mpi3mr_expander_phy_control(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 mpi3mr_expander_phy_control — expander phy control 🌸

okay so bestie, welcome to the kernel API manual page for mpi3mr_expander_phy_control, straight out of the mpi3mr crew 💅 this one's a lil function that pokes at an expander's phy, and honestly? iconic behavior. let's get into it 🫶

✨ SYNOPSIS ✨

int mpi3mr_expander_phy_control (struct mpi3mr_ioc *mrioc , struct
       sas_phy *phy , u8 phy_operation );

yep, that's the whole signature, no cap — three args in, an int out 🔥

🎀 ARGUMENTS 🎀

  • mrioc — the adapter instance reference, like your main character's ID badge 💳
  • phy — the SAS transport layer phy object, the actual phy baddie we're doing stuff to 🦋
  • phy_operation — the phy operation to be executed, i.e. what exactly we're asking that phy to do, ngl this is the important one 👑

💖 DESCRIPTION 💖

so here's the vibe: this function issues an SMP passthru phy control request to execute a specific phy operation for a given expander device ✨ that's it, that's the whole thing — it's basically the messenger that walks your phy operation request over to the expander so it can actually happen. lowkey essential, highkey underappreciated 🌈

⭐ RETURN ⭐

  • 0 for success 🎉
  • non-zero for failure 😭 (yes, that's all it says — go forth and check your return values, bestie)

👑 SEE ALSO 👑

the whole friend group, fr fr — go say hi to all of these 🫶

and that's the page, periodt 💜 this lil slice of kernel lore lives in ./drivers/scsi/mpi3mr, dated October 2026 — mwah, go read the source, ily, bye 🎀✨

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