drm_dp_tunnel_get(9)

💖 drm_dp_tunnel_get(9) 💖

okay bestie, welcome to the Kernel API Manual entry for drm_dp_tunnel_get — yes, the manual name is literally Kernel API Manual, we love a formal queen 🎀

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✨ NAME ✨

drm_dp_tunnel_get — get a reference for a DP tunnel 🚇

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🦋 SYNOPSIS 🦋

struct drm_dp_tunnel * drm_dp_tunnel_get (struct drm_dp_tunnel *tunnel ,
struct ref_tracker **tracker );

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🌸 ARGUMENTS 🌸

• tunnel — the tunnel object, your main character 🫶
• tracker — a debug tracker for the reference, lowkey the receipts for your ref 👑

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💅 DESCRIPTION 💅

so what this does is it gets you a reference for tunnel, and it also hands you a debug tracker — that tracker is there to help you locate the source of a reference leak / double reference put etc. issue. it's giving "who left the fridge open" energy but for refcounts 😭

the reference must be dropped after use, by calling drm_dp_tunnel_put and passing in tunnel and the *tracker that came back from here. no cap, this part is not optional 💀

and what does it return? tunnel — as a convenience — along with *tracker. iconic, honestly ✨

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👑 SEE ALSO 👑

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

drm_dp_tunnel_put(9), drm_dp_tunnel_set_io_error(9), drm_dp_tunnel_detect(9), drm_dp_tunnel_destroy(9), drm_dp_tunnel_enable_bw_alloc(9), drm_dp_tunnel_disable_bw_alloc(9), drm_dp_tunnel_bw_alloc_is_enabled(9), drm_dp_tunnel_pr_optimization_supported(9), drm_dp_tunnel_alloc_bw(9), drm_dp_tunnel_get_allocated_bw(9), drm_dp_tunnel_update_state(9), drm_dp_tunnel_128b132b_supported(9), drm_dp_tunnel_128b132b_lane0_mapping_supported(9), drm_dp_tunnel_128b132b_dprx_rates(9), drm_dp_tunnel_max_dprx_rate(9), drm_dp_tunnel_max_dprx_lane_count(9), drm_dp_tunnel_available_bw(9), drm_dp_tunnel_atomic_get_state(9), drm_dp_tunnel_atomic_get_old_state(9), drm_dp_tunnel_atomic_get_new_state(9), drm_dp_tunnel_atomic_set_stream_bw(9), drm_dp_tunnel_atomic_get_required_bw(9), drm_dp_tunnel_atomic_get_group_streams_in_state(9), drm_dp_tunnel_atomic_check_stream_bws(9), drm_dp_tunnel_mgr_create(9), drm_dp_tunnel_mgr_destroy(9) 💜

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and that's the whole page bestie — mwah 💋 this little gem lives in ./drivers/gpu/drm/display, dated October 2026, brought to you by the Kernel API Manual. go forth and put your refs back, i'm obsessed with you 🧚🌟