Merge tag 'pm-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "These include two new drivers (cpufreq driver for Apple SoC CPU
  P-states and the SCMI Powercap based power capping driver), other new
  hardware support and driver extensions (Qualcomm cpufreq driver and
  its DT bindings, TI cpufreq driver, intel_pstate, intel-uncore-freq),
  a bunch of fixes and cleanups all over and a cpupower utility update
  including new features related to RAPL support.

  Specifics:

   - Fix nasty and hard to debug race condition introduced by mistake in
     the runtime PM core code and clean up that code somewhat on top of
     the fix (Rafael Wysocki)

   - Generalize of_perf_domain_get_sharing_cpumask phandle format
     (Hector Martin)

   - Add new cpufreq driver for Apple SoC CPU P-states (Hector Martin)

   - Update Qualcomm cpufreq driver (Manivannan Sadhasivam, Chen Hui):
      - CPU clock provider support
      - Generic cleanups or reorganization
      - Potential memleak fix
      - Fix of the return value of cpufreq_driver->get()

   - Update Qualcomm cpufreq driver's DT bindings (Manivannan
     Sadhasivam, Rob Herring, Melody Olvera):
      - Support for CPU clock provider
      - Missing cache-related properties fixes
      - Support for QDU1000/QRU1000

   - Add support for ti,am625 SoC and enable build of ti-cpufreq for
     ARCH_K3 (Dave Gerlach, and Vibhore Vardhan)

   - Use flexible array to simplify memory allocation in the tegra186
     cpufreq driver (Christophe JAILLET)

   - Convert cpufreq statistics code to use sysfs_emit_at() (ye
     xingchen)

   - Allow intel_pstate to use no-HWP mode on Sapphire Rapids (Giovanni
     Gherdovich)

   - Add missing pci_dev_put() to the amd_freq_sensitivity cpufreq
     driver (Xiongfeng Wang)

   - Initialize the kobj_unregister completion before calling
     kobject_init_and_add() in the cpufreq core code (Yongqiang Liu)

   - Defer setting boost MSRs in the ACPI cpufreq driver (Stuart Hayes,
     Nathan Chancellor)

   - Make intel_pstate accept initial EPP value of 0x80 (Srinivas
     Pandruvada)

   - Make read-only array sys_clk_src in the SPEAr cpufreq driver static
     (Colin Ian King)

   - Make array speeds in the longhaul cpufreq driver static (Colin Ian
     King)

   - Use str_enabled_disabled() helper in the ACPI cpufreq driver (Andy
     Shevchenko)

   - Drop a reference to CVS from cpufreq documentation (Conghui Wang)

   - Improve kernel messages printed by the PSCI cpuidle driver (Ulf
     Hansson)

   - Make the DT cpuidle driver return the correct number of parsed idle
     states, clean it up and clarify a comment in it (Ulf Hansson)

   - Modify the tasks freezing code to avoid using pr_cont() and refine
     an error message printed by it (Rafael Wysocki)

   - Make the hibernation core code complain about memory map mismatches
     during resume to help diagnostics (Xueqin Luo)

   - Fix mistake in a kerneldoc comment in the hibernation code
     (xiongxin)

   - Reverse the order of performance and enabling operations in the
     generic power domains code (Abel Vesa)

   - Power off[on] domains in hibernate .freeze[thaw]_noirq hook of in
     the generic power domains code (Abel Vesa)

   - Consolidate genpd_restore_noirq() and genpd_resume_noirq() (Shawn
     Guo)

   - Pass generic PM noirq hooks to genpd_finish_suspend() (Shawn Guo)

   - Drop generic power domain status manipulation during hibernate
     restore (Shawn Guo)

   - Fix compiler warnings with make W=1 in the idle_inject power
     capping driver (Srinivas Pandruvada)

   - Use kstrtobool() instead of strtobool() in the power capping sysfs
     interface (Christophe JAILLET)

   - Add SCMI Powercap based power capping driver (Cristian Marussi)

   - Add Emerald Rapids support to the intel-uncore-freq driver (Artem
     Bityutskiy)

   - Repair slips in kernel-doc comments in the generic notifier code
     (Lukas Bulwahn)

   - Fix several DT issues in the OPP library reorganize code around
     opp-microvolt-<named> DT property (Viresh Kumar)

   - Allow any of opp-microvolt, opp-microamp, or opp-microwatt
     properties to be present without the others present (James
     Calligeros)

   - Fix clock-latency-ns property in DT example (Serge Semin)

   - Add a private governor_data for devfreq governors (Kant Fan)

   - Reorganize devfreq code to use device_match_of_node() and
     devm_platform_get_and_ioremap_resource() instead of open coding
     them (ye xingchen, Minghao Chi)

   - Make cpupower choose base_cpu to display default cpupower details
     instead of picking CPU 0 (Saket Kumar Bhaskar)

