hsi_unregister_port_event(9)

💅 hsi_unregister_port_event(9)

okay bestie, welcome to the Kernel API Manual ✨ this one's a little function from the kernel's HSI world, and honestly? she's giving "polite goodbye energy" 🎀

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🌸 NAME 🌸

hsi_unregister_port_event — stop receiving port events for a client 🛑

Like, you're telling the kernel "girl, I'm done, no more event texts please" 💅

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✨ SYNOPSIS ✨

int hsi_unregister_port_event (struct hsi_client *cl );

That's the whole thing — one argument, one int coming back at you 🫶

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🎀 ARGUMENTS 🎀

• cl — the HSI client that wants to stop receiving port events 🙈 literally the client saying "take me off the list"

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💖 DESCRIPTION 💖

So here's the vibe check: clients should call this function before releasing their associated port. Order matters, bestie — unregister the events first, then let go of the port 🔥

no cap, do it in that order: hsi_unregister_port_event first, port release after. don't do it backwards 🫠

And the return situation? It returns -errno on error, or 0 on success. That's it, that's the whole personality 😭 zero on a good day, negative when the kernel's like "mmm, no" 💀

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🦋 SEE ALSO 🦋

Kernel file ./drivers/hsi/hsi_core.c — and the whole friend group 💜:

• hsi_port_unregister_clients(9)
• hsi_unregister_controller(9)
• hsi_register_controller(9)
• hsi_register_client_driver(9)
• hsi_put_controller(9)
• hsi_alloc_controller(9)
• hsi_free_msg(9)
• hsi_alloc_msg(9)
• hsi_async(9)
• hsi_claim_port(9)
• hsi_release_port(9)
• hsi_register_port_event(9)
• hsi_event(9)
• hsi_get_channel_id_by_name(9)

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sign-off szn 🌈✨ this lil page lives in ./drivers/hsi, dated October 2026, and it's officially titled hsi_unregister_port_event(9) — go off, unregister those events, and stan a clean teardown for me 👑💅🍓