irq_resolve_mapping(9)

✨ irq_resolve_mapping(9) ✨

okay bestie, welcome to the Kernel API Manual 💖 this is the page for irq_resolve_mapping(9), and it is lowkey giving “find the interrupt descriptor” main character energy. no cap.

---

🌸 NAME 🌸

irq_resolve_mapping — Find a linux irq from a hw irq number. 💅

---

🦋 SYNOPSIS 🦋

struct irq_desc * irq_resolve_mapping (struct irq_domain *domain ,
irq_hw_number_t hwirq );

---

🎀 ARGUMENTS 🎀

• domain — the domain owning this hardware interrupt 👑
• hwirq — the hardware irq number in that domain space 🔥

---

💖 RETURN 💖

Interrupt descriptor — that’s the whole vibe. ✨

---

🌈 SEE ALSO 🌈

peep the kernel file ./include/linux/irqdomain.h, plus these iconic little references:

• struct irq_fwspec(9)
• struct irq_fwspec_info(9)
• struct irq_domain_ops(9)
• struct irq_domain(9)
• struct irq_domain_info(9)
• irq_domain_create_linear(9)
• irq_create_mapping(9)
• irq_find_mapping(9)
• irq_domain_create_hierarchy(9)
• irq_domain_alloc_irqs(9)

---

that’s the page, bestie 🫶 this cutie comes from ./include/linux, dated October 2026, and it’s the irq_resolve_mapping(9) manual entry — mwah 💋