[PATCH v2 10/11] thermal: core: Separate thermal zone governor initialization

["Rafael J. Wysocki" <rjw@rjwysocki.net>]

From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

In preparation for a subsequent change that will switch over the thermal
core to using a mutex guard for managing thermal_governor_lock, move
the code running in thermal_zone_device_register_with_trips() under that
lock into a separate function called thermal_zone_init_governor().

While at it, drop a useless comment.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

This is a resend of

https://lore.kernel.org/linux-pm/2495577.jE0xQCEvom@rjwysocki.net/

---
 drivers/thermal/thermal_core.c |   36 +++++++++++++++++++++---------------
 1 file changed, 21 insertions(+), 15 deletions(-)

Index: linux-pm/drivers/thermal/thermal_core.c
===================================================================
--- linux-pm.orig/drivers/thermal/thermal_core.c
+++ linux-pm/drivers/thermal/thermal_core.c
@@ -1343,6 +1343,25 @@ int thermal_zone_get_crit_temp(struct th
 }
 EXPORT_SYMBOL_GPL(thermal_zone_get_crit_temp);
 
+static int thermal_zone_init_governor(struct thermal_zone_device *tz)
+{
+	struct thermal_governor *governor;
+	int ret;
+
+	mutex_lock(&thermal_governor_lock);
+
+	if (tz->tzp)
+		governor = __find_governor(tz->tzp->governor_name);
+	else
+		governor = def_governor;
+
+	ret = thermal_set_governor(tz, governor);
+
+	mutex_unlock(&thermal_governor_lock);
+
+	return ret;
+}
+
 static void thermal_zone_init_complete(struct thermal_zone_device *tz)
 {
 	struct thermal_cooling_device *cdev;
@@ -1407,7 +1426,6 @@ thermal_zone_device_register_with_trips(
 	struct thermal_trip_desc *td;
 	int id;
 	int result;
-	struct thermal_governor *governor;
 
 	if (!type || strlen(type) == 0) {
 		pr_err("No thermal zone type defined\n");
@@ -1505,21 +1523,9 @@ thermal_zone_device_register_with_trips(
 	if (result)
 		goto release_device;
 
-	/* Update 'this' zone's governor information */
-	mutex_lock(&thermal_governor_lock);
-
-	if (tz->tzp)
-		governor = __find_governor(tz->tzp->governor_name);
-	else
-		governor = def_governor;
-
-	result = thermal_set_governor(tz, governor);
-	if (result) {
-		mutex_unlock(&thermal_governor_lock);
+	result = thermal_zone_init_governor(tz);
+	if (result)
 		goto unregister;
-	}
-
-	mutex_unlock(&thermal_governor_lock);
 
 	if (!tz->tzp || !tz->tzp->no_hwmon) {
 		result = thermal_add_hwmon_sysfs(tz);