[PATCH 3.15 025/109] igb: do a reset on SR-IOV re-init if device is down

Greg Kroah-Hartman
2014-07-26T19:38:15Z

From: Stefan Assmann <sassmann@kpanic.de>

commit 76252723e88681628a3dbb9c09c963e095476f73 upstream.

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.

Signed-off-by: Stefan Assmann <sassmann@kpanic.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/net/ethernet/intel/igb/igb_main.c | 2 ++
1 file changed, 2 insertions(+)

--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -7581,6 +7581,8 @@ static int igb_sriov_reinit(struct pci_d

if (netif_running(netdev))
igb_close(netdev);
+ else
+ igb_reset(adapter);

igb_clear_interrupt_scheme(adapter);