drm_atomic_g...te_obj_state(9)

💅 NAME 💅

drm_atomic_get_old_private_obj_state —

okay so that's literally the whole NAME line bestie, it's giving mysterious. no cap, that's all the original gives us. moving on ✨

(this page lives in the Kernel API Manual, btw 🫶)

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✨ SYNOPSIS ✨

struct drm_private_state * drm_atomic_get_old_private_obj_state (const
struct drm_atomic_commit *state , struct drm_private_obj *obj );

bestie look at that return type. struct drm_private_state * — iconic behavior fr fr 💅

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🎀 ARGUMENTS 🎀

• state — the global atomic state object 🌍 like, the big-picture state, the main character of the whole commit
• obj — the private_obj you wanna grab 🙈 that's the one you're reaching for

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🦋 DESCRIPTION 🦋

okay so here's the tea ☕ — this function returns the old private object state for the private_obj you passed in. old state, not new state, iykyk 👑

and if that private_obj isn't part of the global atomic state? it returns NULL. literally just NULL. no drama, no error code, no nothing, just NULL 💀 so like, check for that bestie 🌸

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💜 SEE ALSO 💜

the full squad, no one left behind 🫶

• Kernel file ./drivers/gpu/drm/drm_atomic.c, state lifetime(9), drm_crtc_commit_wait(9), drm_atomic_commit_default_release(9), drm_atomic_commit_init(9), drm_atomic_commit_alloc(9), drm_atomic_commit_default_clear(9), drm_atomic_commit_clear(9), __drm_atomic_commit_free(9)
• drm_atomic_get_crtc_state(9), drm_atomic_get_plane_state(9), drm_atomic_get_colorop_state(9), drm_atomic_get_old_colorop_state(9), drm_atomic_get_new_colorop_state(9), drm_atomic_plane_check(9)
• handling driver private state(9), drm_atomic_private_obj_init(9), drm_atomic_private_obj_fini(9), drm_atomic_get_private_obj_state(9), drm_atomic_get_new_private_obj_state(9)
• drm_atomic_get_old_connector_for_encoder(9), drm_atomic_get_new_connector_for_encoder(9), drm_atomic_get_connector_for_encoder(9), drm_atomic_get_old_crtc_for_encoder(9), drm_atomic_get_new_crtc_for_encoder(9)
• drm_atomic_get_connector_state(9), drm_atomic_get_bridge_state(9), drm_atomic_get_old_bridge_state(9), drm_atomic_get_new_bridge_state(9)
• drm_atomic_add_encoder_bridges(9), drm_atomic_add_affected_connectors(9), drm_atomic_add_affected_planes(9), drm_atomic_add_affected_colorops(9)
• drm_atomic_check_only(9), drm_atomic_commit(9), drm_atomic_nonblocking_commit(9), drm_atomic_print_new_state(9), drm_state_dump(9)

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lowkey the whole friend group is in that SEE ALSO list, go say hi 👋💖

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and that's the page bestie!! 🌈 sign-off time: this one comes from ./drivers/gpu/drm, dated October 2026, and you can find it filed under drm_atomic_g...te_obj_state(9) — slay, periodt, go read some kernel source 💅✨🍓