fdt_validate...ved_mem_node(9)

✨ NAME ✨

fdt_validate_reserved_mem_node — validates a reserved memory node 🎀

okay so real talk, bestie, this is the fdt_validate...ved_mem_node(9) page from the Kernel API Manual (yes the title is giving truncation era, that's just how the header line renders it, the actual function is the whole name, we move) 💅

---

🌸 SYNOPSIS 🌸

int fdt_validate_reserved_mem_node (unsigned long node , phys_addr_t
*align );

like, that's the whole vibe. two args, one int coming back at you 🫶

---

🦋 ARGUMENTS 🦋

• node — the FDT node you want to validate. that's the one, that's the main character 🔥
• align — a pointer where the validated alignment gets stored. heads up tho: it may be modified by callback, so don't be weird about it afterwards 🙈

---

💖 DESCRIPTION 💖

so what this function actually does: it iterates through the reserved memory drivers and calls the node_validate callback for the compatible entry that matches the node 👑

that's it. that's the whole thing. it goes shopping through the reserved memory drivers, finds the compatible entry that matches your node, and hits the node_validate callback. no cap ✨

---

🌈 RETURN 🌈

• 0 on success — slay 💯
• -ENODEV if no compatible match found — like when nobody matches your vibe at the party 😭

---

⭐ SEE ALSO ⭐

the kernel file lives at ./drivers/of/of_reserved_mem.c — that's the home base 🏠

and the whole friend group, all present and accounted for:

• fdt_scan_reserved_mem_late(9)
• fdt_fixup_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_to_resource_byname(9)
• of_reserved_mem_region_count(9)

---

ngl this one is a short read but it fully does its job and we respect it for that 🧚

okay bye bestie, this page came to you from ./drivers/of and it's dated October 2026, section 9 of the Kernel API Manual — mwah, go validate something 💜🍓