remove_resource(9)

💅 remove_resource(9) 💅

okay so you found the remove_resource(9) page from the Kernel API Manual — welcome, bestie, this one's short and sweet 🎀

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✨ NAME ✨

remove_resource — the girl whose whole job is removing a resource in the resource tree 🦋

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🌸 SYNOPSIS 🌸

int remove_resource (struct resource *old );

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💖 ARGUMENTS 💖

• old — the resource you wanna remove. literally that's it, that's the whole argument 🫶

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🔥 DESCRIPTION 🔥

okay so first things first, the return value: it gives you 0 on success, and -EINVAL if the resource is not valid. no cap. 💀

so what does it actually do? it removes a resource that was previously inserted by insert_resource or insert_resource_conflict, and it moves the children (if any) up to where they were before. the way that works 👑 — insert_resource and insert_resource_conflict insert a new resource, and move any conflicting resources down to be the children of the new resource. so remove_resource is like the un-doing, the reverse-glow-up, putting the kids back where they belong ✨

and like, who is this even for? insert_resource, insert_resource_conflict and remove_resource are intended for producers of resources, such as FW modules and bus drivers. iykyk 🧚

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🦋 SEE ALSO 🦋

• Kernel file ./kernel/resource.c
• request_resource_conflict(9)
• request_resource(9)
• release_resource(9)
• find_next_res(9)
• walk_iomem_res_desc(9)
• region_intersects(9)
• find_resource_space(9)
• reallocate_resource(9)
• allocate_resource(9)
• lookup_resource(9)
• insert_resource_conflict(9)
• insert_resource(9)
• insert_resource_expand_to_fit(9)
• adjust_resource(9)
• resource_alignment(9)
• __request_region(9)
• __release_region(9)
• release_mem_region_adjustable(9)
• merge_system_ram_resource(9)
• devm_request_resource(9)
• devm_release_resource(9)
• devm_request_free_mem_region(9)
• alloc_free_mem_region(9)

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okay that's the whole page, go forth and un-insert your resources bestie 💜 this one came out of ./kernel, dated October 2026 — mwah, slay, periodt 🌈⭐