hwspin_lock_bust(9)

💅 NAME 💅

hwspin_lock_bust — bust a specific hwspinlock. Okay bestie, this one is straight out of the Kernel API Manual, and it’s giving “targeted lock cleanup” energy. ✨

✨ SYNOPSIS ✨

int hwspin_lock_bust (struct hwspinlock *hwlock , unsigned int id );

🎀 ARGUMENTS 🎀

• hwlock — a previously-acquired hwspinlock which we want to bust.
• id — identifier of the remote lock holder, if applicable.

🦋 DESCRIPTION 🦋

Okay so this function will bust a hwspinlock that was previously acquired as long as the current owner of the lock matches the id given by the caller. No cap, it’s literally that simple: matching owner? Bust. 💥

🌸 CONTEXT 🌸

Process context. That’s the vibe. ✨

🔥 RETURN 🔥

• 0 — on success, slay.
• -EINVAL — if the hwspinlock does not exist, or the bust operation fails.
• -EOPNOTSUPP — if the bust operation is not defined for the hwspinlock.

👑 SEE ALSO 👑

Kernel file ./drivers/hwspinlock/hwspinlock_core.c

• __hwspin_trylock(9)
• __hwspin_lock_timeout(9)
• __hwspin_unlock(9)
• of_hwspin_lock_simple_xlate(9)
• of_hwspin_lock_get_id(9)
• of_hwspin_lock_get_id_byname(9)
• hwspin_lock_register(9)
• hwspin_lock_unregister(9)
• devm_hwspin_lock_unregister(9)
• devm_hwspin_lock_register(9)
• __hwspin_lock_request(9)
• hwspin_lock_request_specific(9)
• hwspin_lock_free(9)
• devm_hwspin_lock_free(9)
• devm_hwspin_lock_request_specific(9)

mwah 💋 this page is sourced from ./drivers/hwspinlock, dated October 2026, and it’s all about hwspin_lock_bust(9). Periodt. 🫶