of_irq_count(9)

💅 of_irq_count(9)

okay so this is a kernel API manual page, bestie — of_irq_count(9), live from the Kernel API Manual, and it's literally about counting IRQs on a device tree node 🎀

---

✨ NAME ✨

of_irq_count — count the number of IRQs a node uses 💖

like, that's it. that's the whole job. it counts. no cap.

---

🌸 SYNOPSIS 🌸

int of_irq_count (struct device_node *dev );

she takes one pointer and hands you back an int, periodt ✨

---

🦋 ARGUMENTS 🦋

• dev — pointer to device tree node 🫶 — this is the node you're asking about, the main character of the whole operation ngl

---

🔥 SEE ALSO 🔥

the kernel file lives at ./drivers/of/irq.c — that's where the magic happens, iykyk 💜

and here's the whole friend group, all the sibling functions you should absolutely go check out:

• irq_of_parse_and_map(9)
• of_irq_find_parent(9)
• of_irq_parse_raw(9)
• of_irq_parse_one(9)
• of_irq_to_resource(9)
• of_irq_get(9)
• of_irq_get_byname(9)
• of_irq_to_resource_table(9)
• of_irq_init(9)
• of_msi_xlate(9)
• of_msi_map_get_device_domain(9)
• of_msi_get_domain(9)
• of_msi_configure(9)

---

fr fr, that's the whole page — no hidden options, no sneaky environment variables, no exit statuses, no bugs section, nothing. just vibes and one very good little counting function 🌈

---

and that's a wrap, bestie!! 🧚 this one came from the ./drivers/of corner of the tree, dated October 2026, and it's filed under of_irq_count(9) 💖 slay, go count some IRQs, you've got this 👑⭐