__mdiobus_c45_write(9)

📦 version 7.3.1, in nixpkgs unstable

💅 __mdiobus_c45_write(9) 💅

okay so bestie, this is the Kernel API Manual page for __mdiobus_c45_write(9) — it's giving unlocked mdiobus_write energy, and we are gonna get you fluent in it. ✨ No cap, every detail stays.

💖 NAME 💖

__mdiobus_c45_write — unlocked version of the mdiobus_write function. periodt. 🫶

✨ SYNOPSIS ✨

int __mdiobus_c45_write (struct mii_bus *bus , int addr , int devad ,
       u32 regnum , u16 val );

🎀 ARGUMENTS 🎀

  • bus — the mii_bus struct 🚌
  • addr — the phy address 🌸
  • devad — device address to read 👀
  • regnum — register number to write 📝
  • val — value to write to regnum 💌

🌸 RETURN 🌸

Zero if successful, negative error code on failure. so either 0 and slay, or a negative error code and we cry. 😭

🦋 DESCRIPTION 🦋

Write a MDIO bus register. Caller must hold the mdio bus lock. 🔒

💀 NOTE 💀

🚨 MUST NOT be called from interrupt context. 🚨

👑 SEE ALSO 👑

Kernel file ./drivers/net/phy/mdio_bus.c — and these besties:

later, bestie — source/version: ./drivers/net/phy, date: October 2026. 💖✨

📦 where this page comes from