   - Add Georgian translation to cpupower documentation (Zurab
     Kargareteli)

   - Introduce powercap intel-rapl library, powercap-info command, and
     RAPL monitor into cpupower (Thomas Renninger)"

* tag 'pm-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (64 commits)
  PM: runtime: Adjust white space in the core code
  cpufreq: Remove CVS version control contents from documentation
  cpufreq: stats: Convert to use sysfs_emit_at() API
  cpufreq: ACPI: Only set boost MSRs on supported CPUs
  PM: sleep: Refine error message in try_to_freeze_tasks()
  PM: sleep: Avoid using pr_cont() in the tasks freezing code
  PM: runtime: Relocate rpm_callback() right after __rpm_callback()
  PM: runtime: Do not call __rpm_callback() from rpm_idle()
  PM / devfreq: event: use devm_platform_get_and_ioremap_resource()
  PM / devfreq: event: Use device_match_of_node()
  PM / devfreq: Use device_match_of_node()
  powercap: idle_inject: Fix warnings with make W=1
  PM: hibernate: Complain about memory map mismatches during resume
  dt-bindings: cpufreq: cpufreq-qcom-hw: Add QDU1000/QRU1000 cpufreq
  cpufreq: tegra186: Use flexible array to simplify memory allocation
  cpupower: rapl monitor - shows the used power consumption in uj for each rapl domain
  cpupower: Introduce powercap intel-rapl library and powercap-info command
  cpupower: Add Georgian translation
  cpufreq: intel_pstate: Add Sapphire Rapids support in no-HWP mode
  cpufreq: amd_freq_sensitivity: Add missing pci_dev_put()
  ...

1 files changed, 78 insertions, 67 deletions

diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index b52049098d4e..50e726b6c2cf 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -243,8 +243,7 @@ void pm_runtime_set_memalloc_noio(struct device *dev, bool enable)
 		 * flag was set by any one of the descendants.
 		 */
 		if (!dev || (!enable &&
-			     device_for_each_child(dev, NULL,
-						   dev_memalloc_noio)))
+		    device_for_each_child(dev, NULL, dev_memalloc_noio)))
 			break;
 	}
 	mutex_unlock(&dev_hotplug_mutex);
@@ -265,15 +264,13 @@ static int rpm_check_suspend_allowed(struct device *dev)
 		retval = -EACCES;
 	else if (atomic_read(&dev->power.usage_count))
 		retval = -EAGAIN;
-	else if (!dev->power.ignore_children &&
-			atomic_read(&dev->power.child_count))
+	else if (!dev->power.ignore_children && atomic_read(&dev->power.child_count))
 		retval = -EBUSY;
 
 	/* Pending resume requests take precedence over suspends. */
-	else if ((dev->power.deferred_resume
-			&& dev->power.runtime_status == RPM_SUSPENDING)
-	    || (dev->power.request_pending
-			&& dev->power.request == RPM_REQ_RESUME))
+	else if ((dev->power.deferred_resume &&
+	    dev->power.runtime_status == RPM_SUSPENDING) ||
+	    (dev->power.request_pending && dev->power.request == RPM_REQ_RESUME))
 		retval = -EAGAIN;
 	else if (__dev_pm_qos_resume_latency(dev) == 0)
 		retval = -EPERM;
@@ -404,9 +401,9 @@ static int __rpm_callback(int (*cb)(struct device *), struct device *dev)
 		 *
 		 * Do that if resume fails too.
 		 */
-		if (use_links
-		    && ((dev->power.runtime_status == RPM_SUSPENDING && !retval)
-		    || (dev->power.runtime_status == RPM_RESUMING && retval))) {
+		if (use_links &&
+		    ((dev->power.runtime_status == RPM_SUSPENDING && !retval) ||
+		    (dev->power.runtime_status == RPM_RESUMING && retval))) {
 			idx = device_links_read_lock();
 
 			__rpm_put_suppliers(dev, false);
@@ -422,6 +419,38 @@ fail:
 }
 
 /**
+ * rpm_callback - Run a given runtime PM callback for a given device.
+ * @cb: Runtime PM callback to run.
+ * @dev: Device to run the callback for.
+ */
+static int rpm_callback(int (*cb)(struct device *), struct device *dev)
+{
+	int retval;
+
+	if (dev->power.memalloc_noio) {
+		unsigned int noio_flag;
+
+		/*
+		 * Deadlock might be caused if memory allocation with
+		 * GFP_KERNEL happens inside runtime_suspend and
+		 * runtime_resume callbacks of one block device's
+		 * ancestor or the block device itself. Network
+		 * device might be thought as part of iSCSI block
+		 * device, so network device and its ancestor should
+		 * be marked as memalloc_noio too.
+		 */
+		noio_flag = memalloc_noio_save();
+		retval = __rpm_callback(cb, dev);
+		memalloc_noio_restore(noio_flag);
+	} else {
+		retval = __rpm_callback(cb, dev);
+	}
+
+	dev->power.runtime_error = retval;
+	return retval != -EACCES ? retval : -EIO;
+}
+
+/**
  * rpm_idle - Notify device bus type if the device can be suspended.
  * @dev: Device to notify the bus type about.
  * @rpmflags: Flag bits.
@@ -459,6 +488,7 @@ static int rpm_idle(struct device *dev, int rpmflags)
 	/* Act as though RPM_NOWAIT is always set. */
 	else if (dev->power.idle_notification)
 		retval = -EINPROGRESS;
+
 	if (retval)
 		goto out;
 
