spi_nor_write_disable(9)

📦 version 7.3.1, in nixpkgs unstable

💅 spi_nor_write_disable — Kernel API Manual, section 9 🎀

okay bestie, so this page lives in section 9 of the Kernel API Manual, and it's about the tiniest little function that does the most important little job: telling the flash chip "hey, stop accepting writes now, we're done here." slay.

✨ NAME ✨

spi_nor_write_disable — send the Write Disable instruction to the chip. that's it, that's the whole vibe. 💅

🌸 SYNOPSIS 🌸

int spi_nor_write_disable (struct spi_nor *nor );

🦋 ARGUMENTS 🦋

  • nor — pointer to struct spi_nor. like, the actual chip object you're talking to. you hand it over and it handles the rest, no cap. 🫶

⭐ RETURN ⭐

0 on success, -errno otherwise. so: zero means we ate and left no crumbs, anything negative means something went sideways and it's handing you the error number. 😭

fr fr, check that return value. a negative -errno is the function telling you the write-disable did not land, and you don't wanna be out here assuming writes are locked out when they're not. 🔥

🌈 SEE ALSO 🌈

bestie there is a whole friend group here, and I'm listing every single one of them because they all matter. iykyk. 👑

and that's the whole page, bestie. source dir is ./drivers/mtd/spi-nor, dated October 2026, and honestly? iconic. go forth and disable those writes responsibly 💜✨🎀

📦 where this page comes from