clk_pm_runtime_get_all(9)

okay bestie, welcome to the clk_pm_runtime_get_all(9) page from the Kernel API Manual ✨ this one is a runtime-PM anti-deadlock baddie and she ate 💅

💖 NAME 💖

clk_pm_runtime_get_all — runtime "get" all clk provider devices, no cap 👑

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✨ SYNOPSIS ✨

int clk_pm_runtime_get_all (void );

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🎀 ARGUMENTS 🎀

• void — no arguments. literally none. not a single little guy. 🫶

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🦋 DESCRIPTION 🦋

okay so the whole move here is: call clk_pm_runtime_get on all runtime PM enabled clks in the clk tree so that disabling unused clks avoids a deadlock. yes, deadlock. the final boss of "why is my kernel stuck" energy 💀

the deadlock situation is giving: a device is runtime PM resuming/suspending, and the runtime PM callback is trying to grab the prepare_lock for something like clk_prepare_enable, while clk_disable_unused_subtree holds the prepare_lock and is trying to runtime PM resume/suspend the device as well. circular wait vibes, absolutely not iconic 😭

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🔒 CONTEXT 🔒

acquires the 'clk_rpm_list_lock' and returns with the lock held on success. otherwise the lock is released on failure. no sneaky half-held lock energy, bestie 🔐

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⭐ RETURN ⭐

• 0 on success
• negative errno otherwise

that's the whole mood. success = 0, anything else = negative errno 🫡

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🌈 SEE ALSO 🌈

the whole squad, in original order, no skips:

• Kernel file ./drivers/clk/clk.c struct clk_core(9)
• clk_pm_runtime_put_all(9)
• clk_core_get(9)
• clk_determine_rate_noop(9)
• clk_rate_exclusive_put(9)
• clk_rate_exclusive_get(9)
• clk_unprepare(9)
• clk_prepare(9)
• clk_disable(9)
• clk_gate_restore_context(9)
• clk_save_context(9)
• clk_restore_context(9)
• clk_enable(9)
• clk_is_enabled_when_prepared(9)
• clk_hw_init_rate_request(9)
• clk_hw_forward_rate_request(9)
• __clk_determine_rate(9)
• clk_hw_round_rate(9)
• clk_round_rate(9)
• __clk_notify(9)
• __clk_recalc_accuracies(9)
• clk_get_accuracy(9)
• __clk_recalc_rates(9)
• clk_get_rate(9)
• clk_hw_get_parent_index(9)
• __clk_speculate_rates(9)
• clk_set_rate(9)
• clk_set_rate_exclusive(9)
• clk_set_rate_range(9)
• clk_set_min_rate(9)
• clk_set_max_rate(9)
• clk_get_parent(9)
• clk_has_parent(9)
• clk_set_parent(9)
• clk_set_phase(9)
• clk_get_phase(9)
• clk_set_duty_cycle(9)
• clk_get_scaled_duty_cycle(9)
• clk_is_match(9)
• clk_debug_register(9)
• clk_debug_init(9)
• __clk_core_init(9)
• clk_core_link_consumer(9)
• clk_core_unlink_consumer(9)
• alloc_clk(9)
• free_clk(9)
• clk_hw_create_clk(9)
• clk_hw_get_clk(9)
• dev_or_parent_of_node(9)
• clk_register(9)
• clk_hw_register(9)
• clk_unregister(9)
• clk_hw_unregister(9)
• devm_clk_register(9)
• devm_clk_hw_register(9)
• devm_clk_hw_get_clk(9)
• clk_notifier_register(9)
• clk_notifier_unregister(9)
• struct of_clk_provider(9)
• of_clk_add_provider(9)
• of_clk_add_hw_provider(9)
• devm_of_clk_add_hw_provider(9)
• of_clk_del_provider(9)
• of_parse_clkspec(9)
• of_clk_get_from_provider(9)
• of_clk_get_by_name(9)
• of_clk_get_parent_count(9)
• of_clk_parent_fill(9)
• of_clk_detect_critical(9)
• of_clk_init(9)

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okay that's the page, bestie 💖 source/version stamp: ./drivers/clk; date on this cutie: October 2026; and yes, it's still the clk_pm_runtime_get_all(9) manual page. bye bestie, go get all those clks 🫶✨