pm_request_autosuspend(9)

✨ pm_request_autosuspend(9) ✨

okay bestie, welcome to the pm_request_autosuspend page 💖 this one lives in the Kernel API Manual (that's the 9 section, kernel API girlies rise 🫶), and ngl it's short, sweet, and kind of iconic? like it does one job and does it slayfully ✨

It's the one that bumps a device's last access time and queues up an autosuspend for later. main character energy fr fr 👑

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🌸 NAME 🌸

pm_request_autosuspend — updates the last access time, and then queues up an autosuspend of a device. that's the whole vibe 💅

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🎀 SYNOPSIS 🎀

int pm_request_autosuspend (struct device *dev );

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🦋 ARGUMENTS 🦋

• dev — the target device 🎯 like, the device you're doing this to. the one getting the autosuspend treatment.

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💜 DESCRIPTION 💜

So here's the tea ☕: this function updates the last access time of a device, and then it queues up a work item so that an equivalent pm_runtime_autosuspend for dev runs asynchronously. lowkey, that's it. that's the whole function. it's giving "set it and forget it" ✨

note the word asynchronously — it gets queued as a work item, it doesn't happen right this second. respect the queue bestie 😌

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⭐ RETURN ⭐

the return values, and honestly there are a lot of them, so buckle up 💀

• 1 — Success! 🎉 and specifically: the device was already suspended. so like, success but it was already chilling.
• 0 — Success. plain and simple, no notes 👑
• -EINVAL — Runtime PM error 😭
• -EACCES — Runtime PM is disabled 🙈
• -EAGAIN — the Runtime PM usage counter is non-zero, or a Runtime PM status change is ongoing 🌀
• -EBUSY — the Runtime PM child_count is non-zero 👶 like, the children said not yet
• -EPERM — Device PM QoS resume latency is 0 🚫
• -EINPROGRESS — a suspend is already in progress ⏳ we're already doing this!!
• -ENOSYS — CONFIG_PM is not enabled 💀 no config, no service

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🌈 SEE ALSO 🌈

this list is LONG bestie, grab a snack 🍓 — and heads up, it's all sourced from the kernel file ./include/linux/pm_runtime.h:

• pm_suspend_ignore_children(9)
• pm_runtime_get_noresume(9)
• pm_runtime_put_noidle(9)
• pm_runtime_suspended(9)
• pm_runtime_active(9)
• pm_runtime_status_suspended(9)
• pm_runtime_enabled(9)
• pm_runtime_blocked(9)
• pm_runtime_has_no_callbacks(9)
• pm_runtime_mark_last_busy(9)
• pm_runtime_is_irq_safe(9)
• pm_runtime_idle(9)
• pm_runtime_suspend(9)
• pm_runtime_autosuspend(9)
• pm_runtime_resume(9)
• pm_request_idle(9)
• pm_request_resume(9)
• pm_runtime_get(9)
• pm_runtime_get_sync(9)
• pm_runtime_resume_and_get(9)
• pm_runtime_put(9)
• __pm_runtime_put_autosuspend(9)
• pm_runtime_put_autosuspend(9)
• pm_runtime_put_sync(9)
• pm_runtime_put_sync_suspend(9)
• pm_runtime_put_sync_autosuspend(9)
• pm_runtime_set_active(9)
• pm_runtime_set_suspended(9)
• pm_runtime_disable(9)
• pm_runtime_use_autosuspend(9)
• pm_runtime_dont_use_autosuspend(9)

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and that's the whole page!! 🧚 no cap, go autosuspend something responsibly 💖

sign-off time: this lil masterpiece comes to you from ./include/linux 📁 and it's dated October 2026 🗓️ — it's giving future icon. mwah 💋 periodt 🎀