devm_hwspin_lock_register(9)

📦 version 7.3.1, in nixpkgs unstable

✨ devm_hwspin_lock_register(9) ✨

okay bestie, so this one's a kernel API manual page, and honestly? It's giving "niche but crucial" energy. Welcome to the group chat 💅

🌸 NAME 🌸

devm_hwspin_lock_register — it registers a brand-new hw spinlock device for a managed device. Yes, the "devm" is doing a lot of work there, and yes, it's iconic for it 🎀

🦋 SYNOPSIS 🦋

int devm_hwspin_lock_register (struct device *dev , struct
hwspinlock_device *bank , const struct hwspinlock_ops *ops , int base_id
, int num_locks );

💖 ARGUMENTS 💖

  • dev — the backing device. The main character, basically.
  • bank — the hwspinlock device, which usually provides a whole bunch of hw locks. It's like a little lock collection, fr fr.
  • ops — the hwspinlock handlers for this device. The behavior squad.
  • base_id — the id of the first hardware spinlock in this bank. Where the numbering starts, no cap.
  • num_locks — how many hwspinlocks this device provides. The headcount 🫶

🧚 DESCRIPTION 🧚

So basically, you call this function from the underlying platform-specific implementation to register a new hwspinlock device instance. That's the whole assignment. ✨

Lowkey important: it should be called from a process context — and yeah, it might sleep 😴 so don't you dare call it from somewhere that can't handle that.

🔥 RETURN 🔥

  • 0 on success 💖
  • or an appropriate error code on failure 😭

👑 SEE ALSO 👑

Kernel file ./drivers/hwspinlock/hwspinlock_core.c

The whole bestie lineup, in order:

k that's the page!! 🌈 it lives under the source ./drivers/hwspinlock, and the date on this beauty is October 2026 — so yeah, future vibes, we love to see it. go forth and register those spinlock devices, bestie, you're gonna slay 🦋💜✨

📦 where this page comes from