devm_hwspin_lock_unregister(9)

📦 version 7.3.1, in nixpkgs unstable

💅 devm_hwspin_lock_unregister(9) ✨

okay so bestie, welcome to the Kernel API Manual — yes, this is a real page from the kernel docs, and yes, we're gonna make it make sense 🫶

🌸 NAME 🌸

devm_hwspin_lock_unregister — literally the function that unregisters an hw spinlock device for a managed device. that's it, that's the vibe 💅

✨ SYNOPSIS ✨

int devm_hwspin_lock_unregister(struct device *dev, struct hwspinlock_device *bank);

no cap, that's the whole signature — two args, one int coming back at ya 🎀

🦋 ARGUMENTS 🦋

  • dev — the backing device. the main character of this call, honestly 👑
  • bank — the hwspinlock device, which usually provides numerous hw locks. think of it as the whole friend group of locks, not just one 🍓

💖 DESCRIPTION 💖

okay so here's the tea: this function should be called from the underlying platform-specific implementation, and its whole job is to unregister an existing hwspinlock — and like, specifically an unused one. so if it's still in use, that's not this function's moment, y'know? 🙈

also, important: it should be called from a process context (might sleep). so like, not from an interrupt or anything spicy. it might nap. let it nap 😭

bestie pls remember the process context thing — "might sleep" is not a suggestion, it's a whole rule 💀

🔥 RETURN 🔥

  • 0 on success — slay 🎉
  • or an appropriate error code on failure — it's giving "something went wrong" but at least it tells you 😌

🌈 SEE ALSO 🌈

kernel file ./drivers/hwspinlock/hwspinlock_core.c, plus the whole squad:

and that's the page!! 🧚

sign-off time: this lil beauty lives under ./drivers/hwspinlock and it's dated October 2026 — so yeah, future vibes only ⭐ love that for us. mwah, go unregister responsibly 💜

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