1 files changed, 13 insertions, 8 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
index a5e965068c83..b7f4fe8fba6e 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -155,7 +155,6 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
 {
         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb);
-        struct rt2x00_intf *intf = vif_to_intf(tx_info->control.vif);
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)entry->skb->data;
         struct ieee80211_rate *rate =
             ieee80211_get_tx_rate(rt2x00dev->hw, tx_info);
@@ -278,16 +277,22 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
          * sequence counter given by mac80211.
          */
         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
-                spin_lock_irqsave(&intf->seqlock, irqflags);
+                if (likely(tx_info->control.vif)) {
+                        struct rt2x00_intf *intf;
 
-                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);
+                        intf = vif_to_intf(tx_info->control.vif);
 
-                spin_unlock_irqrestore(&intf->seqlock, irqflags);
+                        spin_lock_irqsave(&intf->seqlock, irqflags);
 
-                __set_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags);
+                        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_irqrestore(&intf->seqlock, irqflags);
+
+                        __set_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags);
+                }
         }
 
         /*