Merge tag 'pm-5.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:

 - prevent the intel_pstate driver from printing excessive diagnostic
   messages in some cases (Chris Wilson)

 - make the hibernation restore kernel freeze kernel threads as well as
   user space tasks (Dexuan Cui)

 - fix the ACPI device PM disagnostic messages to include the correct
   power state name (Kai-Heng Feng).

* tag 'pm-5.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM: ACPI: Output correct message on target power state
  PM: hibernate: Freeze kernel threads in software_resume()
  cpufreq: intel_pstate: Only mention the BIOS disabling turbo mode once

diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index b2263ec67b432e14cca0df18434fed68cab0373e..5832bc10aca8d5ff93354df2bcf59d00fd67640d 100644 (file)
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -273,13 +273,13 @@ int acpi_device_set_power(struct acpi_device *device, int state)
  end:
        if (result) {
                dev_warn(&device->dev, "Failed to change power state to %s\n",
-                        acpi_power_state_string(state));
+                        acpi_power_state_string(target_state));
        } else {
                device->power.state = target_state;
                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
                                  "Device [%s] transitioned to %s\n",
                                  device->pnp.bus_id,
-                                 acpi_power_state_string(state)));
+                                 acpi_power_state_string(target_state)));
        }
 
        return result;

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 4d1e25d1ced18e878859346b35dc81d2e864f95f..4d3429b2058fcc5f16582b53c516922c263d56ae 100644 (file)
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -1059,7 +1059,7 @@ static ssize_t store_no_turbo(struct kobject *a, struct kobj_attribute *b,
 
        update_turbo_state();
        if (global.turbo_disabled) {
-               pr_warn("Turbo disabled by BIOS or unavailable on processor\n");
+               pr_notice_once("Turbo disabled by BIOS or unavailable on processor\n");
                mutex_unlock(&intel_pstate_limits_lock);
                mutex_unlock(&intel_pstate_driver_lock);
                return -EPERM;

diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index 86aba8706b1654b83162fb2888916f2de013f6b0..30bd28d1d418cce6d785d1b65e68f429a253845d 100644 (file)
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -898,6 +898,13 @@ static int software_resume(void)
        error = freeze_processes();
        if (error)
                goto Close_Finish;
+
+       error = freeze_kernel_threads();
+       if (error) {
+               thaw_processes();
+               goto Close_Finish;
+       }
+
        error = load_image_and_restore();
        thaw_processes();
  Finish: