Cardbus NIC & Kernel IP Autoconfig / NFS root

Linden lm at
Tue Jun 1 04:35:22 CST 2004

Hi All,

I have an older Acer laptop (extensa 500) with a Netgear FA511 cardbus 
network card, and I am attempting to make it get its root filesystem 
over NFS. I have compiled a 2.6.5 kernel with NFS root support, kernel 
level autoconfiguration, PCMCIA/Cardbus support, etc. It works fine 
until it gets to the auto configuration part (this is the kernel command 
line: "root=/dev/nfs ip=dhcp") - the network card hasn't initialised 
yet, and of course the kernel can't see the DHCP server.

The strange thing is, only after VFS has complained that it can't mount 
the root fs, the NIC decides to initialise. I have put some extra 
printk's in init/main.c to see where the NIC driver (tulip) is 
initialised, and it's definitely before IP Autoconfig starts.

On a PC with a PCI network card with a similarly configured kernel, the 
NIC initialises in time, so what's going on here? Is it a cardbus 
idiosyncracy? Can I fix it without hacking the tulip driver too much?

If anyone has any suggestions, I'd really appreciate it. :) I can 
provide dumps etc if necessary, but they are out of reach at the moment.


Linden May

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