drmm_mode_config_init(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drmm_mode_config_init(9) — the Kernel API Manual, but make it cute

Ok so bestie, welcome to drmm_mode_config_init(9), which is literally the managed DRM mode_configuration structure initialization — yes that's the whole official name and yes it ate 💖

✨ NAME ✨

drmm_mode_config_init — managed DRM mode_configuration structure initialization 🎀

🦋 SYNOPSIS 🦋

int drmm_mode_config_init (struct drm_device *dev );

🌸 ARGUMENTS 🌸

  • dev — the DRM device. your main character. the whole point 👑

💫 DESCRIPTION 💫

So what this does is initialize dev's mode_config structure — the thing that's used for tracking the graphics configuration of dev. It's giving "setting up the vibes before the party starts" fr fr ✨

Now here's the part where you gotta pay attention, no cap: since this initializes the modeset locks, no locking is possible. And honestly? Not a problem — because this is supposed to happen single threaded at init time anyway. The way it works is: it is the driver's problem to ensure this guarantee. Not the function's. The driver's. Keep that in mind bestie, it's lowkey on you 💀

Cleanup? Automatically handled, slay 💅 — it registers drm_mode_config_cleanup with drmm_add_action, so the teardown tidies itself up like the icon it is. Obsessed.

🔥 RETURN 🔥

  • 0 on success 🎉
  • a negative error value on failure 😭

🧚 SEE ALSO 🧚

Kernel file:

./drivers/gpu/drm/drm_mode_config.c

And the whole friend group:

🌈 reminder reminder: no locking here, bestie — the single-threaded-at-init-time guarantee is the driver's job, not a suggestion 🙈

That's the whole page, periodt 💜 This little gem lives in ./drivers/gpu/drm, dated October 2026, and it's officially known as drmm_mode_config_init(9) — go forth and initialize responsibly, mwah 🫶🌸

📦 where this page comes from