We have created a board that is based off of the AT91SAM9260-ek. We are running the 2.6.24 kernel with patches from Maxim (http://maxim.org.za/at91_26.html). On a few of our boards we see that after a period of a few hours eth0, powered by the MACB chipset, has a TX error and all transmissions stop.



When we ping the board internally, the packets transfer fine. When we ping the board from another computer the RX bytes increase but there is no change in TX and no response is received. If we do an ifdown/ifup eth0 is reset and we can communicate fine.

Has anyone else seen this problem using the 2.6.24 kernel? I can post more stats/info from the board if need be.

This may not be the same problem but we have discovered a problem in macb after 2.6.22. Changes were made and now it doesn't work on the 9260 development board. We reversed the changes by doing a diff on the 24 and 22 macb files and after that all works.

We have raised this with the macb maintainers.

The problem exists in our own built kernel and the pre built binaries on Angstom and on linux4sam built via buildroot.

dirkvermaak,

When you say the drivers didn't work, in what capacity? We have dozens of boards with the 9260 and the MACB running 2.6.24 and they work just fine. There are a few that we have seen that have caused the issue I described which we are still unable to find a cause. I'll try the diff of the two versions and see if that resolves our issue. Thanks.

I tried to diff the changes from 2.6.22 to 2.6.24 and there seems to be more than just changes to macb.h/macb.c. Would you possibly be able to post the patch you use for 2.6.24 that has a working macb?