Jonatan Antoni wrote:
Hello,
we are using an AT91RM9200 microcomputer as a usb-gadget.
If our target is connected to a host and the usb-link is in use by e.g.
g_ether, it goes into a kernel oops in some
cases.
I have reconstructed the following case:
- establish the usb-connection between the target and a windows host
- do "modprobe g_ether" on the target
- do "ifconfig usb0 192.168.1.2 up" on the target
- test the connection with e.g. ping
- do "rmmod g_ether"
The system hangs with a kernel oops message.
Double check that your kernel and modules are compiled from the same .config
file. I made this mistake recently with g_ether, I forgot to "make modules"
after removing netfilter and recompiling the kernel. g_ether would half work
but then fall over once enumerated as a network device. It caused a cyclic
reset when plugged into the host PC ...
Aras
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