__hwspin_lock_request(9)

✨ __hwspin_lock_request(9) ✨

okay bestie, so this one's from the Kernel API Manual (yes, the kernel has lore and we're gonna read it 💅) and honestly it's a lowkey internal glow-up ritual for an hwspinlock before it gets handed to a user. let's get into it 🎀

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🌸 NAME 🌸

__hwspin_lock_request — tag an hwspinlock as used and power it up ⚡

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🦋 SYNOPSIS 🦋

int __hwspin_lock_request (struct hwspinlock *hwlock );

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🎀 ARGUMENTS 🎀

• hwlock — the target hwspinlock 👑 like, the actual one you're requesting, bestie

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💖 DESCRIPTION 💖

so this is an internal function — not the main character you call from your driver, okay? 🙈 it's the behind-the-scenes bestie that prepares an hwspinlock instance before it gets given to the user. it's giving backstage crew energy fr fr ✨

⚠️ heads up: this function assumes that hwspinlock_tree_lock is taken. already held. by you. before you call it. no cap, it does not take it for you 😭

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🔥 RETURN 🔥

0 or a positive value means success, slay 💅 and a negative value means an error — with the appropriate error code attached 🫶

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🌈 SEE ALSO 🌈

kernel file ./drivers/hwspinlock/hwspinlock_core.c — and its whole friend group:

• __hwspin_trylock(9)
• __hwspin_lock_timeout(9)
• __hwspin_unlock(9)
• hwspin_lock_bust(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_specific(9)
• hwspin_lock_free(9)
• devm_hwspin_lock_free(9)
• devm_hwspin_lock_request_specific(9)

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and that's the whole page, bestie 🧚 no notes, it ate 💜

sign-off szn ✨ this one lives in ./drivers/hwspinlock and it's stamped October 2026 — iconic, dated, and correct 🎀🫶