drm_dp_mst_put_mstb_malloc(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drm_dp_mst_put_mstb_malloc(9) — like, the Kernel API Manual bestie 🎀

okay so real talk, this one's a whole little function from the kernel API manual and it's lowkey iconic for how much it does with so few words. buckle up 🦋

✨ NAME ✨

drm_dp_mst_put_mstb_malloc — decrements the malloc refcount of a branch device, periodt 💅

🌸 SYNOPSIS 🌸

void drm_dp_mst_put_mstb_malloc (struct drm_dp_mst_branch *mstb );

like, that's it. that's the whole signature. she's simple, she's elegant, she's giving minimalism 👑

🎀 ARGUMENTS 🎀

  • mstb — the struct drm_dp_mst_branch you're decrementing the malloc refcount of. this is the main character of the whole operation fr fr 🫶

💖 DESCRIPTION 💖

okay so what this does is it decrements drm_dp_mst_branch.malloc_kref. that's the malloc refcount, yk? and here's the tea ☕ — when drm_dp_mst_branch.malloc_kref reaches 0, the memory allocation for mstb gets released and mstb may no longer be used. like, she's gone, don't touch her, do not perceive her 💀

⚠️ bestie pls note: once that refcount hits zero and the memory for mstb is released, you genuinely cannot use mstb anymore. no cap. that's undefined-behaviour territory and we do NOT go there 🙈

See also: drm_dp_mst_get_mstb_malloc — the other half of the duo, the get to this put 🧚

🌈 SEE ALSO 🌈

the whole friend group, literally all of them, no one left out 💜:

that's the whole page bestie, you ate that 🍓✨

source dir: ./drivers/gpu/drm/display · dated: October 2026 · mwah, see u in the next manpage 💋👑

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