rt2x00: use atomic variable for seqno

[pandora-kernel.git] / drivers / net / wireless / rt2x00 / rt2x00queue.c

diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
index 9b1b2b7..50f92d5 100644 (file)
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -207,6 +207,7 @@ static void rt2x00queue_create_tx_descriptor_seq(struct rt2x00_dev *rt2x00dev,
        struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
        struct rt2x00_intf *intf = vif_to_intf(tx_info->control.vif);
+       u16 seqno;
 
        if (!(tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ))
                return;
@@ -227,15 +228,13 @@ static void rt2x00queue_create_tx_descriptor_seq(struct rt2x00_dev *rt2x00dev,
         * sequence counting per-frame, since those will override the
         * sequence counter given by mac80211.
         */
-       spin_lock(&intf->seqlock);
-
        if (test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags))
-               intf->seqno += 0x10;
-       hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
-       hdr->seq_ctrl |= cpu_to_le16(intf->seqno);
-
-       spin_unlock(&intf->seqlock);
+               seqno = atomic_add_return(0x10, &intf->seqno);
+       else
+               seqno = atomic_read(&intf->seqno);
 
+       hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
+       hdr->seq_ctrl |= cpu_to_le16(seqno);
 }
 
 static void rt2x00queue_create_tx_descriptor_plcp(struct rt2x00_dev *rt2x00dev,