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Subjectbug in /net/core/dev.c

I found this bug in dev.c

It happens if register_netdevice is called before net_dev_init which can
happen from init functions,
when device drivers are compiled into the kernel.

The dev->refcnt will go up to 2 ( it should be 1) unregister_netdevice will
usually loop forever
waiting for the refcnt to drop to 1 when an attempt to unregister is done.

The printk in the bootmessages early initialization of device <blah> is
deferred is evidence of this behaviour occuring.

The small patch is below ,hope it is okay for you.

(See attached file: dev.c.2.4.5.patch)

D.J. Barrow Gnu/Linux for S/390 kernel developer
Phone: +49-(0)7031-16-2583
IBM Germany Lab, Schönaicherstr. 220, 71032 Böblingen
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