DFL_FPGA_FME_PORT_RELEASE(9)

📦 version 7.3.1, in nixpkgs unstable

💅 DFL_FPGA_FME_PORT_RELEASE

okay so bestie, welcome to the Kernel API Manual (that's section 9, iykyk) — this is the whole entire lore on DFL_FPGA_FME_PORT_RELEASE, and honestly? iconic behavior only. let's get into it 🎀

✨ NAME ✨

DFL_FPGA_FME_PORT_RELEASE — no cap, it's literally this ioctl right here:

_IOW(DFL_FPGA_MAGIC, DFL_FME_BASE + 1, int port_id)

that's the whole vibe. it's an _IOW ioctl, it's got DFL_FPGA_MAGIC, it lives at DFL_FME_BASE + 1, and it takes an int port_id as its argument. remember that port_id bestie, because the description is about to make it the main character 🫶

🌸 SYNOPSIS 🌸

DFL_FPGA_FME_PORT_RELEASE

that's it. that's the call. no extra params in the synopsis, she's minimal, she's clean, she ate 💅

🦋 DESCRIPTION 🦋

so basically: the driver releases the port, and it does that per Port ID provided by caller. like, you hand it a port_id, it releases that port. you're the caller, you're providing it, you're in charge. slay 🔥

⭐ RETURN ⭐

  • 0 on success — we love a win 💖
  • -errno on failure — 😭 that's the negative errno life, but at least it tells you why, fr fr

🌈 SEE ALSO 🌈

okay this is the friend group, the whole squad, the group chat, and they're all linked so you can go read them too:

Kernel file ./include/uapi/linux/fpga-dfl.h — that's the source of truth bestie, go look at it 👑

like, DFL_FPGA_FME_PORT_ASSIGN(9) is literally the sibling of this one — release and assign, they're giving paired-set energy 🧚

okay that's the page!! this little number lives in ./include/uapi/linux and it's dated October 2026, brought to you by the Kernel API Manual ✨ bye bestie, go release some ports responsibly 💜🎀

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