acpi_subsys_poweroff(9)

💅 acpi_subsys_poweroff(9) 💅

okay so bestie, this is the acpi_subsys_poweroff(9) page from the Kernel API Manual, and it's literally about running the device driver's poweroff callback. no cap. 🫶

✨ NAME ✨

acpi_subsys_poweroff — Run the device driver's poweroff callback.

🌸 SYNOPSIS 🌸

int acpi_subsys_poweroff (struct device *dev );

🎀 ARGUMENTS 🎀

• dev — Device to handle. That's the whole argument vibe. 💖

🦋 DESCRIPTION 🦋

okay so here's the tea: this follows PCI and resumes devices from runtime suspend before running their system poweroff callbacks. The “unless” is doing main character work though — it skips that resume party only when the driver can cope with runtime-suspended devices during system suspend and there are no ACPI-specific reasons for resuming them. Both things, bestie. 💅

👑 SEE ALSO 👑

Kernel file: ./drivers/acpi/device_pm.c — and here's the whole bestie squad, no skips:

• acpi_power_state_string(9)
• acpi_device_get_power(9)
• acpi_device_set_power(9)
• acpi_device_fix_up_power(9)
• acpi_device_fix_up_power_extended(9)
• acpi_device_fix_up_power_children(9)
• acpi_dev_power_up_children_with_adr(9)
• acpi_dev_power_state_for_wake(9)
• acpi_add_pm_notifier(9)
• acpi_remove_pm_notifier(9)
• acpi_dev_pm_get_state(9)
• acpi_pm_device_sleep_state(9)
• acpi_pm_notify_work_func(9)
• acpi_device_wakeup_enable(9)
• acpi_device_wakeup_disable(9)
• acpi_pm_set_device_wakeup(9)
• acpi_dev_pm_low_power(9)
• acpi_dev_pm_full_power(9)
• acpi_dev_suspend(9)
• acpi_dev_resume(9)
• acpi_subsys_runtime_suspend(9)
• acpi_subsys_runtime_resume(9)
• acpi_subsys_prepare(9)
• acpi_subsys_complete(9)
• acpi_subsys_suspend(9)
• acpi_subsys_suspend_late(9)
• acpi_subsys_suspend_noirq(9)
• acpi_subsys_resume_noirq(9)
• acpi_subsys_resume_early(9)
• acpi_subsys_resume(9)
• acpi_subsys_freeze(9)
• acpi_subsys_restore_early(9)
• acpi_subsys_poweroff_late(9)
• acpi_subsys_poweroff_noirq(9)
• acpi_dev_pm_detach(9)
• acpi_dev_pm_attach(9)
• acpi_storage_d3(9)
• acpi_dev_state_d0(9)

mwah 💋 this page's source/version is ./drivers/acpi, and the date on it is October 2026. acpi_subsys_poweroff(9) out — slay and stay powered off (in the callback sense). 🌈✨