fm10k_open requires rtnl_lock to be held.

Cc: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
Cc: Jesse Brandeburg <jesse.brandeb...@intel.com>
Cc: Shannon Nelson <shannon.nel...@intel.com>
Cc: Carolyn Wyborny <carolyn.wybo...@intel.com>
Cc: Don Skidmore <donald.c.skidm...@intel.com>
Cc: Bruce Allan <bruce.w.al...@intel.com>
Cc: John Ronciak <john.ronc...@intel.com>
Cc: Mitch Williams <mitch.a.willi...@intel.com>
Signed-off-by: Hannes Frederic Sowa <han...@stressinduktion.org>
---
 drivers/net/ethernet/intel/fm10k/fm10k_pci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_pci.c 
b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c
index f0992950e228eb..04304d9a633935 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_pci.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c
@@ -2362,8 +2362,10 @@ static void fm10k_io_resume(struct pci_dev *pdev)
        /* reset clock */
        fm10k_ts_reset(interface);
 
+       rtnl_lock();
        if (netif_running(netdev))
                err = fm10k_open(netdev);
+       rtnl_unlock();
 
        /* final check of hardware state before registering the interface */
        err = err ? : fm10k_hw_ready(interface);
-- 
2.5.5

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