Problem in phy.c, when using fixed network speed
From: Michael Koch <hidden>
Date: 2012-08-01 18:21:34
Hi all, during testing i encountered a problem with setting up a 5200B controller with a MICREL phy at static 100MBit full duplex - without autonegotiation. I performed this as usual with ethtool and was succesful when i had my link partner up, providing a link. When kepping the link partner off, meaning no link at all, my machine started to degrade its link capabilities ending 10MBit half duplex. I tracked it down to drivers/net/phy/phy.c: in the function phy_state_machine, the case block PHY_FORCING causes this (at least for me) undesired behaviour. Calling the phy_force_reduction function degrades actually an intentionally static setup. I deactivated those lines, and it works for me. But anyhow i feel soe need to have a general solution that takes static non autonagotiation setups into account. What do you think? Hope to hear from you Michael