sfc: harden driver against MC resets during initial probe

This is mainly to prepare for a future overlay networking patch that
 could cause an MC reset at probe time if the UDP tunnel port list is
 set immediately upon driver load.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 64 insertions, 35 deletions

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c