macio_request_resource(9)

💖 macio_request_resource(9) 💖

okay so bestie, welcome to the Kernel API Manual — this one's a MacIO function and it's honestly giving "please don't touch my stuff until I say so" energy 🎀

---

✨ NAME ✨

macio_request_resource — Request an MMIO resource 🦋

---

🌸 SYNOPSIS 🌸

int macio_request_resource (struct macio_dev *dev , int resource_no ,
       const char *name );

---

💅 ARGUMENTS 💅

• dev — pointer to the device holding the resource (your main character device, basically 👑)
• resource_no — resource number to request (which one are we claiming, bestie?)
• name — resource name (the owner's name tag 🏷️)

---

⭐ DESCRIPTION ⭐

okay so what this does is it marks memory region number resource_no associated with the MacIO device dev as being reserved by owner name. literally just putting your name on it 💖

🚨 no cap, this part matters: do NOT access any address inside the memory regions unless this call returns successfully. like, at all. wait for the green light fr fr 🚦

Returns 0 on success, or EBUSY on error. A warning message is also printed on failure — so if you see the warning, that's the code being like "girl…" 😭💀

---

👀 SEE ALSO 👀

• Kernel file ./drivers/macintosh/macio_asic.c
• macio_release_dev(9)
• macio_resource_quirks(9)
• macio_add_one_device(9)
• macio_pci_add_devices(9)
• macio_register_driver(9)
• macio_unregister_driver(9)
• macio_release_resource(9)
• macio_request_resources(9)
• macio_release_resources(9)

---

and that's the whole vibe check bestie ✨ this one comes to you from ./drivers/macintosh, dated October 2026, and it's filed under macio_request_resource(9) — ily, go reserve responsibly 🫶🎀💜