On Tue, 2015-11-24 at 05:19 -0700, Martin Roth wrote: > I was looking for an error on MPC8270 processor 100 Mbps Ethernet FCC port. > The port may become locked if it is set to AUTO, while the peer is forced to > 100 Mbs full duplex (non AUTO). > I was looking for an error in the area of collision handling of the driver. > It looks like I found the problem. > > The error is at line 555: > http://lxr.free-electrons.com/source/drivers/net/ethernet/freescale/fs_enet/ > mac-fcc.c#L555 > > The problem is that the last descriptor address is not calculated correctly. > > Instead of > last_tx_bd = fep->tx_bd_base + (fpi->tx_ring * sizeof(cbd_t)); > The fix should be: > last_tx_bd = fep->tx_bd_base + ((fpi->tx_ring-1)* sizeof(cbd_t)); > > Is it a bug? > Thanks, > Martin Roth
Yes, it looks like a bug. Could you send a patch to the netdev list and maintainer? -Scott _______________________________________________ Linuxppc-dev mailing list [email protected] https://lists.ozlabs.org/listinfo/linuxppc-dev
