drm_dp_tunn...ble_bw_alloc(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drm_dp_tunnel_enable_bw_alloc — like, the whole glow-up, bestie

okay so this one lives in the Kernel API Manual (yes, that's the manual name, and yes it's giving "official but make it cute") — and the header up top is literally drm_dp_tunn...ble_bw_alloc(9) because someone was too iconically lazy to type the whole thing out. we know what it means though. 💖

✨ NAME ✨

drm_dp_tunnel_enable_bw_alloc — turn on DP tunnel BW allocation mode. that's it. that's the vibe. 👑

🦋 SYNOPSIS 🦋

int drm_dp_tunnel_enable_bw_alloc(struct drm_dp_tunnel *tunnel);

🎀 ARGUMENTS 🎀

  • tunnel — the tunnel object in question, your main character for this call. 🫶

🌸 DESCRIPTION 🌸

So here's the tea: this function enables the DP tunnel BW allocation mode on tunnel, but only if it supports it. no forcing, no "make it work anyway", we're respecting boundaries here. 🙈

It returns 0 in case of success, and a negative error code otherwise — so like, if you get a negative number back, that's the universe telling you no. 😭

🔥 SEE ALSO 🔥

the whole friend group, fr fr — go say hi:

  • Kernel file ./drivers/gpu/drm/display/drm_dp_tunnel.c

and also:

sign-off era 🧚💜

that's the whole page, bestie! it ships from ./drivers/gpu/drm/display, stamped October 2026, and the footer is still out here calling itself drm_dp_tunn...ble_bw_alloc(9) — consistent queen. slay. 💅✨

📦 where this page comes from