genpd_dev_pm_detach(9)

💅 genpd_dev_pm_detach(9) — Kernel API Manual

okay so bestie, welcome to the Kernel API Manual, and today's main character is genpd_dev_pm_detach(9). it's a tiny little void function that breaks up with power domains. no cap. let's get into it 🫶

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✨ NAME ✨

genpd_dev_pm_detach — Detach a device from its PM domain. literally just "we're breaking up, it's not you it's the power management framework" 💔

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🌸 SYNOPSIS 🌸

void genpd_dev_pm_detach (struct device *dev , bool power_off );

that's it. that's the whole signature. she's returning void, she gives nothing back, she's just here to detach and dip 💅

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🎀 ARGUMENTS 🎀

• dev — Device to detach. this is the one getting un-coupled from its PM domain, periodt.
• power_off — Currently not used. yep, you read that right — it's sitting there in the signature looking pretty but doing absolutely nothing rn 🙈 not me pointing at an unused parameter 👀

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🦋 DESCRIPTION 🦋

so what does she actually do? she tries to locate the corresponding generic PM domain — the one that this device was attached to previously. iykyk, the whole "we used to be together" situation.

and if such a domain is found? the device is detached from it. that's the vibe check, that's the whole plot, that's the entire function. iconic, lowkey simple, highkey important 🌈

no extra steps, no drama — find the domain, detach the device, done. she ate and left no crumbs ✨

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🔥 SEE ALSO 🔥

okay bestie, this list is long and she's serving main character energy in the references department. every single one, no skipping, fr fr:

• Kernel file ./drivers/pmdomain/core.c
• dev_pm_genpd_set_performance_state(9)
• dev_pm_genpd_set_next_wakeup(9)
• dev_pm_genpd_get_next_hrtimer(9)
• dev_pm_genpd_set_hwmode(9)
• dev_pm_genpd_get_hwmode(9)
• dev_pm_genpd_rpm_always_on(9)
• dev_pm_genpd_is_on(9)
• pm_genpd_inc_rejected(9)
• genpd_queue_power_off_work(9)
• genpd_power_off(9)
• genpd_power_on(9)
• genpd_power_off_work_fn(9)
• __genpd_runtime_suspend(9)
• __genpd_runtime_resume(9)
• genpd_runtime_suspend(9)
• genpd_runtime_resume(9)
• genpd_power_off_unused(9)
• genpd_sync_power_off(9)
• genpd_sync_power_on(9)
• genpd_prepare(9)
• genpd_finish_suspend(9)
• genpd_suspend_noirq(9)
• genpd_finish_resume(9)
• genpd_resume_noirq(9)
• genpd_freeze_noirq(9)
• genpd_thaw_noirq(9)
• genpd_poweroff_noirq(9)
• genpd_restore_noirq(9)
• genpd_complete(9)
• dev_pm_genpd_suspend(9)
• dev_pm_genpd_resume(9)
• pm_genpd_add_device(9)
• pm_genpd_remove_device(9)
• dev_pm_genpd_add_notifier(9)
• dev_pm_genpd_remove_notifier(9)
• pm_genpd_add_subdomain(9)
• pm_genpd_remove_subdomain(9)
• pm_genpd_init(9)
• pm_genpd_remove(9)
• struct of_genpd_provider(9)
• genpd_xlate_simple(9)
• genpd_xlate_onecell(9)
• genpd_add_provider(9)
• of_genpd_add_provider_simple(9)
• of_genpd_add_provider_onecell(9)
• of_genpd_del_provider(9)
• genpd_get_from_provider(9)
• of_genpd_add_child_ids(9)
• of_genpd_remove_child_ids(9)
• of_genpd_add_device(9)
• of_genpd_add_subdomain(9)
• of_genpd_remove_subdomain(9)
• of_genpd_remove_last(9)
• genpd_dev_pm_attach(9)
• genpd_dev_pm_attach_by_id(9)
• genpd_dev_pm_attach_by_name(9)
• of_genpd_parse_idle_states(9)
• of_genpd_sync_state(9)

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and that's the whole page, bestie — no notes, she's perfect 🧚

💖 sign-off time: this lil doc lives under ./drivers/pmdomain, dated October 2026, and yes she's still called genpd_dev_pm_detach(9) at the bottom too. slay. 👑