megasas_update_device_list(9)

📦 version 7.3.1, in nixpkgs unstable

💅 megasas_update_device_list(9) — Kernel API Manual ✨

okay so this is a page from the Kernel API Manual, and it's called megasas_update_device_list(9). she's a little function with a big job and honestly? she ate. let's get into it 🫶

🌸 NAME 🌸

megasas_update_device_list — update the PD and LD device list from FW after an AEN event notification

like bestie, the firmware just slid into your notifications (that's the AEN event, iykyk) and now the driver's whole device list is out of date. this function is the glow-up. 💖

✨ SYNOPSIS ✨

int megasas_update_device_list (struct megasas_instance *instance , int
event_type );

🎀 ARGUMENTS 🎀

  • instance — Adapter soft state. that's the per-adapter vibe container, literally where all the state lives 🦋
  • event_type — Indicates type of event (PD or LD event). so like… which kind of tea is this: physical drive tea or logical drive tea? both valid, no cap 💅

⭐ RETURN ⭐

Success or failure. that's it, that's the whole mood. it works or it doesn't, and it will let you know 😭

👑 DESCRIPTION 👑

So the whole lewk is this: the function issues DCMDs to the Firmware to update the internal device list in the driver. ✨

And because not every firmware is built the same (main character energy varies, tbh), it's based on the FW support! The driver sends the HOST_DEVICE_LIST or a combination of PD_LIST/LD_LIST_QUERY DCMDs to get the device list. 🔥

ngl this is the part where you just let the firmware talk and trust the process. the driver's not out here guessing — it checks what FW supports first. 🌈

🦋 SEE ALSO 🦋

the kernel file right here, bestie:

./drivers/scsi/megaraid/megaraid_sas_base.c

and literally the entire megaraid_sas cinematic universe, in order, no skips, no shuffle 🎧💜

and that's the whole page, bestie!! mwah 💋

shoutout to the source at ./drivers/scsi/megaraid, dated October 2026, and don't forget the manual name: megasas_update_device_list(9). go read the rest of the series, it's giving lore 💀📚✨

📦 where this page comes from