tb_lc_reset_port(9)

💖 NAME 💖

Okay bestie, welcome to the tb_lc_reset_port(9) page from the Kernel API Manual! 👑 This function is literally “Trigger downstream port reset through LC” — that’s the whole vibe. ✨

✨ SYNOPSIS ✨

int tb_lc_reset_port (struct tb_port *port );

🎀 ARGUMENTS 🎀

• port — the port that is reset. It’s the struct tb_port *port from the synopsis, bestie 🫶.

🦋 DESCRIPTION 🦋

So what does it do? It triggers downstream port reset through link controller registers. That’s the main character move 💅.

But hear me out: it only supports non-USB4 routers with link controller — and yes, that’s Thunderbolt 2 and Thunderbolt 3 🧚. No cap, that’s the whole compatibility situation.

🔥 RETURN 🔥

• It returns 0 on success — slay, we love a clean win ✅.
• Otherwise it returns a negative errno 😭.

🌸 SEE ALSO 🌸

Kernel file: ./drivers/thunderbolt/lc.c 📁 — and the whole friend group is:

• tb_lc_read_uuid(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)

That’s the whole page, bestie 💖 — source/version: ./drivers/thunderbolt, date: October 2026. Mwah! 💅🎀