igb: do a reset on SR-IOV re-init if device is down

To properly re-initialize SR-IOV it is necessary to reset the device
even if it is already down. Not doing this may result in Tx unit hangs.

Cc: stable <[email protected]>
Signed-off-by: Stefan Assmann <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 57a96e00df8cc5418f2296b8668bc2c708892bb8..a9537ba7a5a072630acc8842b875d98428922bb5 100644 (file)
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -7592,6 +7592,8 @@ static int igb_sriov_reinit(struct pci_dev *dev)
 
        if (netif_running(netdev))
                igb_close(netdev);
+       else
+               igb_reset(adapter);
 
        igb_clear_interrupt_scheme(adapter);