diff options
| author | Zhu Yi <yi.zhu@intel.com> | 2008-12-02 12:14:04 -0800 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-12-05 09:35:55 -0500 |
| commit | f3f911d1773d31f11038d90b04244bc3986c4ccd (patch) | |
| tree | 83e5f2f8faf67c817b0617241a69e87cc6be1e3b /drivers/net/wireless/iwlwifi/iwl-tx.c | |
| parent | 74221d07408c473721cce853ef4e0e66c0b326ba (diff) | |
iwlwifi: fix DMA channel number in iwl_txq_ctx_stop
The patch fixes the misuse of DMA channel number by Tx queue number in
iwl_tx_ctx_stop().
The problem was originally reported by Wu Fengguang who complains
iwlagn driver takes too long time when issuing `ifconfig wlan0 down`.
The patch now decreases the interface bring down time from 2 seconds
to 0.8 second.
This fixes bugs:
http://bugzilla.kernel.org/show_bug.cgi?id=11956
http://www.intellinuxwireless.org/bugzilla/show_bug.cgi?id=1790
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Tested-by: Fengguang Wu <fengguang.wu@intel.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-tx.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-tx.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c index e045dfeaa1f..18d6cf67d9b 100644 --- a/drivers/net/wireless/iwlwifi/iwl-tx.c +++ b/drivers/net/wireless/iwlwifi/iwl-tx.c @@ -611,7 +611,7 @@ int iwl_txq_ctx_reset(struct iwl_priv *priv) */ void iwl_txq_ctx_stop(struct iwl_priv *priv) { - int txq_id; + int ch; unsigned long flags; /* Turn off all Tx DMA fifos */ @@ -624,12 +624,11 @@ void iwl_txq_ctx_stop(struct iwl_priv *priv) priv->cfg->ops->lib->txq_set_sched(priv, 0); /* Stop each Tx DMA channel, and wait for it to be idle */ - for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) { - iwl_write_direct32(priv, - FH_TCSR_CHNL_TX_CONFIG_REG(txq_id), 0x0); + for (ch = 0; ch < priv->hw_params.dma_chnl_num; ch++) { + iwl_write_direct32(priv, FH_TCSR_CHNL_TX_CONFIG_REG(ch), 0x0); iwl_poll_direct_bit(priv, FH_TSSR_TX_STATUS_REG, - FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE - (txq_id), 200); + FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(ch), + 200); } iwl_release_nic_access(priv); spin_unlock_irqrestore(&priv->lock, flags); |