drm_atomic_h...r_crtc_reset(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drm_atomic_helper_crtc_reset(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ — this one's about a little function that resets your CRTC's atomic state, and honestly? it's giving "glow-up in one call." 🦋

🌸 NAME 🌸

drm_atomic_helper_crtc_reset — the default &drm_crtc_funcs.reset hook for CRTCs. periodt. 👑

✨ SYNOPSIS ✨

void drm_atomic_helper_crtc_reset (struct drm_crtc *crtc );

like, that's it. one argument. no drama. 💜

🎀 ARGUMENTS 🎀

  • crtc — the drm CRTC. that's the whole vibe check for this parameter, she's just a CRTC 💅

🔥 DESCRIPTION 🔥

So what does she do? 👀 She resets the atomic state for crtc — and the way she does it is lowkey iconic: she frees the state pointer first (and yes, bestie, that pointer might literally be NULL, like, for example at driver load time 🙈 — she handles it, no cap) and then she allocates a new empty state object. ✨

free the old, allocate the fresh, out with the old energy, in with the new. main character behavior fr fr. 🫶

⚠️ reminder that this is the default reset hook for CRTCs — &drm_crtc_funcs.reset — so if you're writing a driver, this is the one you get handed unless you go out of your way to do something else.

🌈 SEE ALSO 🌈

okay this list is LONG but every single one of these matters, so buckle in bestie 🎀 — also shoutout to the kernel file ./drivers/gpu/drm/drm_atomic_state_helper.c, that's where the magic lives 💖

k that's the whole page bestie, go reset some state, slay 💅✨

signed off from ./drivers/gpu/drm — dated October 2026 🎀🦋 iykyk 💖

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