ixgbe: add missing rtnl_lock in PM resume path

Upon resume from standby, ixgbe may trigger the ASSERT_RTNL() in
netif_set_real_num_tx_queues(). The call stack is:
	netif_set_real_num_tx_queues
	ixgbe_set_num_queues
	ixgbe_init_interrupt_scheme
	ixgbe_resume

Signed-off-by: Benjamin Poirier <bpoirier@suse.de>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index dac7c01f833230ae5112fb726ed042629903ce57..9e2be8c45c2da67b1dacb0a74799efd5f5cbefc6 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -4836,7 +4836,9 @@ static int ixgbe_resume(struct pci_dev *pdev)
 
        pci_wake_from_d3(pdev, false);
 
+       rtnl_lock();
        err = ixgbe_init_interrupt_scheme(adapter);
+       rtnl_unlock();
        if (err) {
                e_dev_err("Cannot initialize interrupts for device\n");
                return err;