mpi3mr_eh_bus_reset(9)

📦 version 7.3.1, in nixpkgs unstable

💅 mpi3mr_eh_bus_reset — like, the bus reset error handling callback, bestie

okay so this is mpi3mr_eh_bus_reset(9) from the Kernel API Manual, and it's genuinely one of those little functions that does the vibe check before the big dramatic move. Let's get into it 🫶

✨ NAME ✨

mpi3mr_eh_bus_reset — the Bus reset error handling callback. that's it, that's the whole name, and honestly? iconic. 👑

🌸 SYNOPSIS 🌸

int mpi3mr_eh_bus_reset (struct scsi_cmnd *scmd );

lowkey the whole signature fits on one line, which is giving "I don't overcomplicate things" energy. we love a concise king. 💖

🎀 ARGUMENTS 🎀

  • scmd — a SCSI command reference. that's your one (1) input, bestie. it's the handle to the SCSI command, and that's all you're getting. ✨

🦋 DESCRIPTION 🦋

so what does it actually do? it checks whether pending I/Os are present for the RAID volume — and if there aren't any, then there's no need to reset the adapter. periodt. 💀

like, the function is basically doing a headcount before it commits to the whole reset situation. nobody's waiting on I/O? then why are we even resetting the adapter, girl. we're not. the way that it just saves everyone the drama. 🙈

⭐ RETURN ⭐

  • SUCCESS if the reset actually succeeded ✨
  • FAILED otherwise 😭

no in-between, no "it depends", just the two. iykyk.

🌈 SEE ALSO 🌈

first up, the actual kernel file it lives in, because we always cite our sources:

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

and now the extended friend group — literally everyone it hangs out with, no gateskeeping, all of them tagged (9):

look at that list. that's a whole friend group chat and you're invited to all of it. 🔥

okay that's the whole page, bestie — no cap, nothing skipped 💜

this little beauty lives over at ./drivers/scsi/mpi3mr and the docs say October 2026, so mark your calendar, and remember the title you're sliding into a search bar is mpi3mr_eh_bus_reset(9). slay, go check your pending I/Os before you reset anything. 🧚✨

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