_base_async_event(9)

📦 version 7.3.1, in nixpkgs unstable

💅 _base_async_event(9) 💅

okay so bestie, welcome to the Kernel API Manual, section 9 — we love a numbered era. this page is all about _base_async_event, and it's giving "tiny function, huge responsibility." no cap.

🌸 NAME 🌸

_base_async_event — main callback handler for firmware asyn events.

and yes, asyn is literally spelled like that. iykyk, we don't edit the lore. 🫶

✨ SYNOPSIS ✨

the whole signature, verbatim, don't come for the spacing:

u8 _base_async_event (struct MPT3SAS_ADAPTER *ioc , u8 msix_index , u32
reply );

🎀 ARGUMENTS 🎀

three args, three little besties:

  • ioc — per adapter object. that's your adapter baddie.
  • msix_index — MSIX table index supplied by the OS. the OS handed it over, so it's official.
  • reply — reply message frame(lower 32bit addr). lower 32 bits specifically, don't forget the lower part.

💖 RETURN 💖

here's the vibe check:

  • returning 1 means mf should be freed from _base_interrupt
  • returning 0 means the mf is freed from this function.

so like… who's freeing the mf? the return value tells you. main character energy fr fr. ✨

🌈 SEE ALSO 🌈

okay so the whole friend group showed up. first, the kernel file itself:

  • Kernel file ./drivers/scsi/mpt3sas/mpt3sas_base.c

and the rest of the squad, all of them, no skips, no shortcuts:

that's the page, bestie 💖 it lives in ./drivers/scsi/mpt3sas and it's dated October 2026 — go forth and return the right thing 💅✨🫶

📦 where this page comes from