1 files changed, 11 insertions, 20 deletions

diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index ae12dcdd3c24..14bc7b281659 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -2366,6 +2366,7 @@ 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;
@@ -2373,21 +2374,8 @@ 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
@@ -2395,9 +2383,9 @@ 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;
 
@@ -2425,7 +2413,10 @@ static int rt61pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
          */
         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, control->queue);
 
         return 0;
@@ -2490,7 +2481,7 @@ 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),
 };