diff options
author | Ron Mercer <ron.mercer@qlogic.com> | 2007-11-07 21:59:06 (GMT) |
---|---|---|
committer | Jeff Garzik <jeff@garzik.org> | 2007-11-10 09:25:15 (GMT) |
commit | 3e23b7d3b54c07f1c4fee1ebc418d1a37248654e (patch) | |
tree | 8b2e236ded93e0c98176e1afb60b812b7577c438 /drivers/net/qla3xxx.c | |
parent | 32bee776533eea839f9499d985c1490b5ac98512 (diff) | |
download | linux-fsl-qoriq-3e23b7d3b54c07f1c4fee1ebc418d1a37248654e.tar.xz |
qla3xxx: bugfix: Move link state machine into a worker thread
The link state machine requires access to some resources that
are shared with the iSCSI function on the chip. (See iSCSI
driver at drivers/scsi/qla4xxx) If the interface is being
up/downed at a rapid pace this driver may need to sleep
waiting to get access to the common resources. For this we
are moving the state machine to run as a work thread.
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/qla3xxx.c')
-rw-r--r-- | drivers/net/qla3xxx.c | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/drivers/net/qla3xxx.c b/drivers/net/qla3xxx.c index 30adf72..4f0fd41 100644 --- a/drivers/net/qla3xxx.c +++ b/drivers/net/qla3xxx.c @@ -1645,8 +1645,11 @@ static int ql_finish_auto_neg(struct ql3_adapter *qdev) return 0; } -static void ql_link_state_machine(struct ql3_adapter *qdev) +static void ql_link_state_machine_work(struct work_struct *work) { + struct ql3_adapter *qdev = + container_of(work, struct ql3_adapter, link_state_work.work); + u32 curr_link_state; unsigned long hw_flags; @@ -1661,6 +1664,10 @@ static void ql_link_state_machine(struct ql3_adapter *qdev) "state.\n", qdev->ndev->name); spin_unlock_irqrestore(&qdev->hw_lock, hw_flags); + + /* Restart timer on 2 second interval. */ + mod_timer(&qdev->adapter_timer, jiffies + HZ * 1);\ + return; } @@ -1705,6 +1712,9 @@ static void ql_link_state_machine(struct ql3_adapter *qdev) break; } spin_unlock_irqrestore(&qdev->hw_lock, hw_flags); + + /* Restart timer on 2 second interval. */ + mod_timer(&qdev->adapter_timer, jiffies + HZ * 1); } /* @@ -3941,19 +3951,7 @@ static void ql_get_board_info(struct ql3_adapter *qdev) static void ql3xxx_timer(unsigned long ptr) { struct ql3_adapter *qdev = (struct ql3_adapter *)ptr; - - if (test_bit(QL_RESET_ACTIVE,&qdev->flags)) { - printk(KERN_DEBUG PFX - "%s: Reset in progress.\n", - qdev->ndev->name); - goto end; - } - - ql_link_state_machine(qdev); - - /* Restart timer on 2 second interval. */ -end: - mod_timer(&qdev->adapter_timer, jiffies + HZ * 1); + queue_delayed_work(qdev->workqueue, &qdev->link_state_work, 0); } static int __devinit ql3xxx_probe(struct pci_dev *pdev, @@ -4103,6 +4101,7 @@ static int __devinit ql3xxx_probe(struct pci_dev *pdev, qdev->workqueue = create_singlethread_workqueue(ndev->name); INIT_DELAYED_WORK(&qdev->reset_work, ql_reset_work); INIT_DELAYED_WORK(&qdev->tx_timeout_work, ql_tx_timeout_work); + INIT_DELAYED_WORK(&qdev->link_state_work, ql_link_state_machine_work); init_timer(&qdev->adapter_timer); qdev->adapter_timer.function = ql3xxx_timer; |