acpi_set_gsi...irq_fallback(9)

okay so bestie, welcome to the Kernel API Manual 💖 this page is all about acpi_set_gsi...irq_fallback(9) — yes, the dots are part of the title and we are keeping them exactly like that, periodt ✨

🌸 NAME 🌸

acpi_set_gsi_to_irq_fallback — register a GSI transfer callback to fallback to arch specified implementation. That’s the whole assignment: it’s the registration moment for the fallback handler 🫶

✨ SYNOPSIS ✨

void acpi_set_gsi_to_irq_fallback (u32 (*fn)(u32) );

🎀 ARGUMENTS 🎀

• fn — arch-specific fallback handler. Literally the handler that is arch-specific, no cap 💅

🔥 SEE ALSO 🔥

There’s a kernel file at ./drivers/acpi/irq.c, and it comes with this whole iconic friend group:

• acpi_gsi_to_irq(9)
• 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_irq_create_hierarchy(9)

And that’s the page, bestie! Source/version: ./drivers/acpi · date: October 2026 · footer title: acpi_set_gsi...irq_fallback(9). Facts stay facts, even when the vibe is immaculate 💖🌈👑