irq_get_default_domain(9)

📦 version 7.3.1, in nixpkgs unstable

✨ irq_get_default_domain(9) ✨

okay so bestie, we're in the Kernel API Manual today and the function on the agenda is irq_get_default_domain — yes that's the section 9 one, the kernel-internals girlies know 💅

🌸 SYNOPSIS 🌸

struct irq_domain * irq_get_default_domain (void );

literally just call it, no args, no drama, and it hands you back a struct irq_domain *. slay.

🎀 ARGUMENTS 🎀

  • void — no arguments. nothing. zero. empty list. it's giving minimalist icon behavior ✨

🦋 RETURN 🦋

it returns the default domain, if any. that "if any" is doing heavy lifting ngl — sometimes there just isn't one, and that's a whole vibe check you have to handle yourself 🫶

💜 DESCRIPTION 💜

okay so here's the tea, and I need you to listen: modern code should never use this. not "probably shouldn't" — never. periodt. 💀

this one is strictly for systems that cannot implement a firmware->fwnode mapping (which both DT and ACPI provide). so like, if your platform can do DT or ACPI, congrats, you have no business here, go home, use the normal path 💅

fr fr — treat this as the legacy backdoor for the platforms that just can't do the mapping thing. not your everyday tool. 🙈

🌈 SEE ALSO 🌈

Kernel file ./kernel/irq/irqdomain.c — and here's the entire friend group, no one left out:

and that's the whole page, bestie — no cap, that's everything 🧚

cute little sign-off moment: this little number lives in ./kernel/irq, dated October 2026, and it's part of the Kernel API Manual. mwah 💋 🍓
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