of_reserved...ource_byname(9)

💖 NAME 💖

of_reserved_mem_region_to_resource_byname — okay so this one grabs a reserved memory region and hands it back to you as a resource, bestie ✨

This page lives in the Kernel API Manual, and the function it's hyping up is literally called of_reserved...ource_byname(9) (yes the name is a whole mood, we don't question it) 🎀

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🌸 SYNOPSIS 🌸

int of_reserved_mem_region_to_resource_byname (const struct device_node
       *np , const char *name , struct resource *res );

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🦋 ARGUMENTS 🦋

• np — the node that's holding the 'memory-region' property. like, the one carrying the goods 💅
• name — the name of the 'memory-region' property entry you wanna look up. it's giving "which one tho" 🧚
• res — a pointer to a struct resource that gets filled in with the reserved region. she's the vessel, she gets filled, we love her 🫶

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✨ DESCRIPTION ✨

So here's the vibe: this function lets drivers look up a node's 'memory-region' property entries by name, and then it hands you back a struct resource for whichever entry you asked for. no cap, that's the whole thing 💀

It returns 0 on success, with res filled in — iconic behaviour 👑 — or a negative error-code on failure. so yeah, check your return values, bestie, this is not the place to be asleep 😭

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💜 SEE ALSO 💜

Kernel file: ./drivers/of/of_reserved_mem.c

• fdt_scan_reserved_mem_late(9)
• fdt_fixup_reserved_mem_node(9)
• fdt_validate_reserved_mem_node(9)
• __reserved_mem_init_node(9)
• fdt_init_reserved_mem_node(9)
• of_reserved_mem_device_init_by_idx(9)
• of_reserved_mem_device_init_by_name(9)
• of_reserved_mem_device_release(9)
• devm_of_reserved_mem_device_init(9)
• of_reserved_mem_lookup(9)
• of_reserved_mem_region_to_resource(9)
• of_reserved_mem_region_count(9)

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quick reminder that res only means anything when the return is 0, so like… actually look at the return code before you go dereferencing anything, i'm begging 🙈

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and that's the page, bestie!! 🍓 this little baddie comes to you from ./drivers/of, dated October 2026, and it answers to the name of_reserved...ource_byname(9) — go off, you beautiful truncated legend 🌈✨💅