scmi_devm_protocol_get(9)

📦 version 7.3.1, in nixpkgs unstable

💅 scmi_devm_protocol_get(9) — Kernel API Manual 🎀

okay so bestie, welcome to the group chat. this page lives in the Kernel API Manual and it's about scmi_devm_protocol_get — literally the devres-managed way to grab protocol operations and the handle that comes with them. let's get into it 💖

✨ NAME ✨

scmi_devm_protocol_get — Devres managed get protocol operations and handle

🦋 SYNOPSIS 🦋

const void * scmi_devm_protocol_get (struct scmi_device *sdev , u8 protocol_id , struct scmi_protocol_handle **ph );

🌸 ARGUMENTS 🌸

  • sdev — a reference to an scmi_device whose embedded struct device is gonna be used for devres accounting. yeah, it's that device's vibes we're putting on the tab 💳
  • protocol_id — the protocol being requested. which one do you want, bestie?
  • ph — a pointer reference used to pass back the associated protocol handle. it's an out-param, so it hands you the handle on the way out 🫶

👑 DESCRIPTION 👑

okay so here's what's happening. this gets hold of a protocol, accounting for its usage, and eventually triggers its initialization. then it returns the protocol-specific operations and the related protocol handle — and that handle is the one that'll be used as the first argument in most of the protocol's operations methods. main character energy for real 👑

and here's the actual slay: it's a devres based managed method. so the protocol hold gets released automatically — and possibly de-initialized on the last user — once the SCMI driver that owns the scmi_device is unbound from it. no manual cleanup, no cap, it just handles itself 💅

🔥 RETURN 🔥

a reference to the requested protocol operations, or an error. and bestie, you must check it for errors — caller's job, fr fr. don't be out here assuming it worked 😭

🌈 SEE ALSO 🌈

this is the whole friend group, no one gets left out:

and that's the whole page, bestie! 💜 this little gem lives over in ./drivers/firmware/arm_scmi, it's dated October 2026, and you can find it filed under scmi_devm_protocol_get(9). go check your errors and stay iconic ✨🦋🍓

📦 where this page comes from