mc_send_command(9)

📦 version 7.3.1, in nixpkgs unstable

💅 mc_send_command(9) — like, the Kernel API Manual era 🎀

okay bestie, welcome to Kernel API Manual, the mc_send_command(9) page specifically — this is the one you're gonna read like three times and then finally get it, promise 🫶

✨ NAME ✨

mc_send_command — sends a command to the MC device using the given MC I/O object 🌸

like, that's literally its whole job and it does it slayfully.

🔥 SYNOPSIS 🔥

int mc_send_command (struct fsl_mc_io *mc_io , struct fsl_mc_command *cmd );

two args, one int coming back at you, iconic lineup tbh 👑

🎀 ARGUMENTS 🎀

  • mc_io — the MC I/O object to be used. yes it's the one you're supposed to pass in, don't get cute and skip it 🙈
  • cmd — the command to be sent. the actual thing you wanna yeet at the device ✨

💖 DESCRIPTION 💖

returns '0' on success — that's the good ending, the main character energy result 🎉 — and an error code otherwise 😭. so like, always check your return value, ngl, it's giving "one line that saves your whole debugging session" fr fr.

👑 SEE ALSO 👑

the kernel file ./drivers/bus/fsl-mc/mc-sys.c (yes, that's the whole path, write it down bestie 📝), plus the whole friend group:

they're all in the same lore, go read them too, you'll thank me 💜

and that's the page!! shipped from ./drivers/bus/fsl-mc, dated October 2026 — a whole era 🦋 hope this helped, mwah, good luck with your kernel 💅⭐

📦 where this page comes from