4.4-stable review patch. If anyone has any objections, please let me know.
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From: Emil Tantilov emil.s.tantilov@intel.com
[ Upstream commit 126db13fa0e6d05c9f94e0125f61e773bd5ab079 ]
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 Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -9221,7 +9221,7 @@ 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); @@ -9291,10 +9291,12 @@ static void ixgbe_io_resume(struct pci_d }
#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 = {