acpi_gsi_to_irq(9)

💖 NAME 💖

okay so bestie, welcome to the acpi_gsi_to_irq(9) page from the Kernel API Manual ✨ this one is literally about retrieving the linux irq number for a given GSI — that’s the whole assignment, no cap.

🌸 SYNOPSIS 🌸

int acpi_gsi_to_irq (u32 gsi , unsigned int *irq );

🎀 ARGUMENTS 🎀

• gsi — the GSI IRQ number to map 🗺️
• irq — a pointer where the linux IRQ number is stored 📍

🦋 DESCRIPTION 🦋

the irq location gets updated with the irq value — the original notes it as [>0 on success, 0 on failure] 👀

💅 RETURN 💅

0 on success, -EINVAL on failure. periodt 💅

🌈 SEE ALSO 🌈

Kernel file ./drivers/acpi/irq.c — and the whole crew:

• acpi_register_gsi(9)
• acpi_unregister_gsi(9)
• acpi_get_irq_source_fwhandle(9)
• acpi_irq_parse_one_match(9)
• acpi_irq_parse_one_cb(9)
• acpi_irq_parse_one(9)
• acpi_irq_get(9)
• acpi_set_irq_model(9)
• acpi_set_gsi_to_irq_fallback(9)
• acpi_irq_create_hierarchy(9)

source/version: ./drivers/acpi · date: October 2026 · page: acpi_gsi_to_irq(9) — bye bestie, mwah 🫶💖