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asus-wmi: Convert to use devm_hwmon_device_register_with_groups

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Simplify the code and avoid race conditions due to late sysfs attribute
registration. Also replace SENSOR_DEVICE_ATTR with DEVICE_ATTR;
the additional parameter is not used and thus unnecessary.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
This commit is contained in:
Guenter Roeck 2013-11-23 11:03:17 -08:00 committed by Matthew Garrett
parent c2be45f09b
commit 50a639fb15
1 changed files with 11 additions and 37 deletions
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48
drivers/platform/x86/asus-wmi.c
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@ -184,7 +184,6 @@ struct asus_wmi {
struct input_dev *inputdev;
struct backlight_device *backlight_device;
struct device *hwmon_device;
struct platform_device *platform_device;
struct led_classdev wlan_led;
@ -1071,20 +1070,12 @@ static ssize_t asus_hwmon_temp1(struct device *dev,
return sprintf(buf, "%d\n", value);
}
static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL, 0);
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL, 0);
static ssize_t
show_name(struct device *dev, struct device_attribute *attr, char *buf)
{
return sprintf(buf, "asus\n");
}
static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
static DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL);
static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
static struct attribute *hwmon_attributes[] = {
&sensor_dev_attr_pwm1.dev_attr.attr,
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_name.dev_attr.attr,
&dev_attr_pwm1.attr,
&dev_attr_temp1_input.attr,
NULL
};
@ -1098,9 +1089,9 @@ static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
int dev_id = -1;
u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
if (attr == &sensor_dev_attr_pwm1.dev_attr.attr)
if (attr == &dev_attr_pwm1.attr)
dev_id = ASUS_WMI_DEVID_FAN_CTRL;
else if (attr == &sensor_dev_attr_temp1_input.dev_attr.attr)
else if (attr == &dev_attr_temp1_input.attr)
dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
if (dev_id != -1) {
@ -1135,35 +1126,20 @@ static struct attribute_group hwmon_attribute_group = {
.is_visible = asus_hwmon_sysfs_is_visible,
.attrs = hwmon_attributes
};
static void asus_wmi_hwmon_exit(struct asus_wmi *asus)
{
struct device *hwmon;
hwmon = asus->hwmon_device;
if (!hwmon)
return;
sysfs_remove_group(&hwmon->kobj, &hwmon_attribute_group);
hwmon_device_unregister(hwmon);
asus->hwmon_device = NULL;
}
__ATTRIBUTE_GROUPS(hwmon_attribute);
static int asus_wmi_hwmon_init(struct asus_wmi *asus)
{
struct device *hwmon;
int result;
hwmon = hwmon_device_register(&asus->platform_device->dev);
hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
"asus", asus,
hwmon_attribute_groups);
if (IS_ERR(hwmon)) {
pr_err("Could not register asus hwmon device\n");
return PTR_ERR(hwmon);
}
dev_set_drvdata(hwmon, asus);
asus->hwmon_device = hwmon;
result = sysfs_create_group(&hwmon->kobj, &hwmon_attribute_group);
if (result)
asus_wmi_hwmon_exit(asus);
return result;
return 0;
}
/*
@ -1834,7 +1810,6 @@ fail_backlight:
fail_rfkill:
asus_wmi_led_exit(asus);
fail_leds:
asus_wmi_hwmon_exit(asus);
fail_hwmon:
asus_wmi_input_exit(asus);
fail_input:
@ -1852,7 +1827,6 @@ static int asus_wmi_remove(struct platform_device *device)
wmi_remove_notify_handler(asus->driver->event_guid);
asus_wmi_backlight_exit(asus);
asus_wmi_input_exit(asus);
asus_wmi_hwmon_exit(asus);
asus_wmi_led_exit(asus);
asus_wmi_rfkill_exit(asus);
asus_wmi_debugfs_exit(asus);