pm_runtime_allow(9)

✨ pm_runtime_allow(9) — from the Kernel API Manual ✨

ok so we're deep in the kernel docs rn, and this one is a function called pm_runtime_allow — it's literally in the Kernel API Manual, bestie, we're doing Big Kernel Things today 💅

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🌸 NAME 🌸

pm_runtime_allow — Unblock runtime PM of a device. that's it, that's the whole vibe 🫶

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🦋 SYNOPSIS 🦋

void pm_runtime_allow (struct device *dev );

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🎀 ARGUMENTS 🎀

• dev — Device to handle. like, the device you're doing this to. the main character device, if you will 👑

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💖 DESCRIPTION 💖

okay so picture this: your dev got its runtime suspend blocked at some point — probz by pm_runtime_forbid (for instance, if it's been blocked via the /sys/devices/.../power/control interface, iykyk). this function is the ✨unblocking✨ moment.

pm_runtime_allow unblocks runtime suspend of dev after it's been blocked like that, then it checks whether dev can actually be suspended — and if it can, it suspends it right then and there. no cap. 🔥

and here's a fun little detail: calling this function many times in a row? same effect as calling it once. so spam it if you want, it's lowkey idempotent 🫶 not me being obsessed with a repeat-safe API.

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/base/power/runtime.c — the source file, go read it bestie, it's giving lore 📖
• update_pm_runtime_accounting(9)
• pm_runtime_deactivate_timer(9)
• pm_runtime_cancel_pending(9)
• rpm_check_suspend_allowed(9)
• pm_runtime_release_supplier(9)
• __rpm_callback(9)
• rpm_callback(9)
• rpm_idle(9)
• rpm_suspend(9)
• rpm_resume(9)
• pm_runtime_work(9)
• pm_suspend_timer_fn(9)
• pm_schedule_suspend(9)
• __pm_runtime_idle(9)
• __pm_runtime_suspend(9)
• __pm_runtime_resume(9)
• pm_runtime_get_conditional(9)
• pm_runtime_get_if_active(9)
• pm_runtime_get_if_in_use(9)
• __pm_runtime_set_status(9)
• __pm_runtime_barrier(9)
• pm_runtime_barrier(9)
• pm_runtime_enable(9)
• devm_pm_runtime_set_active_enabled(9)
• devm_pm_runtime_enable(9)
• devm_pm_runtime_get_noresume(9)
• pm_runtime_forbid(9) — the one that started all this drama 💀
• pm_runtime_no_callbacks(9)
• pm_runtime_irq_safe(9)
• update_autosuspend(9)
• pm_runtime_set_autosuspend_delay(9)
• __pm_runtime_use_autosuspend(9)
• pm_runtime_init(9)
• pm_runtime_reinit(9)
• pm_runtime_remove(9)
• pm_runtime_get_suppliers(9)
• pm_runtime_put_suppliers(9)
• pm_runtime_drop_link(9)
• pm_runtime_force_suspend(9)
• pm_runtime_force_resume(9)

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that's the whole page, bestie — no hidden sections, no jump scares 🙈

ok bye, this page lives under ./drivers/base/power and it's dated October 2026 — so like, future-coded but make it kernel. mwah, slay, periodt 💋🎀🦋