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ixgbe: Add bit to mark service task initialization

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There needs to be an indication when the service task has been
initialized. This is because register access prior to that time
can detect a removal and attempt to schedule the service task.
Adding the __IXGBE_SERVICE_INITED bit allows this to be checked
and if not set prevent the service task scheduling. By checking
for a removal right after initialization, the probe can be failed
at that point without getting the service task involved.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Mark Rustad 2014-03-12 00:38:40 +00:00 committed by Jeff Kirsher
parent 6d39d589bb
commit 58cf663f0e
2 changed files with 15 additions and 1 deletions
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1
drivers/net/ethernet/intel/ixgbe/ixgbe.h
View File

@ -811,6 +811,7 @@ enum ixgbe_state_t {
__IXGBE_DISABLED,
__IXGBE_REMOVING,
__IXGBE_SERVICE_SCHED,
__IXGBE_SERVICE_INITED,
__IXGBE_IN_SFP_INIT,
__IXGBE_PTP_RUNNING,
__IXGBE_PTP_TX_IN_PROGRESS,

15
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
View File

@ -297,7 +297,8 @@ static void ixgbe_remove_adapter(struct ixgbe_hw *hw)
return;
hw->hw_addr = NULL;
e_dev_err("Adapter removed\n");
ixgbe_service_event_schedule(adapter);
if (test_bit(__IXGBE_SERVICE_INITED, &adapter->state))
ixgbe_service_event_schedule(adapter);
}
void ixgbe_check_remove(struct ixgbe_hw *hw, u32 reg)
@ -8023,6 +8024,10 @@ static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
/* EEPROM */
memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops));
eec = IXGBE_READ_REG(hw, IXGBE_EEC);
if (ixgbe_removed(hw->hw_addr)) {
err = -EIO;
goto err_ioremap;
}
/* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
if (!(eec & (1 << 8)))
hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic;
@ -8185,7 +8190,12 @@ static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
setup_timer(&adapter->service_timer, &ixgbe_service_timer,
(unsigned long) adapter);
if (ixgbe_removed(hw->hw_addr)) {
err = -EIO;
goto err_sw_init;
}
INIT_WORK(&adapter->service_task, ixgbe_service_task);
set_bit(__IXGBE_SERVICE_INITED, &adapter->state);
clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state);
err = ixgbe_init_interrupt_scheme(adapter);
@ -8494,6 +8504,9 @@ static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev,
skip_bad_vf_detection:
#endif /* CONFIG_PCI_IOV */
if (!test_bit(__IXGBE_SERVICE_INITED, &adapter->state))
return PCI_ERS_RESULT_DISCONNECT;
rtnl_lock();
netif_device_detach(netdev);