changeset_dup_entry_check(9)

✨ changeset_dup_entry_check(9) ✨

okay so bestie, welcome to the changeset_dup_entry_check(9) page — that's the Kernel API Manual, section 9, and it's literally the vibes-check for your overlay changesets 💅

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🌸 NAME 🌸

changeset_dup_entry_check — check for duplicate entries

no cap, that's the whole personality: it checks for dupes 🫶

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🎀 SYNOPSIS 🎀

int changeset_dup_entry_check (struct overlay_changeset *ovcs );

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🦋 ARGUMENTS 🦋

• ovcs — the overlay changeset you're passing in, bestie. that's it, that's the argument 💖

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🔥 DESCRIPTION 🔥

so here's the tea ☕ — this function goes through the changeset ovcs->cset and looks for duplicates. specifically:

• multiple {add or delete} node entries for the same node, or
• duplicate {add, delete, or update} properties entries for the same property

like, you can't just add the same node twice and think nobody's gonna notice. not on her watch 🙈

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⭐ RETURN ⭐

• 0 — success, we're slaying, no dupes found 💜
• -EINVAL — uh oh, a duplicate changeset entry was found 😭

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🌈 SEE ALSO 🌈

kernel file ./drivers/of/overlay.c (iykyk 👀), plus these icons:

• struct target(9)
• struct fragment(9)
• struct overlay_changeset(9)
• of_overlay_notifier_register(9)
• of_overlay_notifier_unregister(9)
• add_changeset_property(9)
• add_changeset_node(9)
• build_changeset_next_level(9)
• build_changeset(9)
• init_overlay_changeset(9)
• of_overlay_fdt_apply(9)
• of_overlay_remove(9)
• of_overlay_remove_all(9)

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fr fr, if you're touching device tree overlays, read these. it's giving "required reading" energy 📚✨

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and that's the page babes 🎀 — brought to you from ./drivers/of, dated October 2026, and yes the header still reads changeset_dup_entry_check(9) because some things are iconic and don't need a rebrand 👑💖