hns_mdio_write_c45(9)

okay bestie, welcome to the hns_mdio_write_c45(9) page from the Kernel API Manual 💖 this is the kernel-API corner for the hns_mdio_write_c45 function, and we are keeping every single detail exactly where it belongs. no cap ✨

🎀 NAME 🎀

hns_mdio_write_c45 — access phy register 💅

🌸 SYNOPSIS 🌸

here's the signature in all its exact glory, bestie:

int hns_mdio_write_c45 (struct mii_bus *bus , int phy_id , int devad ,
       int regnum , u16 data );

💅 ARGUMENTS 💅

okay so the function takes these five, and yes we're keeping the labels exactly:

• bus — mdio bus 🚌
• phy_id — phy id 🆔
• devad — device address to read 👀 the original literally says "read" here, and we are not editing it, periodt
• regnum — register num 🔢
• data — register value 🍓

🦋 DESCRIPTION 🦋

short and sweet, bestie:

Return 0 on success, negative on failure

that's it, that's the description ✨ slay.

🌈 SEE ALSO 🌈

go peek at the kernel file and the sibling functions:

• Kernel file ./drivers/net/ethernet/hisilicon/hns_mdio.c
• hns_mdio_write_c22(9)
• hns_mdio_read_c22(9)
• hns_mdio_read_c45(9)
• hns_mdio_reset(9)
• hns_mdio_probe(9)
• hns_mdio_remove(9)

xoxo bestie 💜 — source/version: ./drivers/net/ethernet/hisilicon, date: October 2026. that's the whole page, mwah 💋