tb_lc_set_sleep(9)

✨ tb_lc_set_sleep(9) ✨

okay so this is tb_lc_set_sleep(9), straight outta the Kernel API Manual 🫶 and it's the function that tells the switch’s link controllers “bestie, we’re going to sleep” 😴 no cap.

---

💖 NAME 💖

tb_lc_set_sleep — Inform LC that the switch is going to sleep.

✨ SYNOPSIS ✨

int tb_lc_set_sleep (struct tb_switch *sw );

🎀 ARGUMENTS 🎀

• sw — the switch to set sleep 😴 like, the actual struct tb_switch * you’re handing over so it can get its sleepy-time notice.

🌸 DESCRIPTION 🌸

Let the switch link controllers know that the switch is going to sleep. That’s the whole assignment, bestie: a lil heads-up so the LC isn’t caught off guard when the switch goes night-night 😴✨.

🦋 RETURN 🦋

• 0 on success 🎉
• negative errno otherwise 😭

so slay when it’s 0, and go check that errno when it’s not 💅.

💅 SEE ALSO 💅

the whole squad fr fr:

• Kernel file ./drivers/thunderbolt/lc.c
• tb_lc_read_uuid(9)
• 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_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)

---

cute sign-off era: this page lives in ./drivers/thunderbolt, dated October 2026, and yes bestie, it is literally tb_lc_set_sleep(9) 💖✨