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| author | Divy Le Ray <divy@chelsio.com> | 2008-09-25 14:05:28 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-10-08 15:57:17 -0700 |
| commit | 0ca41c0413a4d9ca58767d53d23accea9aa1cdef (patch) | |
| tree | c94c8bc0ffbe971cddcb894df984c315b62f7fde | |
| parent | 822f1a57d2ad957ae16b987115251539876aef26 (diff) | |
| download | op-kernel-dev-0ca41c0413a4d9ca58767d53d23accea9aa1cdef.zip op-kernel-dev-0ca41c0413a4d9ca58767d53d23accea9aa1cdef.tar.gz | |
[2.6.28,1/1] cxgb3 - fix race in EEH
A SGE queue set timer might access registers while in EEH recovery,
triggering an EEH error loop. Stop all timers early in EEH process.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/cxgb3/adapter.h | 1 | ||||
| -rw-r--r-- | drivers/net/cxgb3/cxgb3_main.c | 5 | ||||
| -rw-r--r-- | drivers/net/cxgb3/sge.c | 21 |
3 files changed, 24 insertions, 3 deletions
diff --git a/drivers/net/cxgb3/adapter.h b/drivers/net/cxgb3/adapter.h index 4f5cc69..e9da285 100644 --- a/drivers/net/cxgb3/adapter.h +++ b/drivers/net/cxgb3/adapter.h @@ -284,6 +284,7 @@ void t3_os_link_changed(struct adapter *adapter, int port_id, int link_status, void t3_sge_start(struct adapter *adap); void t3_sge_stop(struct adapter *adap); +void t3_stop_sge_timers(struct adapter *adap); void t3_free_sge_resources(struct adapter *adap); void t3_sge_err_intr_handler(struct adapter *adapter); irq_handler_t t3_intr_handler(struct adapter *adap, int polling); diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c index 5447f3e..d355c826 100644 --- a/drivers/net/cxgb3/cxgb3_main.c +++ b/drivers/net/cxgb3/cxgb3_main.c @@ -479,6 +479,7 @@ static int setup_sge_qsets(struct adapter *adap) irq_idx, &adap->params.sge.qset[qset_idx], ntxq, dev); if (err) { + t3_stop_sge_timers(adap); t3_free_sge_resources(adap); return err; } @@ -2449,6 +2450,9 @@ static pci_ers_result_t t3_io_error_detected(struct pci_dev *pdev, test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) offload_close(&adapter->tdev); + /* Stop SGE timers */ + t3_stop_sge_timers(adapter); + adapter->flags &= ~FULL_INIT_DONE; pci_disable_device(pdev); @@ -2801,6 +2805,7 @@ static void __devexit remove_one(struct pci_dev *pdev) if (test_bit(i, &adapter->registered_device_map)) unregister_netdev(adapter->port[i]); + t3_stop_sge_timers(adapter); t3_free_sge_resources(adapter); cxgb_disable_msi(adapter); diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c index 89efd04..7346a8e 100644 --- a/drivers/net/cxgb3/sge.c +++ b/drivers/net/cxgb3/sge.c @@ -603,9 +603,6 @@ static void t3_free_qset(struct adapter *adapter, struct sge_qset *q) int i; struct pci_dev *pdev = adapter->pdev; - if (q->tx_reclaim_timer.function) - del_timer_sync(&q->tx_reclaim_timer); - for (i = 0; i < SGE_RXQ_PER_SET; ++i) if (q->fl[i].desc) { spin_lock_irq(&adapter->sge.reg_lock); @@ -3009,6 +3006,24 @@ err: } /** + * t3_stop_sge_timers - stop SGE timer call backs + * @adap: the adapter + * + * Stops each SGE queue set's timer call back + */ +void t3_stop_sge_timers(struct adapter *adap) +{ + int i; + + for (i = 0; i < SGE_QSETS; ++i) { + struct sge_qset *q = &adap->sge.qs[i]; + + if (q->tx_reclaim_timer.function) + del_timer_sync(&q->tx_reclaim_timer); + } +} + +/** * t3_free_sge_resources - free SGE resources * @adap: the adapter * |
