diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-08-28 12:59:24 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-09-06 13:58:04 +0200 |
| commit | c2ce2453413d429e302659abc5ace634e873f6f5 (patch) | |
| tree | f0e90acbfa067a36dc8b9299f7dbb846474c8f81 | |
| parent | 1ad926459970444af1140f9b393f416536e1a828 (diff) | |
driver core/PM: Set power.no_callbacks along with power.no_pm
Devices with power.no_pm set are not expected to need any power
management at all, so modify device_set_pm_not_required() to set
power.no_callbacks for them too in case runtime PM will be enabled
for any of them (which in principle may be done for convenience if
such a device participates in a dependency chain).
Since device_set_pm_not_required() must be called before device_add()
or it would not have any effect, it can update power.no_callbacks
without locking, unlike pm_runtime_no_callbacks() that can be called
after registering the target device.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: stable <stable@kernel.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Link: https://lore.kernel.org/r/1950054.tdWV9SEqCh@rafael.j.wysocki
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | include/linux/device.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/device.h b/include/linux/device.h index 0470d19da7f2..b031ff71a5bd 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -851,6 +851,9 @@ static inline bool device_pm_not_required(struct device *dev) static inline void device_set_pm_not_required(struct device *dev) { dev->power.no_pm = true; +#ifdef CONFIG_PM + dev->power.no_callbacks = true; +#endif } static inline void dev_pm_syscore_device(struct device *dev, bool val) |