tb_port_set_link_width(9)

tb_port_set_link_width(9) — a Kernel API Manual page, but make it fashion 💅✨

🎀 NAME 🎀

okay so this is the page for tb_port_set_link_width, and yep, the manual name is Kernel API Manual. The function is tb_port_set_link_width — Set target link width of the lane adapter. That’s the name and that’s the assignment, periodt. 💖

🌸 SYNOPSIS 🌸

int tb_port_set_link_width (struct tb_port *port , enum tb_link_width
width );

🦋 ARGUMENTS 🦋

• port — the lane adapter. That’s the port we’re talking about, no cap.
• width — the target link width. Like the width we’re aiming for, bestie.

✨ DESCRIPTION ✨

So tb_port_set_link_width sets the target link width of the lane adapter to width. That’s it. That’s the whole vibe.

Important caveat, and I need you to hear me: it does not enable/disable lane bonding. Not its job. For that, call tb_port_set_lane_bonding. Do not ask this function to do lane bonding; it said no. 💅

💜 RETURN 💜

It returns 0 on success, and a negative errno otherwise. Slay when it’s 0, cry when it’s negative, iykyk. 😭

🌈 SEE ALSO 🌈

Kernel file: ./drivers/thunderbolt/switch.c

The whole bestie group chat, in order:

• tb_switch_nvm_read(9), tb_port_state(9), tb_wait_for_port(9), tb_port_add_nfc_credits(9), tb_port_clear_counter(9), tb_port_unlock(9), tb_port_enable(9), tb_port_disable(9), tb_port_reset(9), tb_port_alloc_in_hopid(9), tb_port_alloc_out_hopid(9), tb_port_release_in_hopid(9), tb_port_release_out_hopid(9), tb_next_port_on_path(9), tb_port_get_link_speed(9), tb_port_get_link_generation(9), tb_port_get_link_width(9), tb_port_width_supported(9), tb_port_set_lane_bonding(9), tb_port_lane_bonding_enable(9), tb_port_lane_bonding_disable(9), tb_port_wait_for_link_width(9), tb_port_update_credits(9), tb_port_is_enabled(9), tb_usb3_port_is_enabled(9), tb_usb3_port_enable(9), tb_pci_port_is_enabled(9), tb_pci_port_enable(9), tb_dp_port_hpd_is_active(9), tb_dp_port_hpd_clear(9), tb_dp_port_set_hops(9), tb_dp_port_is_enabled(9), tb_dp_port_enable(9), tb_switch_reset(9), tb_switch_wait_for_bit(9), tb_switch_alloc(9), tb_switch_alloc_safe_mode(9), tb_switch_configure(9), tb_switch_configuration_valid(9), tb_switch_lane_bonding_enable(9), tb_switch_lane_bonding_disable(9), tb_switch_set_link_width(9), tb_switch_configure_link(9), tb_switch_unconfigure_link(9), tb_switch_add(9), tb_switch_remove(9), tb_sw_set_unplugged(9), tb_switch_resume(9), tb_switch_suspend(9), tb_switch_query_dp_resource(9), tb_switch_alloc_dp_resource(9), tb_switch_dealloc_dp_resource(9), tb_switch_find_by_link_depth(9), tb_switch_find_by_uuid(9), tb_switch_find_by_route(9), tb_switch_find_port(9), tb_switch_pcie_l1_enable(9), tb_switch_xhci_connect(9), tb_switch_xhci_disconnect(9)

byeee 🫶 source/version: ./drivers/thunderbolt · date on this glow-up: October 2026 · page: tb_port_set_link_width(9) 💖