netdev - [net-next-2.6 PATCH 6/9] ixgb: return PCI_ERS_RESULT

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Message-Id: <20090731191340.5470.79342.send-patch@aqua>
Date:	Fri, 31 Jul 2009 15:13:40 -0400
From:	Dean Nelson <dnelson@...hat.com>
To:	netdev@...r.kernel.org
Cc:	PJ Waskiewicz <peter.p.waskiewicz.jr@...el.com>,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next-2.6 PATCH 6/9] ixgb: return PCI_ERS_RESULT_DISCONNECT on permanent failure

PCI drivers that implement the struct pci_error_handlers' error_detected
callback should return PCI_ERS_RESULT_DISCONNECT if the state passed in is
pci_channel_io_perm_failure. This patch fixes the issue for ixgb.

Signed-off-by: Dean Nelson <dnelson@...hat.com>

---

This patch has not been tested, since I don't have the hardware to test it.
It is based on a few recent patches. See the following commits:

http://git.kernel.org/linus/c93b5a76d58656158d195a7df507ebc660010969
http://git.kernel.org/linus/eab633021c26025b34f36f79f0311d3d99f40ceb
http://git.kernel.org/linus/ef681ce1e8b3e63317cd724c200b2fd39286c005
http://git.kernel.org/linus/59ed6eecff4aa00c5c5d18ffd180acac108d596e
http://git.kernel.org/linus/3044b8d1ff8c05237652a692fb572a34e4d70146

 drivers/net/ixgb/ixgb_main.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c
index eb917f1..fad08ce 100644
--- a/drivers/net/ixgb/ixgb_main.c
+++ b/drivers/net/ixgb/ixgb_main.c
@@ -2227,6 +2227,11 @@ static pci_ers_result_t ixgb_io_error_detected(struct pci_dev *pdev,
 	struct net_device *netdev = pci_get_drvdata(pdev);
 	struct ixgb_adapter *adapter = netdev_priv(netdev);
 
+	netif_device_detach(netdev);
+
+	if (state == pci_channel_io_perm_failure)
+		return PCI_ERS_RESULT_DISCONNECT;
+
 	if (netif_running(netdev))
 		ixgb_down(adapter, true);
 
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