legacy_suspend(9)

💅 legacy_suspend(9) — like, the whole vibe

okay so this page lives in the Kernel API Manual, and it's all about legacy_suspend — the function that runs a legacy (bus or class) suspend callback for a device. bestie, it's giving "old school but still on the guest list" ✨

✨ NAME ✨

legacy_suspend — execute a legacy (bus or class) suspend callback for device.

🎀 SYNOPSIS 🎀

int legacy_suspend (struct device *dev , pm_message_t state , int
(*cb)(struct device *dev, pm_message_t state) , const char *info );

🌸 ARGUMENTS 🌸

• dev — Device to suspend. the main character of this whole operation 💅
• state — PM transition of the system being carried out. aka what kind of nap are we putting the system into 😴
• cb — Suspend callback to execute. this is the actual function that gets like, run 🏃‍♀️
• info — string description of caller. for the receipts, iykyk 🧾

🦋 SEE ALSO 🦋

so like, the kernel file ./drivers/base/power/main.c is where it's at, and here's the whole friend group — no cap, every single one of them 🫶

• pm_hibernate_is_recovering(9)
• device_pm_sleep_init(9)
• device_pm_lock(9)
• device_pm_unlock(9)
• device_pm_add(9)
• device_pm_remove(9)
• device_pm_move_before(9)
• device_pm_move_after(9)
• device_pm_move_last(9)
• dpm_wait(9)
• pm_op(9)
• pm_late_early_op(9)
• pm_noirq_op(9)
• dpm_watchdog_handler(9)
• dpm_watchdog_set(9)
• dpm_watchdog_clear(9)
• dev_pm_skip_resume(9)
• device_resume_noirq(9)
• dpm_resume_noirq(9)
• device_resume_early(9)
• dpm_resume_early(9)
• dpm_resume_start(9)
• device_resume(9)
• dpm_resume(9)
• device_complete(9)
• dpm_complete(9)
• dpm_resume_end(9)
• resume_event(9)
• device_suspend_noirq(9)
• dpm_suspend_noirq(9)
• device_suspend_late(9)
• dpm_suspend_late(9)
• dpm_suspend_end(9)
• device_suspend(9)
• dpm_suspend(9)
• device_prepare(9)
• dpm_prepare(9)
• dpm_suspend_start(9)
• device_pm_wait_for_dev(9)
• dpm_for_each_dev(9)

ngl the resume girlies and the suspend girlies are all here — read them together, it's giving full pm lifecycle 🌈

k bye ily, this page came from ./drivers/base/power, October 2026 edition — go read the source, periodt! 💖🎀🦋