From: Stefan Assmann <sassmann@kpanic.de>
Date: Thu, 10 Jul 2014 10:29:39 +0000 (-0700)
Subject: igb: do a reset on SR-IOV re-init if device is down
X-Git-Tag: submit/tizen/20160422.055611~1^2~99^2~18^2~796
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f09e424e436c56fd8c4ebd182d407851b7f42d83;p=sdk%2Femulator%2Femulator-kernel.git

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

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>
---

diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 743f993e7d02..5ca8c479666e 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -7505,6 +7505,8 @@ 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);