dap8211r_read_ext(9)

💅 NAME 💅

dap8211r_read_ext — bestie, this is the one that reads an extended register ✨

okay so real quick, we're in the Kernel API Manual (section 9, kernel-space girlies only 🎀), and this little icon does exactly what it says on the tin.

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🌸 SYNOPSIS 🌸

int dap8211r_read_ext (struct phy_device *phydev , u16 reg );

that's it. that's the whole vibe check. two arguments, returns an int, slay 💅

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🦋 ARGUMENTS 🦋

• phydev — the PHY device structure 🫶 like, the actual device you're poking at
• reg — the extended register address 🔥 which register we're reading, bestie

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✨ DESCRIPTION ✨

okay so here's the tea ☕ — this function reads a PHY extended register, and it does it using the indirect access method. not direct. indirect. iykyk 💫

⚠️ no cap, this part matters: the caller must hold the MDIO bus lock. like, must must. not "should", not "probably", not "it'll be fine". hold the lock or you're gonna have a bad time 😭🔒

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🌈 RETURN 🌈

• the register value on success 👑 (that's the good ending, we love to see it)
• or a negative error code 💀 (the flop era ending, happens to the best of us)

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🎀 SEE ALSO 🎀

• the kernel file ./drivers/net/phy/dap8211r.c 🍓 — that's where the whole family lives
• dap8211r_modify_ext(9) — the sibling that changes stuff, main character energy fr fr
• dap8211r_config_init(9) — the ✨ setup ✨ one

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and that's the page, bestie! 💖 this came to you straight out of the ./drivers/net/phy directory, dated October 2026, and it's giving "kernel API manual, but make it cute" 🧚⭐ go read some extended registers (with the lock held, obviously 🙈) 💜