nvmem_cell_read(9)

📦 version 7.3.1, in nixpkgs unstable

💖 nvmem_cell_read(9) 💖

okay so bestie, welcome to the kernel API manual — this one's called nvmem_cell_read(9) and it lives in the Kernel API Manual, and honestly? it's giving "small function, big responsibility." let's get into it 🦋

✨ NAME ✨

nvmem_cell_read — read a given nvmem cell, that's the whole vibe 🎀

🌸 SYNOPSIS 🌸

void * nvmem_cell_read (struct nvmem_cell *cell , size_t *len );

literally just hand it a cell and a length pointer and it does its thing ✨

🫶 ARGUMENTS 🫶

  • cell — the nvmem cell you wanna read. that's your main character right there 👑
  • len — a pointer to the length of the cell, and it gets populated on a successful read. can be NULL if you're not about that length life 🙈

💅 RETURN 💅

so here's the tea: you get ERR_PTR on error, or a valid pointer to a buffer on success. and listen — the consumer has to free that buffer with kfree. no cap, don't leave it hanging or that's a leak and the kernel will NOT be slaying about it 😭

⭐ SEE ALSO ⭐

kernel file ./drivers/nvmem/core.c — and like, the whole extended friend group:

k that's the whole page, bestie — mwah 💋

sign-off szn: this little gem comes from ./drivers/nvmem, dated October 2026. screenshot it, frame it, put it on your fridge 🎀✨

📦 where this page comes from