nvmem_cell_read_u8(9)

📦 version 7.3.1, in nixpkgs unstable

💖 nvmem_cell_read_u8(9) — the Kernel API Manual, bestie edition 💖

okay so real talk: this is a page from the Kernel API Manual (manual section 9, the kernel-functions girlypop section) and it's about one tiny little function called nvmem_cell_read_u8. it's giving "small but mighty" energy and honestly? we stan. let's get into it ✨

🌸 NAME 🌸

nvmem_cell_read_u8 — read a cell value as a u8, no cap 🫶

like literally that's the whole vibe. you got a cell, you want one lil byte-sized number out of it, this is your girl.

🦋 SYNOPSIS 🦋

int nvmem_cell_read_u8 (struct device *dev , const char *cell_id , u8
*val );

yep that's the whole signature. three args in, an int out. she's compact, she's iconic, she's on the group chat 💅

🎀 ARGUMENTS 🎀

  • dev — the Device that requests the nvmem cell. like, whose device is this cell for? that one. it's the main character of the request 🔥
  • cell_id — the Name of the nvmem cell you wanna read. just a string, just a name, that's it 🏷️
  • val — pointer to the output value. this is where your precious u8 lands, so make sure it's pointing somewhere real and not into the void 😭

⭐ RETURN ⭐

0 on success, or a negative errno if things went sideways. so like… zero equals slay, negative equals not slay 💀

bestie pls actually check that return value. negative errno is not a vibe you want to ignore, fr fr.

🌈 SEE ALSO 🌈

the whole friend group, and yes we're listing every single one because nobody gets left behind 🫶 the kernel file is ./drivers/nvmem/core.c:

like look at that roster. every single one accounted for. ate and left no crumbs 👑

and that's the page!! this little cutie lives in ./drivers/nvmem, dated October 2026, brought to you by the Kernel API Manual, section 9. now go read a u8 and be iconic about it 💜✨

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