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authorRon Mercer <ron.mercer@qlogic.com>2010-02-03 07:24:12 +0000
committerDavid S. Miller <davem@davemloft.net>2010-02-03 20:06:03 -0800
commit4bbd1a1903639f826215d76af74f4901efc34daa (patch)
treed578f3ce4ec90708260a376db46cf769f998c890 /drivers/net/qlge
parenta112fd4ce3ed965dfb8dc6791622cb4f25ba3619 (diff)
qlge: Add check for eeh failure when closing device.
Fix crash where resources are freed twice on an eeh recovery failure. If eeh recovery fails we set a flag to indicate to close() that resources have been freed. Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/qlge')
-rw-r--r--drivers/net/qlge/qlge.h1
-rw-r--r--drivers/net/qlge/qlge_main.c14
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/net/qlge/qlge.h b/drivers/net/qlge/qlge.h
index 9169c4cf413a..780a38731bcc 100644
--- a/drivers/net/qlge/qlge.h
+++ b/drivers/net/qlge/qlge.h
@@ -2005,6 +2005,7 @@ enum {
QL_SELFTEST = 9,
QL_LB_LINK_UP = 10,
QL_FRC_COREDUMP = 11,
+ QL_EEH_FATAL = 12,
};
/* link_status bit definitions */
diff --git a/drivers/net/qlge/qlge_main.c b/drivers/net/qlge/qlge_main.c
index 87ec72064158..7e000295f359 100644
--- a/drivers/net/qlge/qlge_main.c
+++ b/drivers/net/qlge/qlge_main.c
@@ -3929,6 +3929,16 @@ static int qlge_close(struct net_device *ndev)
{
struct ql_adapter *qdev = netdev_priv(ndev);
+ /* If we hit pci_channel_io_perm_failure
+ * failure condition, then we already
+ * brought the adapter down.
+ */
+ if (test_bit(QL_EEH_FATAL, &qdev->flags)) {
+ QPRINTK(qdev, DRV, ERR, "EEH fatal did unload.\n");
+ clear_bit(QL_EEH_FATAL, &qdev->flags);
+ return 0;
+ }
+
/*
* Wait for device to recover from a reset.
* (Rarely happens, but possible.)
@@ -4677,6 +4687,7 @@ static pci_ers_result_t qlge_io_error_detected(struct pci_dev *pdev,
enum pci_channel_state state)
{
struct net_device *ndev = pci_get_drvdata(pdev);
+ struct ql_adapter *qdev = netdev_priv(ndev);
switch (state) {
case pci_channel_io_normal:
@@ -4690,6 +4701,8 @@ static pci_ers_result_t qlge_io_error_detected(struct pci_dev *pdev,
case pci_channel_io_perm_failure:
dev_err(&pdev->dev,
"%s: pci_channel_io_perm_failure.\n", __func__);
+ ql_eeh_close(ndev);
+ set_bit(QL_EEH_FATAL, &qdev->flags);
return PCI_ERS_RESULT_DISCONNECT;
}
@@ -4720,6 +4733,7 @@ static pci_ers_result_t qlge_io_slot_reset(struct pci_dev *pdev)
if (ql_adapter_reset(qdev)) {
QPRINTK(qdev, DRV, ERR, "reset FAILED!\n");
+ set_bit(QL_EEH_FATAL, &qdev->flags);
return PCI_ERS_RESULT_DISCONNECT;
}