rt2x00: Interface sequence lock doesn't have to disable interrupts.

This lock is only used in the TX path and thus in process context. Therefore
we can use a much lighter spinlock variant.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
index ab8c16f8bcaf..c7fc9def6bcf 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -206,7 +206,6 @@ static void rt2x00queue_create_tx_descriptor_seq(struct queue_entry *entry,
         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb);
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)entry->skb->data;
         struct rt2x00_intf *intf = vif_to_intf(tx_info->control.vif);
-        unsigned long irqflags;
 
         if (!(tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ))
                 return;
@@ -227,14 +226,14 @@ static void rt2x00queue_create_tx_descriptor_seq(struct queue_entry *entry,
          * sequence counting per-frame, since those will override the
          * sequence counter given by mac80211.
          */
-        spin_lock_irqsave(&intf->seqlock, irqflags);
+        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_irqrestore(&intf->seqlock, irqflags);
+        spin_unlock(&intf->seqlock);
 
 }