Re: [PATCH net] net: mdio: mdio-bitbang: Fix C45 read/write protocol

From: patchwork-bot+netdevbpf
Date: Sat Aug 19 2023 - 07:53:56 EST


Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller <davem@xxxxxxxxxxxxx>:

On Wed, 16 Aug 2023 21:06:52 +0300 you wrote:
> Based on the original code semantic in case of Clause 45 MDIO, the address
> command is supposed to be followed by the command sending the MMD address,
> not the CSR address. The commit 002dd3de097c ("net: mdio: mdio-bitbang:
> Separate C22 and C45 transactions") has erroneously broken that. So most
> likely due to an unfortunate variable name it switched the code to sending
> the CSR address. In our case it caused the protocol malfunction so the
> read operation always failed with the turnaround bit always been driven to
> one by PHY instead of zero. Fix that by getting back the correct
> behaviour: sending MMD address command right after the regular address
> command.
>
> [...]

Here is the summary with links:
- [net] net: mdio: mdio-bitbang: Fix C45 read/write protocol
https://git.kernel.org/netdev/net/c/2572ce62415c

You are awesome, thank you!
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