From b19cf6eea9e2a497e6475fd02c0703f0b3a6d083 Mon Sep 17 00:00:00 2001
From: Emil Tantilov <emil.s.tantilov@intel.com>
Date: Wed, 16 Nov 2016 11:25:34 -0800
Subject: [PATCH] ixgbevf: fix AER error handling
Make sure that we free the IRQs in ixgbevf_io_error_detected() when
responding to an PCIe AER error and also restore them when the
interface recovers from it.
Previously it was possible to trigger BUG_ON() check in free_msix_irqs()
in the case where we call ixgbevf_remove() after a failed recovery from
AER error because the interrupts were not freed.
Also moved the down and free functions into ixgbevf_close_suspend()
same as with ixgbe.
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
.../net/ethernet/intel/ixgbevf/ixgbevf_main.c | 43 +++++++++++--------
1 file changed, 25 insertions(+), 18 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 8574f212a67e8..a78e4901118b4 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -3227,6 +3227,21 @@ err_setup_reset:
return err;
}
+/**
+ * ixgbevf_close_suspend - actions necessary to both suspend and close flows
+ * @adapter: the private adapter struct
+ *
+ * This function should contain the necessary work common to both suspending
+ * and closing of the device.
+ */
+static void ixgbevf_close_suspend(struct ixgbevf_adapter *adapter)
+{
+ ixgbevf_down(adapter);
+ ixgbevf_free_irq(adapter);
+ ixgbevf_free_all_tx_resources(adapter);
+ ixgbevf_free_all_rx_resources(adapter);
+}
+
/**
* ixgbevf_close - Disables a network interface
* @netdev: network interface device structure
@@ -3242,14 +3257,8 @@ int ixgbevf_close(struct net_device *netdev)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
- if (!netif_device_present(netdev))
- return 0;
-
- ixgbevf_down(adapter);
- ixgbevf_free_irq(adapter);
-
- ixgbevf_free_all_tx_resources(adapter);
- ixgbevf_free_all_rx_resources(adapter);
+ if (netif_device_present(netdev))
+ ixgbevf_close_suspend(adapter);
return 0;
}
@@ -3806,13 +3815,10 @@ static int ixgbevf_suspend(struct pci_dev *pdev, pm_message_t state)
rtnl_lock();
netif_device_detach(netdev);
- if (netif_running(netdev)) {
- ixgbevf_down(adapter);
- ixgbevf_free_irq(adapter);
- ixgbevf_free_all_tx_resources(adapter);
- ixgbevf_free_all_rx_resources(adapter);
- ixgbevf_clear_interrupt_scheme(adapter);
- }
+ if (netif_running(netdev))
+ ixgbevf_close_suspend(adapter);
+
+ ixgbevf_clear_interrupt_scheme(adapter);
rtnl_unlock();
#ifdef CONFIG_PM
@@ -4251,7 +4257,7 @@ static pci_ers_result_t ixgbevf_io_error_detected(struct pci_dev *pdev,
}
if (netif_running(netdev))
- ixgbevf_down(adapter);
+ ixgbevf_close_suspend(adapter);
if (!test_and_set_bit(__IXGBEVF_DISABLED, &adapter->state))
pci_disable_device(pdev);
@@ -4299,12 +4305,13 @@ static pci_ers_result_t ixgbevf_io_slot_reset(struct pci_dev *pdev)
static void ixgbevf_io_resume(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
- struct ixgbevf_adapter *adapter = netdev_priv(netdev);
+ rtnl_lock();
if (netif_running(netdev))
- ixgbevf_up(adapter);
+ ixgbevf_open(netdev);
netif_device_attach(netdev);
+ rtnl_unlock();
}
/* PCI Error Recovery (ERS) */
--
2.30.2