@@ -484,7 +514,17 @@ static int rpm_idle(struct device *dev, int rpmflags)
 
 	dev->power.idle_notification = true;
 
-	retval = __rpm_callback(callback, dev);
+	if (dev->power.irq_safe)
+		spin_unlock(&dev->power.lock);
+	else
+		spin_unlock_irq(&dev->power.lock);
+
+	retval = callback(dev);
+
+	if (dev->power.irq_safe)
+		spin_lock(&dev->power.lock);
+	else
+		spin_lock_irq(&dev->power.lock);
 
 	dev->power.idle_notification = false;
 	wake_up_all(&dev->power.wait_queue);
@@ -495,38 +535,6 @@ static int rpm_idle(struct device *dev, int rpmflags)
 }
 
 /**
- * rpm_callback - Run a given runtime PM callback for a given device.
- * @cb: Runtime PM callback to run.
- * @dev: Device to run the callback for.
- */
-static int rpm_callback(int (*cb)(struct device *), struct device *dev)
-{
-	int retval;
-
-	if (dev->power.memalloc_noio) {
-		unsigned int noio_flag;
-
-		/*
-		 * Deadlock might be caused if memory allocation with
-		 * GFP_KERNEL happens inside runtime_suspend and
-		 * runtime_resume callbacks of one block device's
-		 * ancestor or the block device itself. Network
-		 * device might be thought as part of iSCSI block
-		 * device, so network device and its ancestor should
-		 * be marked as memalloc_noio too.
-		 */
-		noio_flag = memalloc_noio_save();
-		retval = __rpm_callback(cb, dev);
-		memalloc_noio_restore(noio_flag);
-	} else {
-		retval = __rpm_callback(cb, dev);
-	}
-
-	dev->power.runtime_error = retval;
-	return retval != -EACCES ? retval : -EIO;
-}
-
-/**
  * rpm_suspend - Carry out runtime suspend of given device.
  * @dev: Device to suspend.
  * @rpmflags: Flag bits.
@@ -564,12 +572,12 @@ static int rpm_suspend(struct device *dev, int rpmflags)
 	/* Synchronous suspends are not allowed in the RPM_RESUMING state. */
 	if (dev->power.runtime_status == RPM_RESUMING && !(rpmflags & RPM_ASYNC))
 		retval = -EAGAIN;
+
 	if (retval)
 		goto out;
 
 	/* If the autosuspend_delay time hasn't expired yet, reschedule. */
-	if ((rpmflags & RPM_AUTO)
-	    && dev->power.runtime_status != RPM_SUSPENDING) {
+	if ((rpmflags & RPM_AUTO) && dev->power.runtime_status != RPM_SUSPENDING) {
 		u64 expires = pm_runtime_autosuspend_expiration(dev);
 
 		if (expires != 0) {
@@ -584,7 +592,7 @@ static int rpm_suspend(struct device *dev, int rpmflags)
 			 * rest.
 			 */
 			if (!(dev->power.timer_expires &&
-					dev->power.timer_expires <= expires)) {
+			    dev->power.timer_expires <= expires)) {
 				/*
 				 * We add a slack of 25% to gather wakeups
 				 * without sacrificing the granularity.
@@ -594,9 +602,9 @@ static int rpm_suspend(struct device *dev, int rpmflags)
 
 				dev->power.timer_expires = expires;
 				hrtimer_start_range_ns(&dev->power.suspend_timer,
-						ns_to_ktime(expires),
-						slack,
-						HRTIMER_MODE_ABS);
+						       ns_to_ktime(expires),
+						       slack,
+						       HRTIMER_MODE_ABS);
 			}
 			dev->power.timer_autosuspends = 1;
 			goto out;
@@ -787,8 +795,8 @@ static int rpm_resume(struct device *dev, int rpmflags)
 		goto out;
 	}
 
