serial module in 2.3.x?

Hi,
has anybody seen the same? I'd like to include the serial.o module into
recent kernels (2.3.x). No luck, I always get a machine check. I'm not
sure where it is.
This happens up to 2.3.50-pre2. I suppose it has to do with the
SHARE_IRQ etc.
Any ideas?

Thanks
Andreas

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