dpu_rm_release(9)

📦 version 7.3.1, in nixpkgs unstable

✨ dpu_rm_release ✨

Okay bestie, so we're looking at dpu_rm_release, which is a Kernel API Manual situation — like, the manual for people writing kernel code, not a normal-person manual, but honestly the vibe is still very much "clean up your mess." 💅

🌸 NAME 🌸

dpu_rm_release — given the encoder for the display chain, release any HW blocks previously reserved for that use case.

Like, you reserved the hardware, you used it, now give it back. It's called sharing, bestie. Iconic behavior.

✨ SYNOPSIS ✨

void dpu_rm_release(struct dpu_global_state *global_state, struct drm_crtc *crtc);

🎀 ARGUMENTS 🎀

  • global_state — the resources shared across multiple kms objects. Think of it as the communal group chat of resources — everybody in the KMS world is in there, and you do not want to be messy with what's in it. 🙈
  • crtc — the DRM CRTC handle. That's the thing you're releasing the resources for. It's giving "returning the borrowed hoodie" energy. 🫶

💜 RETURN 💜

Lowkey the funniest part: the original says 0 on Success otherwise -ERROR. So it's void in the synopsis but also apparently returns a 0 or an error? Whatever, we don't question the ancient kernel texts, we just note it. ⭐

🦋 SEE ALSO 🦋

The kernel file is ./drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c — that's where all the action lives, no cap. And please check out its little friends, they're all part of the same resource-management friend group:

Not me spelling every single underscore correctly. 😭 The attention to detail, the dedication — periodt.

Heads up bestie: this release function isn't the "release everything" one — if you want to nuke all the SSPP reservations, that's dpu_rm_release_all_sspp(9). Different function, different vibe. Don't mix them up fr fr. 💀

Okay that's the whole page! Coming to you from ./drivers/gpu/drm/msm/disp/dpu1, dated October 2026, in the Kernel API Manual — slay, mwah 💖✨

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