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

From: Greg Kroah-Hartman
Date: Sat Jul 26 2014 - 15:38:20 EST

3.15-stable review patch. If anyone has any objections, please let me know.


From: Stefan Assmann <sassmann@xxxxxxxxx>

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@xxxxxxxxx>
Tested-by: Aaron Brown <aaron.f.brown@xxxxxxxxx>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

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))
+ else
+ igb_reset(adapter);


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