devm_hwspin...est_specific(9)

📦 version 7.3.1, in nixpkgs unstable

💖 devm_hwspin_lock_request_specific(9) 💖

okay so you're reading the Kernel API Manual (that's the section 9 vibe, kernel internals only, iykyk) and the star of the show is devm_hwspin_lock_request_specific. Buckle up bestie, it's a good one 🎀

✨ NAME ✨

devm_hwspin_lock_request_specific — request for a specific hwspinlock for a managed device 🌸

🦋 SYNOPSIS 🦋

struct hwspinlock * devm_hwspin_lock_request_specific (struct device
*dev , unsigned int id );

💅 ARGUMENTS 💅

  • dev — the device that's requesting the specific hwspinlock 👑
  • id — the index of the specific hwspinlock that's being requested 🔢

🌈 DESCRIPTION 🌈

So this is the function you call when you're a user of the hwspinlock module and you want the kernel to hand you one specific hwspinlock — not just any rando lock, a particular one. no cap, it's a whole vibe check for lock identity 💯

Usually it's the early board code that calls this, because they want to reserve specific hwspinlock ids for predefined purposes. like, "this lock is OURS, we called dibs" energy 🫶

⚠️ heads up bestie: this should be called from a process context — and yes, that means it might sleep 😴 so don't go calling it from somewhere spicy where sleeping is illegal, fr fr.

⭐ RETURN ⭐

it hands you back the address of the assigned hwspinlock 💖 … or NULL on error 😭 (in which case, respectfully, it did not slay).

🔥 SEE ALSO 🔥

the kernel file lives at ./drivers/hwspinlock/hwspinlock_core.c — go read it, it's giving main character energy 📖✨ and here's the whole friend group:

and that's the whole page, mwah 💋 this one comes straight out of ./drivers/hwspinlock, dated October 2026 — go forth and lock responsibly, bestie 🧚💜

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