devm_hwspin_lock_free(9)

📦 version 7.3.1, in nixpkgs unstable

✨ devm_hwspin_lock_free(9) ✨

okay so bestie, we're in the Kernel API Manual today and this one is genuinely a little cleanup queen 💅 — it's devm_hwspin_lock_free, and yes she's managed, yes she's tidy, and yes she's about to give that hwspinlock her freedom back 🦋

🎀 NAME 🎀

devm_hwspin_lock_free — free a specific hwspinlock for a managed device. that's it. that's the whole vibe. releasing your lock back into the wild so someone else can have a turn 💖

⭐ SYNOPSIS ⭐

int devm_hwspin_lock_free (struct device *dev , struct hwspinlock
*hwlock );

look at her. two arguments, returns an int, no drama 💅

🌸 ARGUMENTS 🌸

  • dev — the device that's freeing this specific hwspinlock. like, whose lock is it? this one's. 🫶
  • hwlock — the actual specific hwspinlock being freed. the one and only. no cap.

💖 DESCRIPTION 💖

so this function marks hwlock as free again ✨ that's literally the whole job and she does it well.

⚠️ okay important bestie: you should only call this with an hwlock that was retrieved from an earlier call to hwspin_lock_request{_specific}. not some random lock you found lying around. that's not slay, that's chaos 😭

also!! this one should be called from a process context — because it might sleep 💀 so no sneaking it into weird contexts, iykyk.

🔥 RETURN 🔥

0 on success, or an appropriate error code on failure. she either ate or she didn't, and she'll tell you which 💀

🦋 SEE ALSO 🦋

the whole friend group 🫶 — kernel file ./drivers/hwspinlock/hwspinlock_core.c, plus:

and that's the page, bestie 💜 this little icon lives in ./drivers/hwspinlock, dated October 2026, and her full name is of course devm_hwspin_lock_free(9) — go forth and free your locks responsibly 🎀✨

📦 where this page comes from