Merge tag 'pm-5.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more power management updates from Rafael Wysocki:
 "These are mostly fixes and cleanups on top of the previously merged
  power management material for 5.1-rc1 with one cpupower utility update
  that wasn't pushed earlier due to unfortunate timing.

  Specifics:

   - Fix registration of new cpuidle governors partially broken during
     the 5.0 development cycle by mistake (Rafael Wysocki).

   - Avoid integer overflows in the menu cpuidle governor by making it
     discard the overflowing data points upfront (Rafael Wysocki).

   - Fix minor mistake in the recent update of the iowait boost
     computation in the intel_pstate driver (Rafael Wysocki).

   - Drop incorrect __init annotation from one function in the pxa2xx
     cpufreq driver (Arnd Bergmann).

   - Fix the operating performance points (OPP) framework initialization
     for devices in multiple power domains if only one of them is
     scalable (Rajendra Nayak).

   - Fix mistake in dev_pm_opp_set_rate() which causes it to skip
     updating the performance state if the new frequency is the same as
     the old one (Viresh Kumar).

   - Rework the cancellation of wakeup source timers to avoid potential
     issues with it and do some cleanups unlocked by that change (Viresh
     Kumar, Rafael Wysocki).

   - Clean up the code computing the active/suspended time of devices in
     the PM-runtime framework after recent changes (Ulf Hansson).

   - Make the power management infrastructure code use pr_fmt()
     consistently (Joe Perches).

   - Clean up the generic power domains (genpd) framework somewhat
     (Aisheng Dong).

   - Improve kerneldoc comments for two functions in the cpufreq core
     (Rafael Wysocki).

   - Fix typo in a PM QoS file description comment (Aisheng Dong).

   - Update the handling of CPU boost frequencies in the cpupower
     utility (Abhishek Goel)"

* tag 'pm-5.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpuidle: governor: Add new governors to cpuidle_governors again
  cpufreq: intel_pstate: Fix up iowait_boost computation
  PM / OPP: Update performance state when freq == old_freq
  PM / wakeup: Drop wakeup_source_drop()
  PM / wakeup: Rework wakeup source timer cancellation
  PM / domains: Remove one unnecessary blank line
  PM / Domains: Return early for all errors in _genpd_power_off()
  PM / Domains: Improve warn for multiple states but no governor
  OPP: Fix handling of multiple power domains
  PM / QoS: Fix typo in file description
  cpufreq: pxa2xx: remove incorrect __init annotation
  PM-runtime: Call pm_runtime_active|suspended_time() from sysfs
  PM-runtime: Consolidate code to get active/suspended time
  PM: Add and use pr_fmt()
  cpufreq: Improve kerneldoc comments for cpufreq_cpu_get/put()
  cpuidle: menu: Avoid overflows when computing variance
  tools/power/cpupower: Display boost frequency separately

drivers/base/power/main.c

@@ -17,6 +17,8 @@
  * subsystem list maintains.
  */
 
+#define pr_fmt(fmt) "PM: " fmt
+
 #include <linux/device.h>
 #include <linux/export.h>
 #include <linux/mutex.h>
@@ -128,7 +130,7 @@ void device_pm_add(struct device *dev)
 	if (device_pm_not_required(dev))
 		return;
 
-	pr_debug("PM: Adding info for %s:%s\n",
+	pr_debug("Adding info for %s:%s\n",
 		 dev->bus ? dev->bus->name : "No Bus", dev_name(dev));
 	device_pm_check_callbacks(dev);
 	mutex_lock(&dpm_list_mtx);
@@ -149,7 +151,7 @@ void device_pm_remove(struct device *dev)
 	if (device_pm_not_required(dev))
 		return;
 
-	pr_debug("PM: Removing info for %s:%s\n",
+	pr_debug("Removing info for %s:%s\n",
 		 dev->bus ? dev->bus->name : "No Bus", dev_name(dev));
 	complete_all(&dev->power.completion);
 	mutex_lock(&dpm_list_mtx);
@@ -168,7 +170,7 @@ void device_pm_remove(struct device *dev)
  */
 void device_pm_move_before(struct device *deva, struct device *devb)
 {
-	pr_debug("PM: Moving %s:%s before %s:%s\n",
+	pr_debug("Moving %s:%s before %s:%s\n",
 		 deva->bus ? deva->bus->name : "No Bus", dev_name(deva),
 		 devb->bus ? devb->bus->name : "No Bus", dev_name(devb));
 	/* Delete deva from dpm_list and reinsert before devb. */
@@ -182,7 +184,7 @@ void device_pm_move_before(struct device *deva, struct device *devb)
  */
 void device_pm_move_after(struct device *deva, struct device *devb)
 {
-	pr_debug("PM: Moving %s:%s after %s:%s\n",
+	pr_debug("Moving %s:%s after %s:%s\n",
 		 deva->bus ? deva->bus->name : "No Bus", dev_name(deva),
 		 devb->bus ? devb->bus->name : "No Bus", dev_name(devb));
 	/* Delete deva from dpm_list and reinsert after devb. */
@@ -195,7 +197,7 @@ void device_pm_move_after(struct device *deva, struct device *devb)
  */
 void device_pm_move_last(struct device *dev)
 {
-	pr_debug("PM: Moving %s:%s to end of list\n",
+	pr_debug("Moving %s:%s to end of list\n",
 		 dev->bus ? dev->bus->name : "No Bus", dev_name(dev));
 	list_move_tail(&dev->power.entry, &dpm_list);
 }
@@ -418,8 +420,8 @@ static void pm_dev_dbg(struct device *dev, pm_message_t state, const char *info)
 static void pm_dev_err(struct device *dev, pm_message_t state, const char *info,
 			int error)
 {
-	printk(KERN_ERR "PM: Device %s failed to %s%s: error %d\n",
-		dev_name(dev), pm_verb(state.event), info, error);
+	pr_err("Device %s failed to %s%s: error %d\n",
+	       dev_name(dev), pm_verb(state.event), info, error);
 }
 
 static void dpm_show_time(ktime_t starttime, pm_message_t state, int error,
@@ -2022,8 +2024,7 @@ int dpm_prepare(pm_message_t state)
 				error = 0;
 				continue;
 			}
-			printk(KERN_INFO "PM: Device %s not prepared "
-				"for power transition: code %d\n",
+			pr_info("Device %s not prepared for power transition: code %d\n",
 				dev_name(dev), error);
 			put_device(dev);
 			break;
@@ -2062,7 +2063,7 @@ EXPORT_SYMBOL_GPL(dpm_suspend_start);
 void __suspend_report_result(const char *function, void *fn, int ret)
 {
 	if (ret)
-		printk(KERN_ERR "%s(): %pF returns %d\n", function, fn, ret);
+		pr_err("%s(): %pF returns %d\n", function, fn, ret);
 }
 EXPORT_SYMBOL_GPL(__suspend_report_result);