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Date: Fri, 11 Apr 2014 06:52:53 -0700 From: Jeff Kirsher <jeffrey.t.kirsher@...el.com> To: davem@...emloft.net Cc: Mark Rustad <mark.d.rustad@...el.com>, netdev@...r.kernel.org, gospo@...hat.com, sassmann@...hat.com, Jeff Kirsher <jeffrey.t.kirsher@...el.com> Subject: [net 03/13] ixgbevf: Add bit to mark work queue initialization From: Mark Rustad <mark.d.rustad@...el.com> An indication of work queue initialization is needed. This is because register accesses prior to that time can detect a removal and attempt to schedule the watchdog task. Adding the __IXGBEVF_WORK_INIT bit allows this to be checked and if not set prevent the watchdog task scheduling. By checking for a removal right after initialization, the probe can be failed at that point without getting the watchdog task involved. Signed-off-by: Mark Rustad <mark.d.rustad@...el.com> Tested-by: Phil Schmitt <phillip.j.schmitt@...el.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com> --- drivers/net/ethernet/intel/ixgbevf/ixgbevf.h | 1 + drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 11 ++++++++++- 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h index e7e7d69..a0a1de9 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h @@ -421,6 +421,7 @@ enum ixbgevf_state_t { __IXGBEVF_DOWN, __IXGBEVF_DISABLED, __IXGBEVF_REMOVING, + __IXGBEVF_WORK_INIT, }; struct ixgbevf_cb { diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index 4ba139b..905c26c 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -107,7 +107,8 @@ static void ixgbevf_remove_adapter(struct ixgbe_hw *hw) return; hw->hw_addr = NULL; dev_err(&adapter->pdev->dev, "Adapter removed\n"); - schedule_work(&adapter->watchdog_task); + if (test_bit(__IXGBEVF_WORK_INIT, &adapter->state)) + schedule_work(&adapter->watchdog_task); } static void ixgbevf_check_remove(struct ixgbe_hw *hw, u32 reg) @@ -3573,8 +3574,13 @@ static int ixgbevf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) adapter->watchdog_timer.function = ixgbevf_watchdog; adapter->watchdog_timer.data = (unsigned long)adapter; + if (IXGBE_REMOVED(hw->hw_addr)) { + err = -EIO; + goto err_sw_init; + } INIT_WORK(&adapter->reset_task, ixgbevf_reset_task); INIT_WORK(&adapter->watchdog_task, ixgbevf_watchdog_task); + set_bit(__IXGBEVF_WORK_INIT, &adapter->state); err = ixgbevf_init_interrupt_scheme(adapter); if (err) @@ -3667,6 +3673,9 @@ static pci_ers_result_t ixgbevf_io_error_detected(struct pci_dev *pdev, struct net_device *netdev = pci_get_drvdata(pdev); struct ixgbevf_adapter *adapter = netdev_priv(netdev); + if (!test_bit(__IXGBEVF_WORK_INIT, &adapter->state)) + return PCI_ERS_RESULT_DISCONNECT; + rtnl_lock(); netif_device_detach(netdev); -- 1.9.0 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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