-	if (dev->power.runtime_status == RPM_RESUMING
-	    || dev->power.runtime_status == RPM_SUSPENDING) {
+	if (dev->power.runtime_status == RPM_RESUMING ||
+	    dev->power.runtime_status == RPM_SUSPENDING) {
 		DEFINE_WAIT(wait);
 
 		if (rpmflags & (RPM_ASYNC | RPM_NOWAIT)) {
@@ -815,8 +823,8 @@ static int rpm_resume(struct device *dev, int rpmflags)
 		for (;;) {
 			prepare_to_wait(&dev->power.wait_queue, &wait,
 					TASK_UNINTERRUPTIBLE);
-			if (dev->power.runtime_status != RPM_RESUMING
-			    && dev->power.runtime_status != RPM_SUSPENDING)
+			if (dev->power.runtime_status != RPM_RESUMING &&
+			    dev->power.runtime_status != RPM_SUSPENDING)
 				break;
 
 			spin_unlock_irq(&dev->power.lock);
@@ -836,9 +844,9 @@ static int rpm_resume(struct device *dev, int rpmflags)
 	 */
 	if (dev->power.no_callbacks && !parent && dev->parent) {
 		spin_lock_nested(&dev->parent->power.lock, SINGLE_DEPTH_NESTING);
-		if (dev->parent->power.disable_depth > 0
-		    || dev->parent->power.ignore_children
-		    || dev->parent->power.runtime_status == RPM_ACTIVE) {
+		if (dev->parent->power.disable_depth > 0 ||
+		    dev->parent->power.ignore_children ||
+		    dev->parent->power.runtime_status == RPM_ACTIVE) {
 			atomic_inc(&dev->parent->power.child_count);
 			spin_unlock(&dev->parent->power.lock);
 			retval = 1;
@@ -867,6 +875,7 @@ static int rpm_resume(struct device *dev, int rpmflags)
 		parent = dev->parent;
 		if (dev->power.irq_safe)
 			goto skip_parent;
+
 		spin_unlock(&dev->power.lock);
 
 		pm_runtime_get_noresume(parent);
@@ -876,8 +885,8 @@ static int rpm_resume(struct device *dev, int rpmflags)
 		 * Resume the parent if it has runtime PM enabled and not been
 		 * set to ignore its children.
 		 */
-		if (!parent->power.disable_depth
-		    && !parent->power.ignore_children) {
+		if (!parent->power.disable_depth &&
+		    !parent->power.ignore_children) {
 			rpm_resume(parent, 0);
 			if (parent->power.runtime_status != RPM_ACTIVE)
 				retval = -EBUSY;
@@ -887,6 +896,7 @@ static int rpm_resume(struct device *dev, int rpmflags)
 		spin_lock(&dev->power.lock);
 		if (retval)
 			goto out;
+
 		goto repeat;
 	}
  skip_parent:
@@ -1291,9 +1301,9 @@ int __pm_runtime_set_status(struct device *dev, unsigned int status)
 		 * not active, has runtime PM enabled and the
 		 * 'power.ignore_children' flag unset.
 		 */
-		if (!parent->power.disable_depth
-		    && !parent->power.ignore_children
-		    && parent->power.runtime_status != RPM_ACTIVE) {
+		if (!parent->power.disable_depth &&
+		    !parent->power.ignore_children &&
+		    parent->power.runtime_status != RPM_ACTIVE) {
 			dev_err(dev, "runtime PM trying to activate child device %s but parent (%s) is not active\n",
 				dev_name(dev),
 				dev_name(parent));
@@ -1358,9 +1368,9 @@ static void __pm_runtime_barrier(struct device *dev)
 		dev->power.request_pending = false;
 	}
 
-	if (dev->power.runtime_status == RPM_SUSPENDING
-	    || dev->power.runtime_status == RPM_RESUMING
-	    || dev->power.idle_notification) {
+	if (dev->power.runtime_status == RPM_SUSPENDING ||
+	    dev->power.runtime_status == RPM_RESUMING ||
+	    dev->power.idle_notification) {
 		DEFINE_WAIT(wait);
 
 		/* Suspend, wake-up or idle notification in progress. */
@@ -1445,8 +1455,8 @@ void __pm_runtime_disable(struct device *dev, bool check_resume)
 	 * means there probably is some I/O to process and disabling runtime PM
 	 * shouldn't prevent the device from processing the I/O.
 	 */
-	if (check_resume && dev->power.request_pending
-	    && dev->power.request == RPM_REQ_RESUME) {
+	if (check_resume && dev->power.request_pending &&
+	    dev->power.request == RPM_REQ_RESUME) {
 		/*
 		 * Prevent suspends and idle notifications from being carried
 		 * out after we have woken up the device.
@@ -1606,6 +1616,7 @@ void pm_runtime_irq_safe(struct device *dev)
 {
 	if (dev->parent)
 		pm_runtime_get_sync(dev->parent);
+
 	spin_lock_irq(&dev->power.lock);
 	dev->power.irq_safe = 1;
 	spin_unlock_irq(&dev->power.lock);