From: Emil Tantilov <emil.s.tantilov@intel.com>
Date: Wed, 16 Nov 2016 17:48:02 +0000 (-0800)
Subject: ixgbe: fix AER error handling
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=126db13fa0e6d05c9f94e0125f61e773bd5ab079;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

ixgbe: fix AER error handling

Make sure that we free the IRQs in ixgbe_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 ixgbe_remove() after a failed recovery from
AER error because the interrupts were not freed.

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>
---

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 476f01282588..9ca167c5d1fa 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -10082,7 +10082,7 @@ skip_bad_vf_detection:
 	}
 
 	if (netif_running(netdev))
-		ixgbe_down(adapter);
+		ixgbe_close_suspend(adapter);
 
 	if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state))
 		pci_disable_device(pdev);
@@ -10152,10 +10152,12 @@ static void ixgbe_io_resume(struct pci_dev *pdev)
 	}
 
 #endif
+	rtnl_lock();
 	if (netif_running(netdev))
-		ixgbe_up(adapter);
+		ixgbe_open(netdev);
 
 	netif_device_attach(netdev);
+	rtnl_unlock();
 }
 
 static const struct pci_error_handlers ixgbe_err_handler = {