mpi3mr_pcierr_mmio_enabled(9)

📦 version 7.3.1, in nixpkgs unstable

💅 NAME 💅

mpi3mr_pcierr_mmio_enabled — the PCI error recovery callback, bestie. Yes it's a mouthful, no we're not shortening it, it's iconic and we respect it.

This is page mpi3mr_pcierr_mmio_enabled(9) from the Kernel API Manual, and honestly? She's a little niche but she serves.

✨ SYNOPSIS ✨

pci_ers_result_t mpi3mr_pcierr_mmio_enabled (struct pci_dev *pdev );

That's the whole signature. Short king. 💅

🎀 ARGUMENTS 🎀

  • pdev — the PCI device instance. That's it, that's the one (1) argument, and she's carrying the entire function on her back.

🌸 DESCRIPTION 🌸

Okay so here's the tea: this function does not get called whenever it wants. It's called only if mpi3mr_pcierr_error_detected returns PCI_ERS_RESULT_CAN_RECOVER. Like, that's the vibe check it has to pass first. No CAN_RECOVER, no callback. Periodt.

So if you're wondering "why isn't my mmio_enabled callback firing"— go check what error_detected said first, iykyk. 🫶

🔥 RETURN 🔥

She returns a pci_ers_result_t, and it's a whole fork in the road:

  • PCI_ERS_RESULT_DISCONNECT — when the controller is unrecoverable 😭 OR when the shost/mrioc reference cannot be found 💀. Either way, it's giving disconnect energy.
  • else — returns PCI_ERS_RESULT_RECOVERED ✨ slay, we recovered.
fr fr, those are the only two outcomes. No in-between, no maybe, no "it depends". Two results, that's the menu.

👑 SEE ALSO 👑

First up, the actual source file, no cap:

  • Kernel file ./drivers/scsi/mpi3mr/mpi3mr_os.c

And now the full friend group — every single one of these, and yes I'm listing all of them because they all deserve their moment 💖:

Like I said. All of them. 🫶

🦋 the lil sign-off 🦋

This whole thing lives in ./drivers/scsi/mpi3mr, and it's stamped October 2026 — yes, future girlie behavior, we love to see it 🌈⭐. Manual page mpi3mr_pcierr_mmio_enabled(9), out. Go read your PCI error recovery docs, drink some water, and remember: check what error_detected returned first 💜🧚‍♀️

📦 where this page comes from