of_hwspin_lock_get_id(9)

📦 version 7.3.1, in nixpkgs unstable

okay so bestie, welcome to the of_hwspin_lock_get_id(9) page from the Kernel API Manual — it's all about getting a lock id for an OF phandle-based specific lock. Let's get into it 💅✨

🎀 NAME 🎀

of_hwspin_lock_get_id — get lock id for an OF phandle-based specific lock. That's the whole vibe, no cap.

✨ SYNOPSIS ✨

int of_hwspin_lock_get_id (struct device_node *np , int index );

🫶 ARGUMENTS 🫶

  • np — device node from which to request the specific hwlock. That's the node you're pulling from, bestie.
  • index — index of the hwlock in the list of values. It's literally telling you which one in the list, iykyk.

💖 DESCRIPTION 💖

So here's the tea: this function gives DT users of the hwspinlock module a way to get the global lock id of a specific hwspinlock by using the phandle of the hwspinlock device. Why are we doing this? So it can be requested using the normal hwspin_lock_request_specific API. Iconic little lookup moment, fr fr 🌸

🌈 RETURN 🌈

On success you get the global lock id number — slay ✨. Otherwise:

  • -EPROBE_DEFER if the hwspinlock device is not yet registered
  • -EINVAL on invalid args specifier value
  • or an appropriate error as returned from the OF parsing of the DT client node

🦋 SEE ALSO 🦋

Kernel file: ./drivers/hwspinlock/hwspinlock_core.c — the source file in question 💅

And the whole crew:

okay bye bestie 🫶 this page's source/version is ./drivers/hwspinlock, dated October 2026, and it's filed under of_hwspin_lock_get_id(9) — stay hydrated and keep those locks iconic 💖✨

📦 where this page comes from