pcc_mbox_free_channel(9)

🌸 pcc_mbox_free_channel(9) — from the Kernel API Manual, bestie ✨

Okay so picture this: it's a page in the Kernel API Manual, the title is pcc_mbox_free_channel(9), and it's literally the "okay bye, thanks for the channel" page. Very short, very iconic, very important. Let's get into it 💅

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💖 NAME 💖

pcc_mbox_free_channel — Clients call this to free their Channel.

That's it, that's the whole vibe. You (the client) call it, and your Channel gets freed. Cleanup era 🎀

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✨ SYNOPSIS ✨

void pcc_mbox_free_channel (struct pcc_mbox_chan *pchan );

Note the void — nothing comes back to you, no return value, no drama, she just does the thing and dips 🦋 (and yes, copy it exactly like that, space before the closing paren and all, that's canon).

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🫶 ARGUMENTS 🫶

• pchan — Pointer to the PCC mailbox channel as returned by pcc_mbox_request_channel. So like… you don't just make one up out of nowhere, okay? This is the same pointer that request call handed you earlier. You got it from pcc_mbox_request_channel, you give it back here. Matching set, no cap 💖

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👑 SEE ALSO 👑

Kernel file ./drivers/mailbox/pcc.c, plus the whole friend group:

• struct pcc_chan_reg(9)
• struct pcc_chan_info(9)
• pcc_map_interrupt(9)
• pcc_mbox_irq(9)
• pcc_mbox_request_channel(9)
• pcc_send_data(9)
• pcc_startup(9)
• pcc_shutdown(9)
• parse_pcc_subspace(9)
• pcc_parse_subspace_irq(9)
• pcc_parse_subspace_db_reg(9)
• pcc_parse_subspace_shmem(9)
• acpi_pcc_probe(9)
• pcc_mbox_probe(9)

(There's also struct pcc_chan_reg(9) and struct pcc_chan_info(9) listed as struct pages in there, so go read those too, main character energy ⭐)

Lowkey reminder: if your pointer didn't come from pcc_mbox_request_channel, that's a you problem and things may get weird. Free the channel you actually requested, bestie 🙈

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Alright that's the whole page! Signing off with the deets from the bottom of the original: this one lives under ./drivers/mailbox and it's dated October 2026 🗓️ — go free those channels responsibly, love u, bye! 💜🌈🍓