update_autosuspend(9)

update_autosuspend(9) 💅

okay so bestie, welcome to the Kernel API Manual page for update_autosuspend(9) — we're handling a change to a device's autosuspend settings and yes, it's giving very specific kernel-core energy ✨

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🎀 NAME 🎀

update_autosuspend — handles a change to a device's autosuspend settings. That's the whole name vibe, no cap 💖

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✨ SYNOPSIS ✨

void update_autosuspend (struct device *dev , int old_delay , int
old_use );

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🦋 ARGUMENTS 🦋

• dev — the device to handle. That's the main character here 🫶
• old_delay — the former autosuspend_delay value, iykyk.
• old_use — the former use_autosuspend value, periodt.

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💖 DESCRIPTION 💖

So here's the situation, bestie: runtime suspend gets prevented if the new delay is negative and use_autosuspend is set; otherwise it's allowed. And if suspends are allowed, an idle notification gets sent. That's the tea ☕✨

⚠️ Important, fr fr: this function must be called under dev->power.lock with interrupts disabled. Not optional, not a little suggestion, not a vibe — like, actually do it 💀

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🌈 SEE ALSO 🌈

okay these are the related pages and the kernel file, all linked up like a very niche group chat 👑

• Kernel file: ./drivers/base/power/runtime.c
• 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)
• pm_runtime_allow(9)
• pm_runtime_no_callbacks(9)
• pm_runtime_irq_safe(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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xoxo, your kernel bestie 💖 this page is signed off from ./drivers/base/power, October 2026. slay and stay cozy 🌸