[PATCH net-next v8] net: phy: sfp: probe for RollBall I2C-to-MDIO bridge in mdio-i2c

[patchwork-bot+netdevbpf at kernel.org]

Hello:

This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba at kernel.org>:

On Wed, 27 May 2026 07:39:09 +0200 you wrote:
> The "OEM"/"SFP-10G-T" quirk entry in sfp_fixup_rollball_cc()
> unconditionally forces MDIO_I2C_ROLLBALL for all modules matching that
> vendor/part-number combination.  This works for modules that genuinely
> implement a RollBall I2C-to-MDIO bridge, but silently breaks modules
> that share the same EEPROM strings without having such a bridge.
> 
> The Realtek RTL8261BE-CG is one such module: a pure copper 10G SFP+
> media converter with no I2C-to-MDIO bridge.  Its EEPROM reports
> vendor="OEM", part="SFP-10G-T-I", and -- critically -- Vendor OUI
> 00:00:00, making OUI-based differentiation impossible.  With
> MDIO_I2C_ROLLBALL forced, the module silently ACKs the unlock password
> write, the MDIO bus is created, but no PHY responds; the SFP state
> machine cycles through the RollBall PHY-probe retry window before
> reporting no PHY.
> 
> [...]

Here is the summary with links:
  - [net-next,v8] net: phy: sfp: probe for RollBall I2C-to-MDIO bridge in mdio-i2c
    https://git.kernel.org/netdev/net-next/c/8fe125892f40

You are awesome, thank you!
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