mei_cl_dma_unmap(9)

📦 version 7.3.1, in nixpkgs unstable

💅 mei_cl_dma_unmap(9) 💅

Okay bestie, welcome to the Kernel API Manual ✨ — this is the page for mei_cl_dma_unmap, and yes it's a tiny page, but it's our tiny page and we're gonna treat it with the respect it deserves 🎀

🌸 NAME 🌸

mei_cl_dma_unmap — send client dma unmap request

Like, that's literally the whole job. It sends a dma unmap request for a client. No cap, that's it. 🦋

🦋 SYNOPSIS 🦋

int mei_cl_dma_unmap (struct mei_cl *cl , const struct file *fp );

She takes two args and returns an int. Simple. Clean. Iconic. 💅

🎀 ARGUMENTS 🎀

  • cl — host client 👑 this is the client we're doing the dma unmap thing for.
  • fp — pointer to file structure 📁 literally a pointer to the file structure, keep it handy.

💖 DESCRIPTION 💖

Locking: called under "dev->device_lock" lock 🔒

That's it. That's the description. Not me being lazy — the original manpage is genuinely this short, and I refuse to invent lore that isn't there 🙈 Just know: if you're calling this, you're already holding dev->device_lock, periodt.

✨ RETURN ✨

0 on such and error otherwise.

Yes, that's verbatim what the page says — "on such and error otherwise" 🤭 I'm not gonna "fix" it, I'm just gonna deliver it to you exactly like that, bestie. 0 = good vibes, anything else = error 💀

🫶 SEE ALSO 🫶

Kernel file ./drivers/misc/mei/client.c, plus this whole friend group right here:

Like, that's the whole squad 🫂 iykyk 🌈

💫 and that's the page!! 💫

Cute lil sign-off for the credits stans: this one lives in ./drivers/misc/mei, and the version/date stamp says October 2026 — so yeah, future-coded of it 📅✨ mwah, go unmap some dma bestie 💜

📦 where this page comes from