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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>
This commit is contained in:
Gertjan van Wingerde 2011-05-18 20:25:42 +02:00 committed by John W. Linville
parent 872834dfb3
commit 798eefde30
1 changed files with 2 additions and 3 deletions
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5
drivers/net/wireless/rt2x00/rt2x00queue.c
View File

@ -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);
}