4.4-stable review patch. If anyone has any objections, please let me know.
------------------ [ Upstream commit 875328e4bce696e85edcda3c4b0ec80fd525e3a3 ] The init_hw function may fail, and in the case of VFs, it might change the number of maximum queues available. Thus, for every flow which checks init_hw, we need to ensure that we clear the queue scheme before, and initialize it after. The fm10k_io_slot_reset path will end up triggering a reset so fm10k_reinit needs this change. The fm10k_io_error_detected and fm10k_io_resume also need to properly clear and reinitialize the queue scheme. Signed-off-by: Jacob Keller <[email protected]> Reviewed-by: Bruce Allan <[email protected]> Tested-by: Krishneil Singh <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]> Signed-off-by: Sasha Levin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/net/ethernet/intel/fm10k/fm10k_pci.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) --- a/drivers/net/ethernet/intel/fm10k/fm10k_pci.c +++ b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c @@ -159,6 +159,9 @@ static void fm10k_reinit(struct fm10k_in fm10k_mbx_free_irq(interface); + /* free interrupts */ + fm10k_clear_queueing_scheme(interface); + /* delay any future reset requests */ interface->last_reset = jiffies + (10 * HZ); @@ -175,6 +178,12 @@ static void fm10k_reinit(struct fm10k_in goto reinit_err; } + err = fm10k_init_queueing_scheme(interface); + if (err) { + dev_err(&interface->pdev->dev, "init_queueing_scheme failed: %d\n", err); + goto reinit_err; + } + /* reassociate interrupts */ fm10k_mbx_request_irq(interface); @@ -2205,6 +2214,9 @@ static pci_ers_result_t fm10k_io_error_d if (netif_running(netdev)) fm10k_close(netdev); + /* free interrupts */ + fm10k_clear_queueing_scheme(interface); + fm10k_mbx_free_irq(interface); pci_disable_device(pdev); @@ -2277,6 +2289,12 @@ static void fm10k_io_resume(struct pci_d /* reset statistics starting values */ hw->mac.ops.rebind_hw_stats(hw, &interface->stats); + err = fm10k_init_queueing_scheme(interface); + if (err) { + dev_err(&interface->pdev->dev, "init_queueing_scheme failed: %d\n", err); + return; + } + /* reassociate interrupts */ fm10k_mbx_request_irq(interface);
