diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2011-08-26 10:11:30 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-08-29 23:33:01 +0400 |
| commit | f22be624c29b7f714e5a82ad13dc33a0cd1443a2 (patch) | |
| tree | c601ad06c781e30cc2973e6c712d88278b3c7975 /drivers/net/wireless/iwlwifi/iwl-trans.c | |
| parent | 5f178cd2ebe8ac196b245428c574f1def1964b14 (diff) | |
| download | linux-f22be624c29b7f714e5a82ad13dc33a0cd1443a2.tar.xz | |
iwlagn: move check_stuck_queue to transport layer
This one is really transport related.
==== moves Stanislaw's code to BSD area ====
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-trans.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-trans.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.c b/drivers/net/wireless/iwlwifi/iwl-trans.c index 7b868c7b523a..646170400e16 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans.c +++ b/drivers/net/wireless/iwlwifi/iwl-trans.c @@ -1475,6 +1475,33 @@ static int iwl_trans_pcie_wait_tx_queue_empty(struct iwl_trans *trans) return ret; } +/* + * On every watchdog tick we check (latest) time stamp. If it does not + * change during timeout period and queue is not empty we reset firmware. + */ +static int iwl_trans_pcie_check_stuck_queue(struct iwl_trans *trans, int cnt) +{ + struct iwl_tx_queue *txq = &priv(trans)->txq[cnt]; + struct iwl_queue *q = &txq->q; + unsigned long timeout; + + if (q->read_ptr == q->write_ptr) { + txq->time_stamp = jiffies; + return 0; + } + + timeout = txq->time_stamp + + msecs_to_jiffies(hw_params(trans).wd_timeout); + + if (time_after(jiffies, timeout)) { + IWL_ERR(trans, "Queue %d stuck for %u ms.\n", q->id, + hw_params(trans).wd_timeout); + return 1; + } + + return 0; +} + #ifdef CONFIG_IWLWIFI_DEBUGFS /* create and remove of files */ #define DEBUGFS_ADD_FILE(name, parent, mode) do { \ @@ -2055,6 +2082,7 @@ const struct iwl_trans_ops trans_ops_pcie = { .dbgfs_register = iwl_trans_pcie_dbgfs_register, .wait_tx_queue_empty = iwl_trans_pcie_wait_tx_queue_empty, + .check_stuck_queue = iwl_trans_pcie_check_stuck_queue, .suspend = iwl_trans_pcie_suspend, .resume = iwl_trans_pcie_resume, |