[PATCH 3.12 27/94] igb: do a reset on SR-IOV re-init if device is down

From: Jiri Slaby
Date: Wed Jul 30 2014 - 08:37:57 EST

From: Stefan Assmann <sassmann@xxxxxxxxx>

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


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: Jiri Slaby <jslaby@xxxxxxx>
drivers/net/ethernet/intel/igb/igb_main.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index d366df533726..76e43c417a31 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -7295,6 +7295,8 @@ static int igb_sriov_reinit(struct pci_dev *dev)

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



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