devm_nvmem_device_get(9)

📦 version 7.3.1, in nixpkgs unstable

💅 devm_nvmem_device_get — a Kernel API Manual moment

okay so bestie, welcome to the Kernel API Manual page for devm_nvmem_device_get ✨ this one is lowkey iconic: it's how you pull an nvmem device out of a given id, and the kernel literally handles the cleanup for you. devm = "devres" = "don't worry about freeing it, the device will do it for you" 🫶

🌸 NAME 🌸

devm_nvmem_device_get — get the nvmem device of a device from a given id 💖

✨ SYNOPSIS ✨

struct nvmem_device * devm_nvmem_device_get (struct device *dev , const
char *id );

like, yes, the signature really is wrapped across two lines in the original — we don't gatekeep formatting here 🎀

🎯 ARGUMENTS 🎯

  • dev — the device that's requesting the nvmem device. it's giving "main character energy" — this is the device whose lifetime the whole thing is tied to 💫
  • id — the name id for the requested nvmem device. iykyk, you need to know what you're asking for 👑

🔥 RETURN 🔥

ERR_PTR on error, or a valid pointer to a struct nvmem_device on success. periodt. 💅

and here's the slay part: the nvmem_device will be freed automatically once the device is freed. not me having to call a put function?? couldn't be her. the devm machinery ate and left no crumbs 🍓

👀 SEE ALSO 👀

Kernel file ./drivers/nvmem/core.c — literally where the magic lives, go read it 🧚

like, that's the whole nvmem friend group and they're all invited to the group chat 💜

ngl this page lives in ./drivers/nvmem, and it's dated October 2026 — so yeah, she's from the future, we stan a forward-thinking API 🌈⭐

okay bestie that's the whole page, go forth and devm_nvmem_device_get responsibly, mwah 💋🦋

📦 where this page comes from