enic: unmask intr only when napi is complete
In case of busy poll, napi_complete_done returns false and does not dequeue napi. In this case do not unmask the intr. We are guaranteed napi is called again. This reduces unnecessary iowrites. Signed-off-by: NGovindarajulu Varadarajan <gvaradar@cisco.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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