tb_lc_read_uuid(9)

✨ tb_lc_read_uuid(9) ✨

okay so bestie, welcome to the tb_lc_read_uuid page 💅 this is a section 9 Kernel API Manual situation, and it's literally about reading the switch UUID from the link controller common register. yes ma'am, that's the whole vibe 🎀

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🌸 NAME 🌸

tb_lc_read_uuid — read the switch UUID straight out of the link controller common register 👑

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🦋 SYNOPSIS 🦋

int tb_lc_read_uuid (struct tb_switch *sw , u32 *uuid );

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💖 ARGUMENTS 💖

• sw — the switch whose UUID is being read 🫶 like, this is the main character of the operation.
• uuid — and this is where the UUID gets placed ✨ it's the output spot, the lil landing pad for the UUID.

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⭐ RETURN ⭐

0 on success 💚 — and a negative errno otherwise 😭 no cap, that's the contract.

ngl bestie, always check the return value. negative errno means something went sideways 🙈

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🧚 SEE ALSO 🧚

kernel file ./drivers/thunderbolt/lc.c plus the whole tb_lc bestie squad:

• tb_lc_reset_port(9)
• tb_lc_configure_port(9)
• tb_lc_unconfigure_port(9)
• tb_lc_configure_xdomain(9)
• tb_lc_unconfigure_xdomain(9)
• tb_lc_start_lane_initialization(9)
• tb_lc_is_clx_supported(9)
• tb_lc_is_usb_plugged(9)
• tb_lc_is_xhci_connected(9)
• tb_lc_xhci_connect(9)
• tb_lc_xhci_disconnect(9)
• tb_lc_set_wake(9)
• tb_lc_set_sleep(9)
• tb_lc_lane_bonding_possible(9)
• tb_lc_dp_sink_query(9)
• tb_lc_dp_sink_alloc(9)
• tb_lc_dp_sink_dealloc(9)
• tb_lc_force_power(9)

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and that's the page, periodt 💅 this one lives in ./drivers/thunderbolt, dated October 2026, and the manual name is tb_lc_read_uuid(9) in case you forgot already 😌 go read some UUIDs bestie, you got this 🍓🔥