i40evf: add missing rtnl_lock() around i40evf_set_interrupt_capability

Orabug: 24568124

The function calls netif_set_real_num_(tx|rx)_queues, both of which
should be done only under rntl lock. Unfortunately the
i40evf_init_task did not hold the rtnl_lock as necessary. This patch
adds the locking needed.

Change-ID: Ib72a21c3ce22b71a226b16f9bbe0f5f8cc3e849b
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 62fe2a865e6ddc92f574bafacf8376613d8c08f2)
Signed-off-by: Brian Maly <brian.maly@oracle.com>
Signed-off-by: Dhaval Giani <dhaval.giani@oracle.com>

diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_main.c b/drivers/net/ethernet/intel/i40evf/i40evf_main.c
index ab8391d65ffb95b3854d35342909d47473eff5bd..e1d86213662a11eafe2236224f106ef5817f378d 100644 (file)
--- a/drivers/net/ethernet/intel/i40evf/i40evf_main.c
+++ b/drivers/net/ethernet/intel/i40evf/i40evf_main.c
@@ -1420,7 +1420,9 @@ int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter)
 {
        int err;
 
+       rtnl_lock();
        err = i40evf_set_interrupt_capability(adapter);
+       rtnl_unlock();
        if (err) {
                dev_err(&adapter->pdev->dev,
                        "Unable to setup interrupt capabilities\n");