Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
[linux-2.6.git] / drivers / net / wireless / rt2x00 / rt61pci.c
index 98af4d2..b64f2f5 100644 (file)
@@ -2362,6 +2362,7 @@ static int rt61pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
 {
        struct rt2x00_dev *rt2x00dev = hw->priv;
        struct rt2x00_intf *intf = vif_to_intf(control->vif);
+       struct queue_entry_priv_pci_tx *priv_tx;
        struct skb_frame_desc *skbdesc;
        unsigned int beacon_base;
        u32 reg;
@@ -2369,21 +2370,8 @@ static int rt61pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
        if (unlikely(!intf->beacon))
                return -ENOBUFS;
 
-       /*
-        * We need to append the descriptor in front of the
-        * beacon frame.
-        */
-       if (skb_headroom(skb) < intf->beacon->queue->desc_size) {
-               if (pskb_expand_head(skb, intf->beacon->queue->desc_size,
-                                    0, GFP_ATOMIC))
-                       return -ENOMEM;
-       }
-
-       /*
-        * Add the descriptor in front of the skb.
-        */
-       skb_push(skb, intf->beacon->queue->desc_size);
-       memset(skb->data, 0, intf->beacon->queue->desc_size);
+       priv_tx = intf->beacon->priv_data;
+       memset(priv_tx->desc, 0, intf->beacon->queue->desc_size);
 
        /*
         * Fill in skb descriptor
@@ -2391,9 +2379,9 @@ static int rt61pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
        skbdesc = get_skb_frame_desc(skb);
        memset(skbdesc, 0, sizeof(*skbdesc));
        skbdesc->flags |= FRAME_DESC_DRIVER_GENERATED;
-       skbdesc->data = skb->data + intf->beacon->queue->desc_size;
-       skbdesc->data_len = skb->len - intf->beacon->queue->desc_size;
-       skbdesc->desc = skb->data;
+       skbdesc->data = skb->data;
+       skbdesc->data_len = skb->len;
+       skbdesc->desc = priv_tx->desc;
        skbdesc->desc_len = intf->beacon->queue->desc_size;
        skbdesc->entry = intf->beacon;
 
@@ -2414,7 +2402,10 @@ static int rt61pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
        rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
        beacon_base = HW_BEACON_OFFSET(intf->beacon->entry_idx);
        rt2x00pci_register_multiwrite(rt2x00dev, beacon_base,
-                                     skb->data, skb->len);
+                                     skbdesc->desc, skbdesc->desc_len);
+       rt2x00pci_register_multiwrite(rt2x00dev,
+                                     beacon_base + skbdesc->desc_len,
+                                     skbdesc->data, skbdesc->data_len);
        rt61pci_kick_tx_queue(rt2x00dev, QID_BEACON);
 
        return 0;
@@ -2479,7 +2470,7 @@ static const struct data_queue_desc rt61pci_queue_tx = {
 
 static const struct data_queue_desc rt61pci_queue_bcn = {
        .entry_num              = 4 * BEACON_ENTRIES,
-       .data_size              = MGMT_FRAME_SIZE,
+       .data_size              = 0, /* No DMA required for beacons */
        .desc_size              = TXINFO_SIZE,
        .priv_size              = sizeof(struct queue_entry_priv_pci_tx),
 };