iwl3945: remove sequence number assignment

Unlike agn, where the sequence numbers must
match with the TFD index, the driver for 3945
devices can use the sequence numbers provided
by mac80211 for QoS frames.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>

2 files changed, 2 insertions, 12 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 858a548330a5..8538af788a73 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -433,7 +433,7 @@ struct iwl_ht_agg {
 
 
 struct iwl_tid_data {
-        u16 seq_number;
+        u16 seq_number; /* agn only */
         u16 tfds_in_queue;
         struct iwl_ht_agg agg;
 };
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index 68b8a1af3be7..445406406bd0 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -473,10 +473,8 @@ static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
         u8 unicast;
         u8 sta_id;
         u8 tid = 0;
-        u16 seq_number = 0;
         __le16 fc;
         u8 wait_write_ptr = 0;
-        u8 *qc = NULL;
         unsigned long flags;
 
         spin_lock_irqsave(&priv->lock, flags);
@@ -519,16 +517,10 @@ static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
         IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
 
         if (ieee80211_is_data_qos(fc)) {
-                qc = ieee80211_get_qos_ctl(hdr);
+                u8 *qc = ieee80211_get_qos_ctl(hdr);
                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
                 if (unlikely(tid >= MAX_TID_COUNT))
                         goto drop;
-                seq_number = priv->stations[sta_id].tid[tid].seq_number &
-                                IEEE80211_SCTL_SEQ;
-                hdr->seq_ctrl = cpu_to_le16(seq_number) |
-                        (hdr->seq_ctrl &
-                                cpu_to_le16(IEEE80211_SCTL_FRAG));
-                seq_number += 0x10;
         }
 
         /* Descriptor for chosen Tx queue */
@@ -587,8 +579,6 @@ static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 
         if (!ieee80211_has_morefrags(hdr->frame_control)) {
                 txq->need_update = 1;
-                if (qc)
-                        priv->stations[sta_id].tid[tid].seq_number = seq_number;
         } else {
                 wait_write_ptr = 1;
                 txq->need_update = 0;