cros_ec_cmd_xfer_status(9)

📦 version 7.3.1, in nixpkgs unstable

💖 cros_ec_cmd_xfer_status(9) 💖

okay so this is a page from the Kernel API Manual, and honestly bestie, it's a whole little function with main character energy. Sit down, hydrate, let's get into it 🫶

✨ NAME ✨

cros_ec_cmd_xfer_status — literally the function you call to send a command to the ChromeOS EC. that's the whole vibe. 💅

🌸 SYNOPSIS 🌸

int cros_ec_cmd_xfer_status (struct cros_ec_device *ec_dev , struct
       cros_ec_command *msg );

she takes two things and gives you back an int, no cap ✨

🎀 ARGUMENTS 🎀

  • ec_dev — the EC device. like, the actual guy you're talking to 🦋
  • msg — the message to write. the thing you wanna say to him 💌

💫 DESCRIPTION 💫

Call this to send a command to the ChromeOS EC. periodt.

and like, actually call this one — not the EC's cmd_xfer callback directly, bestie. lowkey that's the whole point of this wrapper and the docs are being so serious about it 🙈

the tea is: it only returns a success status if both things went down, and you need both, no exceptions:

  1. the command was transmitted successfully ✅
  2. the EC replied with success status ✅

two yeses or it's a no. that's the vibe check 🔥

👑 RETURN 👑

  • >=0 — the number of bytes transferred. she ate and left crumbs 💅
  • <0 — a Linux error code. 😭 it's giving sad girl hours, go check your errno

🌈 SEE ALSO 🌈

Kernel file ./drivers/platform/chrome/cros_ec_proto.c — that's where she lives, iykyk ⭐

and the whole friend group, all of them, here we go:

like an entire group chat of EC functions, and they're all iconic in their own way 🧚

ngl, the <bold>-worthy takeaway here: use the wrapper, check both the transfer and the EC's reply, and don't go poking cmd_xfer yourself. 💀

okay that's the page!! mwah 💖 this manual page came to us from the ./drivers/platform/chrome directory and it's dated October 2026 — slay, putting that in my calendar 🗓️✨ byeee 🦋💜

📦 where this page comes from