From: Michael Koch <caesar_hal9000@gmx.net>
To: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
Subject: Problem in phy.c, when using fixed network speed
Date: Wed, 01 Aug 2012 20:14:44 +0200 [thread overview]
Message-ID: <50197214.7090703@gmx.net> (raw)
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
next reply other threads:[~2012-08-01 18:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-01 18:14 Michael Koch [this message]
2012-08-02 9:35 ` Problem in phy.c, when using fixed network speed Jenkins, Clive
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