Geert,
The ne.c network driver does not appear to tolerate interrupts arriving before
the device has been configured, at least in the early boot phases. I'm uncertain
whether it would work even with my latest patches applied - maybe I can find
some time on the weekend to test that.
Stupid ISA-only driver without IRQ sharing support...
Indeed - but that may be my old hacked driver which does have IRQ sharing.
The hydra and zorro8390 driver should handle that case fine, as interrupts are
shared on Amiga.
But these will only generate interrupts if the card has something to send,
or receive has been enabled. The timer polling seems to be the problem here.
Geert: is there some way for kernel network drivers to figure out whether the
network subsystem has been initialized, and hold off interrupt processing
before that time? I'm using 'if (netif_running(dev))' in atari_ethernec but
that does not appear to prevent the lockup.
Doesn't the driver know when it's configured?
It does - it will spit out 'interrupt from stopped card' in that case.
That's the last message I see from the kernel before it locks up (haven't
tried in a while, at least that's what happened a year or two ago). The same
still happens when loading the driver as a module - a single message of the
kind, nothing more (but the kernel keeps running).
I would have thought netif_running(dev) returns false before the device has
been started, but that's wrong, apparently.
Cheers,
Michael
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