acpi_dev_resume(9)

💅 acpi_dev_resume (kernel API manual, bestie edition)

Okay so this is a page from the Kernel API Manual — the acpi_dev_resume(9) one specifically — and it's honestly kind of a glow-up story: we're taking a device that's been napping and putting it back into the full-power state using ACPI. Iconic behavior. Let's get into it. ✨

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🌸 NAME 🌸

acpi_dev_resume — put device into the full-power state using ACPI.

Like, wake it up. Give it the full-power moment. Main character energy only. 👑

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🎀 SYNOPSIS 🎀

int acpi_dev_resume (struct device *dev );

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🦋 ARGUMENTS 🦋

• dev — the device you're putting into the full-power state. That's the one. Your little guy. The one getting resurrected. 🫶

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✨ DESCRIPTION ✨

So here's the vibe check: you take the given device and you put it into the full-power state using the standard ACPI mechanism. No cap, that's the whole job.

Concretely (and this part matters, so listen up fr fr):

• Set the power state of the device to ACPI D0.
• Disable wakeup.

That's it. That's the entire arc. Device goes to D0, wakeup gets turned off, everyone moves on with their lives. 💖

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🔥 SEE ALSO 🔥

Okay bestie, buckle in, because this list is long and we are not skipping a single one of them — these are all the siblings and cousins in the ACPI device power family, iykyk. 🧚

Kernel file ./drivers/acpi/device_pm.c — that's where the magic lives —

• 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_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(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)

Slay. Every single one of them, present and accounted for. 💅

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Go read them. All of them. I'll wait. 💀

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<div align=“center”>💜 🍓 💜</div>

Alright, that's the whole page! It lives under ./drivers/acpi, and this edition is dated October 2026 — so like, future vibes but make it kernel documentation. Byeee, go resume some devices responsibly! 🌈⭐🎀