dma_port_free(9)

💅 dma_port_free(9) — Kernel API Manual

okay so bestie, welcome to the little corner of the kernel docs that deals with Thunderbolt DMA control ports ✨ this one is short but she's iconic, so let's get into it 🫶

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🌸 NAME 🌸

dma_port_free — Release DMA control port structure 🎀

like, you allocated one of these bad boys, and now you're done with it, so you're letting it go. very "it's not you it's me" of you, honestly 💅

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✨ SYNOPSIS ✨

void dma_port_free (struct tb_dma_port *dma );

that's it. one argument, returns nothing (void), does the thing. no cap 🙈

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🦋 ARGUMENTS 🦋

• dma — the DMA control port 💖 (this is your struct tb_dma_port *, the one you're releasing)

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💀 SEE ALSO 💀

the kernel file ./drivers/thunderbolt/dma_port.c, plus these absolute main characters:

• struct tb_dma_port(9)
• dma_port_alloc(9)
• dma_port_flash_read(9)
• dma_port_flash_write(9)
• dma_port_flash_update_auth(9)
• dma_port_flash_update_auth_status(9)
• dma_port_power_cycle(9)

iykyk — if you're freeing a port you almost definitely met dma_port_alloc(9) first, so go say hi 🌈

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fr fr though: if you were hoping for flags, options, return values, or exit statuses on this one… there are literally none in the docs. she's a one-liner queen. don't go inventing parameters, bestie 😭

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mwah 💋 that's the whole page — courtesy of the ./drivers/thunderbolt directory, dated October 2026, and shouting out the Kernel API Manual it lives in 👑 slay 🦋💜