mpi3mr_pcier...ror_detected(9)

📦 version 7.3.1, in nixpkgs unstable

💅 NAME 💅

okay so welcome to the Kernel API Manual, bestie — this page is mpi3mr_pcierr_error_detected, the PCI error detected callback. yeah. that one. the "your PCIe link is going through it rn" alarm 🚨

✨ SYNOPSIS ✨

pci_ers_result_t mpi3mr_pcierr_error_detected (struct pci_dev *pdev ,
pci_channel_state_t state );

🫶 ARGUMENTS 🫶

  • pdev — the PCI device instance. like, the actual device in question, the main character of this whole crisis 🎀
  • state — the channel state. this is the vibe check that tells the driver what kind of situation we're in 💀

🌸 DESCRIPTION 🌸

so the PCI error recovery driver calls this function, right? and based on the state that gets passed in, the driver decides what actions to recommend back to the PCI driver. it's giving "triage nurse energy" ngl 🩺

and here's the universal rule, periodt: for all of the states, if there's no valid mrioc or scsi host references in the PCI device, this function will return the result as disconnect. no valid refs = no valid refs, we're out 🫡

now for the specific states, one at a time:

  • For normal state — this function will return the result as can recover. all good, we live to fight another day 💖
  • For frozen state — okay so this one's the dramatic one 😭 this function will block for any pending controller initialization or re-initialization to complete, stop any new interactions with the controller, and return status as reset required. like it literally waits and then pulls the plug on new business. iconic honestly.
  • For permanent failure state — this function will mark the controller as unrecoverable and return status as disconnect. yeah. it's over. it's giving end of an era 💀

🔥 RETURN 🔥

PCI_ERS_RESULT_NEED_RESET or CAN_RECOVER or DISCONNECT, all depending on the controller state. pick your fighter based on the vibe ✨

🦋 SEE ALSO 🦋

first up, the kernel file itself lives at ./drivers/scsi/mpi3mr/mpi3mr_os.c — go read it, it's right there 📖

and now the whole entire crew, no one left behind, we love a full squad 🫶:

and that's the whole page, bestie 💜 this one came out of ./drivers/scsi/mpi3mr back in October 2026 — go touch some grass, then go read your kernel logs 🌈⭐

📦 where this page comes from