of_irq_get(9)

🌸 NAME 🌸

okay so this page is of_irq_get(9), straight out of the Kernel API Manual, and it’s literally about decoding a node’s IRQ and returning it as a Linux IRQ number. bestie, that’s the whole vibe. 💅✨

✨ SYNOPSIS ✨

int of_irq_get (struct device_node *dev , int index );

🎀 ARGUMENTS 🎀

• dev — pointer to device tree node 🫶
• index — zero-based index of the IRQ 🎯

💖 RETURN 💖

• Linux IRQ number on success 👑
• 0 on the IRQ mapping failure 🫠
• -EPROBE_DEFER if the IRQ domain is not yet created ⏳
• error code in case of any other failure 💀

no cap, that return list is giving “it depends” energy, so read it carefully before you spiral. 😭

🦋 SEE ALSO 🦋

Kernel file ./drivers/of/irq.c and these iconic little references:

• 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_byname(9)
• of_irq_count(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)

okay bye bestie 💅 this page lives under source/version ./drivers/of, dated October 2026 — go slay those IRQ decodes 🫶✨🌸