s390/qeth: defer IPv6 address notifier events
The inet6addr_chain is atomic. So instead of starting the cmd IO for SETIP / DELIP straight from the notifier callback, run it from a workqueue. This is the last step towards removal of cmd IO completion polling. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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