spi_nor_spimem_write_data(9)

📦 version 7.3.1, in nixpkgs unstable

💖 spi_nor_spimem_write_data — the Kernel API Manual ✨

okay so bestie, welcome to the spi_nor_spimem_write_data(9) page 💅 you're literally about to learn how to write data to flash memory via spi-mem. yes it's a kernel function. yes it's iconic. let's go 🫶

🌸 NAME 🌸

spi_nor_spimem_write_data — write data to flash memory via spi-mem ✨

🎀 SYNOPSIS 🎀

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

like, that's the whole vibe check right there 💅

✨ ARGUMENTS ✨

  • nor — pointer to struct spi_nor, the actual flash chip we're talking to 🧚
  • to — offset to write to, aka where the magic lands 📍
  • len — number of bytes to write, be delulu about the size and it goes wrong fr fr
  • buf — pointer to src buffer, your data lives here bestie 🍓

🔥 RETURN 🔥

number of bytes written successfully, -errno otherwise 😭 (yes, negative errno, that's the plot twist)

👑 SEE ALSO 👑

Kernel file ./drivers/mtd/spi-nor/core.c — and honestly the whole friend group is here, no cap:

and that's the page bestie 💜 it lives in ./drivers/mtd/spi-nor, dated October 2026, and it's literally part of the Kernel API Manual. slay, go write some flash 🦋✨

📦 where this page comes from