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>

diff --git a/drivers/net/qlge/qlge.h b/drivers/net/qlge/qlge.h
index 9169c4c..780a387 100644 (file)
--- 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 87ec720..7e00029 100644 (file)
--- 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;
        }