iwl3945: disable all tx fifos

Disable the all the tx fifos while stopping the tx queues.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c
index b188a02..9f18b4c 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.c
@@ -1219,6 +1219,7 @@
 
 	/* stop SCD */
 	iwl_write_prph(priv, ALM_SCD_MODE_REG, 0);
+	iwl_write_prph(priv, ALM_SCD_TXFACT_REG, 0);
 
 	/* reset TFD queues */
 	for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {