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authorLinus Torvalds <torvalds@linux-foundation.org>2023-02-21 23:13:58 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-02-21 23:13:58 +0300
commit2504ba8b01634319a6f95b7fa9bf9c101437e158 (patch)
treed479a6cc799f958c3961d10d0149d63649901f40 /drivers/base
parent4a7d37e824f57dbace61abf62f53843800bd245c (diff)
parentdd855f01e8d194d2dfeda36b620203c623c10430 (diff)
downloadlinux-2504ba8b01634319a6f95b7fa9bf9c101437e158.tar.xz
Merge tag 'pm-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki: "These add EPP support to the AMD P-state cpufreq driver, add support for new platforms to the Intel RAPL power capping driver, intel_idle and the Qualcomm cpufreq driver, enable thermal cooling for Tegra194, drop the custom cpufreq driver for loongson1 that is not necessary any more (and the corresponding cpufreq platform device), fix assorted issues and clean up code. Specifics: - Add EPP support to the AMD P-state cpufreq driver (Perry Yuan, Wyes Karny, Arnd Bergmann, Bagas Sanjaya) - Drop the custom cpufreq driver for loongson1 that is not necessary any more and the corresponding cpufreq platform device (Keguang Zhang) - Remove "select SRCU" from system sleep, cpufreq and OPP Kconfig entries (Paul E. McKenney) - Enable thermal cooling for Tegra194 (Yi-Wei Wang) - Register module device table and add missing compatibles for cpufreq-qcom-hw (Nícolas F. R. A. Prado, Abel Vesa and Luca Weiss) - Various dt binding updates for qcom-cpufreq-nvmem and opp-v2-kryo-cpu (Christian Marangi) - Make kobj_type structure in the cpufreq core constant (Thomas Weißschuh) - Make cpufreq_unregister_driver() return void (Uwe Kleine-König) - Make the TEO cpuidle governor check CPU utilization in order to refine idle state selection (Kajetan Puchalski) - Make Kconfig select the haltpoll cpuidle governor when the haltpoll cpuidle driver is selected and replace a default_idle() call in that driver with arch_cpu_idle() to allow MWAIT to be used (Li RongQing) - Add Emerald Rapids Xeon support to the intel_idle driver (Artem Bityutskiy) - Add ARCH_SUSPEND_POSSIBLE dependencies for ARMv4 cpuidle drivers to avoid randconfig build failures (Arnd Bergmann) - Make kobj_type structures used in the cpuidle sysfs interface constant (Thomas Weißschuh) - Make the cpuidle driver registration code update microsecond values of idle state parameters in accordance with their nanosecond values if they are provided (Rafael Wysocki) - Make the PSCI cpuidle driver prevent topology CPUs from being suspended on PREEMPT_RT (Krzysztof Kozlowski) - Document that pm_runtime_force_suspend() cannot be used with DPM_FLAG_SMART_SUSPEND (Richard Fitzgerald) - Add EXPORT macros for exporting PM functions from drivers (Richard Fitzgerald) - Remove /** from non-kernel-doc comments in hibernation code (Randy Dunlap) - Fix possible name leak in powercap_register_zone() (Yang Yingliang) - Add Meteor Lake and Emerald Rapids support to the intel_rapl power capping driver (Zhang Rui) - Modify the idle_inject power capping facility to support 100% idle injection (Srinivas Pandruvada) - Fix large time windows handling in the intel_rapl power capping driver (Zhang Rui) - Fix memory leaks with using debugfs_lookup() in the generic PM domains and Energy Model code (Greg Kroah-Hartman) - Add missing 'cache-unified' property in the example for kryo OPP bindings (Rob Herring) - Fix error checking in opp_migrate_dentry() (Qi Zheng) - Let qcom,opp-fuse-level be a 2-long array for qcom SoCs (Konrad Dybcio) - Modify some power management utilities to use the canonical ftrace path (Ross Zwisler) - Correct spelling problems for Documentation/power/ as reported by codespell (Randy Dunlap)" * tag 'pm-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (53 commits) Documentation: amd-pstate: disambiguate user space sections cpufreq: amd-pstate: Fix invalid write to MSR_AMD_CPPC_REQ dt-bindings: opp: opp-v2-kryo-cpu: enlarge opp-supported-hw maximum dt-bindings: cpufreq: qcom-cpufreq-nvmem: make cpr bindings optional dt-bindings: cpufreq: qcom-cpufreq-nvmem: specify supported opp tables PM: Add EXPORT macros for exporting PM functions cpuidle: psci: Do not suspend topology CPUs on PREEMPT_RT MIPS: loongson32: Drop obsolete cpufreq platform device powercap: intel_rapl: Fix handling for large time window cpuidle: driver: Update microsecond values of state parameters as needed cpuidle: sysfs: make kobj_type structures constant cpuidle: add ARCH_SUSPEND_POSSIBLE dependencies PM: EM: fix memory leak with using debugfs_lookup() PM: domains: fix memory leak with using debugfs_lookup() cpufreq: Make kobj_type structure constant cpufreq: davinci: Fix clk use after free cpufreq: amd-pstate: avoid uninitialized variable use cpufreq: Make cpufreq_unregister_driver() return void OPP: fix error checking in opp_migrate_dentry() dt-bindings: cpufreq: cpufreq-qcom-hw: Add SM8550 compatible ...
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/power/domain.c5
-rw-r--r--drivers/base/power/runtime.c4
2 files changed, 5 insertions, 4 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 967bcf9d415e..6097644ebdc5 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -220,13 +220,10 @@ static void genpd_debug_add(struct generic_pm_domain *genpd);
static void genpd_debug_remove(struct generic_pm_domain *genpd)
{
- struct dentry *d;
-
if (!genpd_debugfs_dir)
return;
- d = debugfs_lookup(genpd->name, genpd_debugfs_dir);
- debugfs_remove(d);
+ debugfs_lookup_and_remove(genpd->name, genpd_debugfs_dir);
}
static void genpd_update_accounting(struct generic_pm_domain *genpd)
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 98f7b3d7d669..4545669cb973 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -1864,6 +1864,10 @@ static bool pm_runtime_need_not_resume(struct device *dev)
* sure the device is put into low power state and it should only be used during
* system-wide PM transitions to sleep states. It assumes that the analogous
* pm_runtime_force_resume() will be used to resume the device.
+ *
+ * Do not use with DPM_FLAG_SMART_SUSPEND as this can lead to an inconsistent
+ * state where this function has called the ->runtime_suspend callback but the
+ * PM core marks the driver as runtime active.
*/
int pm_runtime_force_suspend(struct device *dev)
{