tb_port_lane_bonding_enable(9)

💖 NAME 💖

tb_port_lane_bonding_enable — Enable bonding on port 💅

okay so you're on the tb_port_lane_bonding_enable(9) page in the Kernel API Manual, and this whole function is giving “make that port bond” main character energy ✨

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✨ SYNOPSIS ✨

int tb_port_lane_bonding_enable (struct tb_port *port );

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🎀 ARGUMENTS 🎀

• port — the port to enable. that's the whole assignment, bestie 🫶

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🦋 DESCRIPTION 🦋

okay so here's the tea ☕: tb_port_lane_bonding_enable enables bonding by setting the link width of the port and the other port in case of dual link port. it's lowkey doing double duty when there's a dual link situation 💅

but bestie, hear me: it does not wait for the link to actually reach the bonded state. so the caller needs to call tb_port_wait_for_link_width before enabling any paths through the link, to make sure the link is in expected state. no cap, do not skip that step 😭

⚠️ vibe check: enabling paths too early is not the move. call tb_port_wait_for_link_width first, fr fr.

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🔥 RETURN 🔥

0 on success, negative errno otherwise. so like, zero is the slay result; anything negative is the sad little error result 😭💀

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🌈 SEE ALSO 🌈

Kernel file, right here: ./drivers/thunderbolt/switch.c 💖

the whole related-function friend group, 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_link_width(9), tb_port_set_lane_bonding(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)

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mwah 💋 this page's footer energy: source/version ./drivers/thunderbolt, date October 2026, and the page name tb_port_lane_bonding_enable(9). bye bestie, go get that bond 🫶✨