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iwlwifi: fix DMA channel number in iwl_txq_ctx_stop

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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>
This commit is contained in:
Zhu Yi
2008-12-02 12:14:04 -08:00
committed by John W. Linville
parent 74221d0740
commit f3f911d177
4 changed files with 10 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/wireless/iwlwifi/iwl-dev.h
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@@ -508,6 +508,7 @@ struct iwl_sensitivity_ranges {
/**
* struct iwl_hw_params
* @max_txq_num: Max # Tx queues supported
* @dma_chnl_num: Number of Tx DMA/FIFO channels
* @scd_bc_tbls_size: size of scheduler byte count tables
* @tx/rx_chains_num: Number of TX/RX chains
* @valid_tx/rx_ant: usable antennas
@@ -525,7 +526,8 @@ struct iwl_sensitivity_ranges {
* @struct iwl_sensitivity_ranges: range of sensitivity values
*/
struct iwl_hw_params {
u16 max_txq_num;
u8 max_txq_num;
u8 dma_chnl_num;
u16 scd_bc_tbls_size;
u8 tx_chains_num;
u8 rx_chains_num;