ks8851_irq(9)

📦 version 7.3.1, in nixpkgs unstable

✨ ks8851_irq ✨

okay so bestie, welcome to the ks8851_irq page — this is a section 9 Kernel API Manual entry, so it's the ~dev side~ of the docs, not the "how do I run ls" side. Buckle up 🎀

🌸 NAME 🌸

ks8851_irq — the IRQ handler that deals with interrupt requests 💅

like, the interrupt handler. the one that answers the door when the hardware knocks. iconic behavior honestly.

🦋 SYNOPSIS 🦋

irqreturn_t ks8851_irq (int irq , void *_ks );

no cap, that's the whole signature. copy it exactly, spaces and all, because C is picky and we respect her 🫶

💖 ARGUMENTS 💖

  • irq — the IRQ number 🎀 like, which interrupt line is hollering at us.
  • _ks — the cookie 🍪 yep. that's genuinely what it's called. it's the little pointer that gets passed back to us so we know which device we're dealing with.

🔥 DESCRIPTION 🔥

so this handler gets invoked when the IRQ line asserts, and its whole job is to figure out what actually happened 👑

and here's the thing — we cannot allow ourselves to sleep in HARDIRQ context. not allowed. absolutely not. so this handler runs in thread context instead. slay for not blocking the whole kernel, honestly 🧚

what it does, in order:

  1. read the interrupt status ✨
  2. work out what needs to be done 💅
  3. clear any of the interrupts that are not needed 🎀

that's it. that's the vibe. read, think, tidy up. main character energy fr fr 🌈

🌟 SEE ALSO 🌟

the kernel file this lives in, for the curious:

  • Kernel file `./drivers/net/ethernet/micrel/ks8851_common.c`

and the whole bestie squad of related functions (go read them, they're all right there 👀):

okay that's the whole page, ily, go read some source code 💜

source/version: ./drivers/net/ethernet/micrel · dated October 2026 · page: ks8851_irq(9) ⭐

📦 where this page comes from