netdev - [PATCH net-next] igb: do a reset on SR-IOV re-init if device is down

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Message-Id: <1404215149-20634-1-git-send-email-sassmann@kpanic.de>
Date:	Tue,  1 Jul 2014 13:45:49 +0200
From:	Stefan Assmann <sassmann@...nic.de>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, e1000-devel@...ts.sourceforge.net,
	carolyn.wyborny@...el.com, jeffrey.t.kirsher@...el.com,
	sassmann@...nic.de
Subject: [PATCH net-next] 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.

Signed-off-by: Stefan Assmann <sassmann@...nic.de>
---
 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 f145adb..6f3cf45 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -7578,6 +7578,8 @@ 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);
 
-- 
1.9.3

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