Merge tag 'v3.17-rockchip-rk3288' of git://git.kernel.org/pub/scm/linux/kernel/git...

[firefly-linux-kernel-4.4.55.git] / drivers / thermal / thermal_hwmon.c

diff --git a/drivers/thermal/thermal_hwmon.c b/drivers/thermal/thermal_hwmon.c
index fdb07199d9c2693b8ae91af6d626f588ed21350b..1967bee4f07686de6c091e28797ea27039c2996b 100644 (file)
--- a/drivers/thermal/thermal_hwmon.c
+++ b/drivers/thermal/thermal_hwmon.c
@@ -140,6 +140,12 @@ thermal_hwmon_lookup_temp(const struct thermal_hwmon_device *hwmon,
        return NULL;
 }
 
+static bool thermal_zone_crit_temp_valid(struct thermal_zone_device *tz)
+{
+       unsigned long temp;
+       return tz->ops->get_crit_temp && !tz->ops->get_crit_temp(tz, &temp);
+}
+
 int thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
 {
        struct thermal_hwmon_device *hwmon;
@@ -189,21 +195,18 @@ int thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
        if (result)
                goto free_temp_mem;
 
-       if (tz->ops->get_crit_temp) {
-               unsigned long temperature;
-               if (!tz->ops->get_crit_temp(tz, &temperature)) {
-                       snprintf(temp->temp_crit.name,
-                                sizeof(temp->temp_crit.name),
+       if (thermal_zone_crit_temp_valid(tz)) {
+               snprintf(temp->temp_crit.name,
+                               sizeof(temp->temp_crit.name),
                                "temp%d_crit", hwmon->count);
-                       temp->temp_crit.attr.attr.name = temp->temp_crit.name;
-                       temp->temp_crit.attr.attr.mode = 0444;
-                       temp->temp_crit.attr.show = temp_crit_show;
-                       sysfs_attr_init(&temp->temp_crit.attr.attr);
-                       result = device_create_file(hwmon->device,
-                                                   &temp->temp_crit.attr);
-                       if (result)
-                               goto unregister_input;
-               }
+               temp->temp_crit.attr.attr.name = temp->temp_crit.name;
+               temp->temp_crit.attr.attr.mode = 0444;
+               temp->temp_crit.attr.show = temp_crit_show;
+               sysfs_attr_init(&temp->temp_crit.attr.attr);
+               result = device_create_file(hwmon->device,
+                                           &temp->temp_crit.attr);
+               if (result)
+                       goto unregister_input;
        }
 
        mutex_lock(&thermal_hwmon_list_lock);
@@ -250,7 +253,7 @@ void thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
        }
 
        device_remove_file(hwmon->device, &temp->temp_input.attr);
-       if (tz->ops->get_crit_temp)
+       if (thermal_zone_crit_temp_valid(tz))
                device_remove_file(hwmon->device, &temp->temp_crit.attr);
 
        mutex_lock(&thermal_hwmon_list_lock);