rt2x00: Move generic TX frame writing code into rt2x00queue

The write_tx_data functions in rt2x00pci and rt2x00usb have
a lot in common. This moves that duplicate code into
rt2x00queue_write_tx_frame().

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

1 files changed, 16 insertions, 27 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00pci.c b/drivers/net/wireless/rt2x00/rt2x00pci.c
index 70a3d135f64..a6bac75de9f 100644
--- a/drivers/net/wireless/rt2x00/rt2x00pci.c
+++ b/drivers/net/wireless/rt2x00/rt2x00pci.c
@@ -34,52 +34,40 @@
 /*
  * TX data handlers.
  */
-int rt2x00pci_write_tx_data(struct rt2x00_dev *rt2x00dev,
-			    struct data_queue *queue, struct sk_buff *skb)
+int rt2x00pci_write_tx_data(struct queue_entry *entry)
 {
-	struct queue_entry *entry = rt2x00queue_get_entry(queue, Q_INDEX);
 	struct queue_entry_priv_pci *entry_priv = entry->priv_data;
 	struct skb_frame_desc *skbdesc;
-	struct txentry_desc txdesc;
 	u32 word;
 
-	if (rt2x00queue_full(queue))
-		return -EINVAL;
-
 	rt2x00_desc_read(entry_priv->desc, 0, &word);
 
-	if (rt2x00_get_field32(word, TXD_ENTRY_OWNER_NIC) ||
-	    rt2x00_get_field32(word, TXD_ENTRY_VALID)) {
-		ERROR(rt2x00dev,
-		      "Arrived at non-free entry in the non-full queue %d.\n"
+	/*
+	 * This should not happen, we already checked the entry
+	 * was ours. When the hardware disagrees there has been
+	 * a queue corruption!
+	 */
+	if (unlikely(rt2x00_get_field32(word, TXD_ENTRY_OWNER_NIC) ||
+		     rt2x00_get_field32(word, TXD_ENTRY_VALID))) {
+		ERROR(entry->queue->rt2x00dev,
+		      "Corrupt queue %d, accessing entry which is not ours.\n"
 		      "Please file bug report to %s.\n",
 		      entry->queue->qid, DRV_PROJECT);
 		return -EINVAL;
 	}
 
 	/*
-	 * Copy all TX descriptor information into txdesc,
-	 * after that we are free to use the skb->cb array
-	 * for our information.
-	 */
-	entry->skb = skb;
-	rt2x00queue_create_tx_descriptor(entry, &txdesc);
-
-	/*
 	 * Fill in skb descriptor
 	 */
-	skbdesc = get_skb_frame_desc(skb);
+	skbdesc = get_skb_frame_desc(entry->skb);
 	memset(skbdesc, 0, sizeof(*skbdesc));
-	skbdesc->data = skb->data;
-	skbdesc->data_len = skb->len;
+	skbdesc->data = entry->skb->data;
+	skbdesc->data_len = entry->skb->len;
 	skbdesc->desc = entry_priv->desc;
-	skbdesc->desc_len = queue->desc_size;
+	skbdesc->desc_len = entry->queue->desc_size;
 	skbdesc->entry = entry;
 
-	memcpy(entry_priv->data, skb->data, skb->len);
-
-	rt2x00queue_write_tx_descriptor(entry, &txdesc);
-	rt2x00queue_index_inc(queue, Q_INDEX);
+	memcpy(entry_priv->data, entry->skb->data, entry->skb->len);
 
 	return 0;
 }
@@ -178,6 +166,7 @@ void rt2x00pci_txdone(struct rt2x00_dev *rt2x00dev, struct queue_entry *entry,
 	rt2x00_set_field32(&word, TXD_ENTRY_VALID, 0);
 	rt2x00_desc_write(entry_priv->desc, 0, word);
 
+	__clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
 	rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE);
 
 	/*