From a498036170a28f5f1591747b26c8b847c01bfbac Mon Sep 17 00:00:00 2001 From: Mark Rustad Date: Fri, 28 Oct 2016 10:46:39 -0700 Subject: [PATCH] ixgbevf: Handle previously-freed msix_entries Orabug: 24568240 The msix_entries memory can be freed by a previous suspend or remove, so don't crash on close when it isn't there. Also only clear the interrupts when the interface is up, because there aren't any when it is not up. Signed-off-by: Mark Rustad Tested-by: Krishneil Singh Signed-off-by: Jeff Kirsher (cherry picked from commit eeffceee421b17a1d484679d738f278fbaa01384) Signed-off-by: Brian Maly --- drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index 70955cce22cc..2e830ccecd06 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -1494,6 +1494,9 @@ static void ixgbevf_free_irq(struct ixgbevf_adapter *adapter) { int i, q_vectors; + if (!adapter->msix_entries) + return; + q_vectors = adapter->num_msix_vectors; i = q_vectors - 1; @@ -2551,6 +2554,9 @@ static void ixgbevf_free_q_vectors(struct ixgbevf_adapter *adapter) **/ static void ixgbevf_reset_interrupt_capability(struct ixgbevf_adapter *adapter) { + if (!adapter->msix_entries) + return; + pci_disable_msix(adapter->pdev); kfree(adapter->msix_entries); adapter->msix_entries = NULL; @@ -3817,11 +3823,10 @@ static int ixgbevf_suspend(struct pci_dev *pdev, pm_message_t state) ixgbevf_free_irq(adapter); ixgbevf_free_all_tx_resources(adapter); ixgbevf_free_all_rx_resources(adapter); + ixgbevf_clear_interrupt_scheme(adapter); rtnl_unlock(); } - ixgbevf_clear_interrupt_scheme(adapter); - #ifdef CONFIG_PM retval = pci_save_state(pdev); if (retval) -- 2.50.1