mpi3mr_setup_isr(9)

📦 version 7.3.1, in nixpkgs unstable

💖 mpi3mr_setup_isr(9) — the Kernel API Manual glow-up 💖

okay so bestie, welcome to the Kernel API Manual entry for mpi3mr_setup_isr, and no cap, this one is a little legend. It's the function that gets your controller's interrupts actually wired up so the whole thing can start talking. Very main character energy, very "the party doesn't start till I walk in" 🎀

✨ NAME ✨

mpi3mr_setup_isr — Setup ISR for the controller 🔥

(that's Interrupt Service Routine, iykyk. she's the one who answers when the hardware knocks 💅)

🌸 SYNOPSIS 🌸

int mpi3mr_setup_isr (struct mpi3mr_ioc *mrioc , u8 setup_one );

🦋 ARGUMENTS 🦋

  • mrioc — the adapter instance reference, like... the controller's whole vibe and identity. hand her over and she knows who she is 💜
  • setup_one — "request one IRQ or more". literally that's the whole ask: one vector, or all of them, your call bestie 🙈

⭐ DESCRIPTION ⭐

So what she does, like, in one breath: she allocates the IRQ vectors, and then she calls mpi3mr_request_irq to set up the ISR. that's it, that's the paragraph, but honestly it's kind of the whole personality 🫶

the way that one function call to mpi3mr_request_irq is doing so much heavy lifting for the entire controller's ability to hear anything? obsessed 💀

🌈 RETURN 🌈

  • 0 on success — slayed, we're so back 🎉
  • non zero on failures — and that's your cue that something went sideways, no cap 😭

👑 SEE ALSO 👑

the kernel file ./drivers/scsi/mpi3mr/mpi3mr_fw.c, plus literally the entire extended friend group (she does not go anywhere alone, periodt). presenting, in order, the full squad:

and yes, mpimr_initialize_reply_sbuf_queues(9) really is spelled like that in the original — not me, don't come for me 🙈 keep it exactly as-is.

💫 cute little sign-off 💫

this icon lives in ./drivers/scsi/mpi3mr, it's dated October 2026, and it goes by mpi3mr_setup_isr(9) 🦋 go set up those IRQs bestie, you've got this 💖✨

📦 where this page comes from