Anton Vorontsov wrote:
MPC8360 QE UCC ethernet controllers hang when changing link duplex under a load (a bit of NFS activity is enough).PHY: m...@e0102120:00 - Link is Up - 1000/Full sh-3.00# ethtool -s eth0 speed 100 duplex half autoneg off PHY: m...@e0102120:00 - Link is Down PHY: m...@e0102120:00 - Link is Up - 100/Half NETDEV WATCHDOG: eth0 (ucc_geth): transmit queue 0 timed out ------------[ cut here ]------------ Badness at c01fcbd0 [verbose debug info unavailable] NIP: c01fcbd0 LR: c01fcbd0 CTR: c0194e44 ... The cure is to disable the controller before changing speed/duplex and enable it afterwards. Since ugeth_graceful_stop_{tx,rx} now may be called from an atomic context, switch the two functions from msleep() to mdelay().
Ouch. Can we put this in a workqueue or something? -Scott _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
