iwlwifi: memory allocation optimization

This patch optimizes memory allocation. The cmd member of
iwl_tx_queue was allocated previously as a continuous block
of memory. This patch allocates separate memory chunks for each command
and maps/unmaps these chunks in the run time.

Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 848786ab7916..c19db438306c 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -135,8 +135,7 @@ struct iwl_tx_info {
 struct iwl_tx_queue {
         struct iwl_queue q;
         struct iwl_tfd_frame *bd;
-        struct iwl_cmd *cmd;
-        dma_addr_t dma_addr_cmd;
+        struct iwl_cmd *cmd[TFD_TX_CMD_SLOTS];
         struct iwl_tx_info *txb;
         int need_update;
         int sched_retry;