devm_platfo...rqs_affinity(9)

📦 version 7.3.1, in nixpkgs unstable

💖 devm_platform_get_irqs_affinity(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ this one is all about devm_platform_get_irqs_affinity, and no cap, it's a little baddie that gets you a whole set of IRQs for a device using an interrupt affinity descriptor. let's get into it 🎀

🌸 NAME 🌸

devm_platform_get_irqs_affinity — the devm method that grabs you a set of IRQs for a device using an interrupt affinity descriptor. literally that's the whole vibe 🦋

✨ SYNOPSIS ✨

int devm_platform_get_irqs_affinity (struct platform_device *dev ,
struct irq_affinity *affd , unsigned int minvec , unsigned int maxvec ,
int **irqs );

like, that's the whole signature bestie, copy it exactly or the compiler will absolutely read you 💅

🫶 ARGUMENTS 🫶

  • dev — platform device pointer. the main character, the device in question 👑
  • affd — affinity descriptor. this is the blueprint for how the IRQ affinity gets set up 💖
  • minvec — minimum count of interrupt vectors. the floor, the bare minimum, the "at least this many" 🍓
  • maxvec — maximum count of interrupt vectors. the ceiling, the "no more than this" ⭐
  • irqs — pointer holder for IRQ numbers. you hand it a spot and it puts the IRQ numbers there 🙈

💜 DESCRIPTION 💜

so what does it actually do? it gets a set of IRQs for a platform device, and then it updates the IRQ affinity according to the affinity descriptor you passed in. that's it, that's the whole flex 🔥

(also ngl, the original source spells it "afffinty" with three fs — iconic typo behavior, but the meaning is 100% "affinity", don't come for me 😭)

🌈 RETURN 🌈

  • number of vectors on success ✅ slay
  • a negative error number on failure 💀 not slay

🧚 SEE ALSO 🧚

everything else in the kernel family, bestie — go read these if you're obsessed like me:

Kernel file ./drivers/base/platform.c

and that's the whole page bestie, mwah 💋 this little icon came from ./drivers/base, dated October 2026 — see you in the next manpage, love u bye 🎀💖✨

📦 where this page comes from