pm_runtime_get_if_in_use(9)

💖 pm_runtime_get_if_in_use(9) 💖

okay bestie, welcome to the Kernel API Manual — today’s main character is pm_runtime_get_if_in_use, and it’s giving conditional runtime PM counter bump energy. 💅✨

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✨ NAME ✨

pm_runtime_get_if_in_use — conditionally bump up the runtime PM usage counter. That’s the whole vibe. 💖

🎀 SYNOPSIS 🎀

int pm_runtime_get_if_in_use (struct device *dev );

🌸 ARGUMENTS 🌸

• dev — target device. The one and only device we’re checking, bestie. 🫶

💅 DESCRIPTION 💅

okay so here’s the tea ☕: this function increments the runtime PM usage counter of dev only if the conditions line up. The bump happens if dev’s runtime PM status is RPM_ACTIVE and its runtime PM usage counter is greater than 0 or it is not ignoring children and its active child count is nonzero. When that happens, 1 is returned. slay. ✨

If dev is in a different state or it is not in use — meaning its usage counter is 0, or it is ignoring children, or its active child count is 0 — then 0 is returned. No bump, no drama. 💀

And if runtime PM is disabled for the device, -EINVAL is returned. In that case the usage counter of dev is not updated either. so no sneaky increment, okay? 🙈

🌈 SEE ALSO 🌈

Kernel file: ./drivers/base/power/runtime.c 📁

Related functions, exact names and all:

• 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_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), 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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💖 cute sign-off: source/version ./drivers/base/power, date October 2026, page for pm_runtime_get_if_in_use(9). bye bestie — go bump those counters responsibly! 💅✨