spi_nor_write_data(9)

📦 version 7.3.1, in nixpkgs unstable

✨ NAME ✨

okay so bestie, this is spi_nor_write_data(9) from the Kernel API Manual, and its whole job is write data to flash memory. that's it, that's the vibe — it writes your bytes into flash. no cap 💖

📝 SYNOPSIS 📝

the signature is giving kernel-flash realness:

ssize_t spi_nor_write_data (struct spi_nor *nor , loff_t to , size_t len
, const u8 *buf );

🧾 ARGUMENTS 🧾

  • nor — pointer to struct spi_nor; this is the flash chip's main-character struct, bestie 🫶
  • to — offset to write to. yes, the spot in flash where the data goes 📍
  • len — number of bytes to write. like, how much data is going in 🔢
  • buf — pointer to src buffer. the source data lives here 🍓

🔁 RETURN 🔁

number of bytes written successfully, otherwise -errno. so if it worked you get a count, and if it didn't you get the negative errno vibe 😭 periodt.

👀 SEE ALSO 👀

Kernel file: ./drivers/mtd/spi-nor/core.c — and the whole bestie crew is here:

okay bye bestie 💖 this page comes from the ./drivers/mtd/spi-nor source tree, October 2026 edition, and it's spi_nor_write_data(9) signing off with main character energy 🌈✨

📦 where this page comes from