mpt3sas_ctl_event_callback(9)

📦 version 7.3.1, in nixpkgs unstable

💅 NAME 💅

okay so bestie, welcome to the Kernel API Manual ✨ — this page is all about mpt3sas_ctl_event_callback, which is literally the firmware event handler (and yes, it gets called at ISR time, no cap 🫶).

🌸 SYNOPSIS 🌸

u8 mpt3sas_ctl_event_callback (struct MPT3SAS_ADAPTER *ioc , u8
msix_index , u32 reply );

🎀 ARGUMENTS 🎀

  • ioc — the per adapter object 🦋 (your main character struct, fr)
  • msix_index — the MSIX table index, supplied by the OS 👑
  • reply — the reply message frame (lower 32bit addr) 💌

⭐ CONTEXT ⭐

interrupt. that's it, that's the context. 😭 you're in interrupt context, bestie — act accordingly.

🔥 DESCRIPTION 🔥

So the way that this function works is honestly so chill: it merely adds a new work task into ioc->firmware_event_thread 💫. That's the whole vibe check.

Then those tasks get worked from _firmware_event_work in user context — so the heavy lifting happens later, outside the interrupt, and that's the iconic part 🧚✨

💜 RETURN 💜

  • 1 — meaning mf should be freed from _base_interrupt
  • 0 — means the mf is freed from this function

so like, the return value tells you who is doing the freeing, iykyk 💅

🌈 SEE ALSO 🌈

Kernel file ./drivers/scsi/mpt3sas/mpt3sas_ctl.c

okay that's the whole lore dump 🌸 and before you go — this page came from the source ./drivers/scsi/mpt3sas, dated October 2026, and bestie, it's part of the Kernel API Manual. slay, that's a wrap 💅✨🎀

📦 where this page comes from