_data *data = emc2103_update_device(dev);
return sprintf(buf, "%d\n", data->fan_rpm_control ? 3 : 0); return sprintf(buf, "%d\n", data->fan_rpm_control ? 3 : 0);
} }
static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *da, static ssize_t pwm1_enable_store(struct device *dev,
const char *buf, size_t count) struct device_attribute *da, const char *buf,
size_t count)
{ {
struct emc2103_data *data = dev_get_drvdata(dev); struct emc2103_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client; struct i2c_client *client = data->client;
@ -512,14 +514,12 @@ static SENSOR_DEVICE_ATTR(temp4_min_alarm, S_IRUGO, show_temp_min_alarm,
static SENSOR_DEVICE_ATTR(temp4_max_alarm, S_IRUGO, show_temp_max_alarm, static SENSOR_DEVICE_ATTR(temp4_max_alarm, S_IRUGO, show_temp_max_alarm,
NULL, 3); NULL, 3);
static DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL); static DEVICE_ATTR_RO(fan1_input);
static DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div, set_fan_div); static DEVICE_ATTR_RW(fan1_div);
static DEVICE_ATTR(fan1_target, S_IRUGO | S_IWUSR, show_fan_target, static DEVICE_ATTR_RW(fan1_target);
set_fan_target); static DEVICE_ATTR_RO(fan1_fault);
static DEVICE_ATTR(fan1_fault, S_IRUGO, show_fan_fault, NULL);
static DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, show_pwm_enable, static DEVICE_ATTR_RW(pwm1_enable);
set_pwm_enable);
/* sensors present on all models */ /* sensors present on all models */
static struct attribute *emc2103_attributes[] = { static struct attribute *emc2103_attributes[] = {