spinand_user_otp_write(9)

💖 spinand_user_otp_write(9) 💖

okay so bestie, welcome to the spinand_user_otp_write(9) glow-up page from the Kernel API Manual. This is the one that writes to the OTP area, and yes it's giving “tiny but important kernel function” energy. 🦋

✨ NAME ✨

spinand_user_otp_write - Write to OTP area

🎀 SYNOPSIS 🎀

here's the exact signature, no cap:

int spinand_user_otp_write (struct spinand_device *spinand , loff_t ofs , size_t len , size_t *retlen , const u8 *buf );

💅 ARGUMENTS 💅

• spinand — the spinand device, the main character of this whole call 💅
• ofs — the offset to write to, literally where you're aiming in the OTP area ✨
• len — the number of bytes to write, bestie, exact count
• retlen — the pointer to variable to store the number of written bytes, so it can report back how much got written 🫶
• buf — the buffer with data to write, aka the payload snack 🍓

🔥 RETURN 🔥

0 on success, an error code otherwise. That's it, no mystery, no cap. If it's not 0, something went sideways and you get an error code. 🔥

🌈 SEE ALSO 🌈

check these out too, iykyk:

• Kernel file ./drivers/mtd/nand/spi/otp.c
• spinand_otp_page_size(9)
• spinand_fact_otp_size(9)
• spinand_user_otp_size(9)
• spinand_fact_otp_read(9)
• spinand_user_otp_read(9)
• spinand_set_mtd_otp_ops(9)

xoxo bestie 💖 this page's source/version is ./drivers/mtd/nand/spi, dated October 2026, and the page is spinand_user_otp_write(9). slay. 🎀