Merge commit 'v2.6.34-rc1' into for-2.6.35-incoming

1 files changed, 41 insertions, 36 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c
index 8f407156285..1ed5206721e 100644
--- a/drivers/net/wireless/iwlwifi/iwl-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-tx.c
@@ -1,6 +1,6 @@
 /******************************************************************************
  *
- * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
+ * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
  *
  * Portions of this file are derived from the ipw3945 project, as well
  * as portions of the ieee80211 subsystem header files.
@@ -60,7 +60,8 @@ static const u16 default_tid_to_tx_fifo[] = {
 static inline int iwl_alloc_dma_ptr(struct iwl_priv *priv,
 				    struct iwl_dma_ptr *ptr, size_t size)
 {
-	ptr->addr = pci_alloc_consistent(priv->pci_dev, size, &ptr->dma);
+	ptr->addr = dma_alloc_coherent(&priv->pci_dev->dev, size, &ptr->dma,
+				       GFP_KERNEL);
 	if (!ptr->addr)
 		return -ENOMEM;
 	ptr->size = size;
@@ -73,21 +74,20 @@ static inline void iwl_free_dma_ptr(struct iwl_priv *priv,
 	if (unlikely(!ptr->addr))
 		return;
 
-	pci_free_consistent(priv->pci_dev, ptr->size, ptr->addr, ptr->dma);
+	dma_free_coherent(&priv->pci_dev->dev, ptr->size, ptr->addr, ptr->dma);
 	memset(ptr, 0, sizeof(*ptr));
 }
 
 /**
  * iwl_txq_update_write_ptr - Send new write index to hardware
  */
-int iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+void iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 {
 	u32 reg = 0;
-	int ret = 0;
 	int txq_id = txq->q.id;
 
 	if (txq->need_update == 0)
-		return ret;
+		return;
 
 	/* if we're trying to save power */
 	if (test_bit(STATUS_POWER_PMI, &priv->status)) {
@@ -101,7 +101,7 @@ int iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 				      txq_id, reg);
 			iwl_set_bit(priv, CSR_GP_CNTRL,
 				    CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
-			return ret;
+			return;
 		}
 
 		iwl_write_direct32(priv, HBUS_TARG_WRPTR,
@@ -114,8 +114,6 @@ int iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 			    txq->q.write_ptr | (txq_id << 8));
 
 	txq->need_update = 0;
-
-	return ret;
 }
 EXPORT_SYMBOL(iwl_txq_update_write_ptr);
 
@@ -146,7 +144,7 @@ void iwl_tx_queue_free(struct iwl_priv *priv, int txq_id)
 {
 	struct iwl_tx_queue *txq = &priv->txq[txq_id];
 	struct iwl_queue *q = &txq->q;
-	struct pci_dev *dev = priv->pci_dev;
+	struct device *dev = &priv->pci_dev->dev;
 	int i;
 
 	if (q->n_bd == 0)
@@ -163,8 +161,8 @@ void iwl_tx_queue_free(struct iwl_priv *priv, int txq_id)
 
 	/* De-alloc circular buffer of TFDs */
 	if (txq->q.n_bd)
-		pci_free_consistent(dev, priv->hw_params.tfd_size *
-				    txq->q.n_bd, txq->tfds, txq->q.dma_addr);
+		dma_free_coherent(dev, priv->hw_params.tfd_size *
+				  txq->q.n_bd, txq->tfds, txq->q.dma_addr);
 
 	/* De-alloc array of per-TFD driver data */
 	kfree(txq->txb);
@@ -193,7 +191,7 @@ void iwl_cmd_queue_free(struct iwl_priv *priv)
 {
 	struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 	struct iwl_queue *q = &txq->q;
-	struct pci_dev *dev = priv->pci_dev;
+	struct device *dev = &priv->pci_dev->dev;
 	int i;
 
 	if (q->n_bd == 0)
@@ -205,8 +203,8 @@ void iwl_cmd_queue_free(struct iwl_priv *priv)
 
 	/* De-alloc circular buffer of TFDs */
 	if (txq->q.n_bd)
-		pci_free_consistent(dev, priv->hw_params.tfd_size *
-				    txq->q.n_bd, txq->tfds, txq->q.dma_addr);
+		dma_free_coherent(dev, priv->hw_params.tfd_size * txq->q.n_bd,
+				  txq->tfds, txq->q.dma_addr);
 
 	/* deallocate arrays */
 	kfree(txq->cmd);
@@ -297,7 +295,7 @@ static int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
 static int iwl_tx_queue_alloc(struct iwl_priv *priv,
 			      struct iwl_tx_queue *txq, u32 id)
 {
-	struct pci_dev *dev = priv->pci_dev;
+	struct device *dev = &priv->pci_dev->dev;
 	size_t tfd_sz = priv->hw_params.tfd_size * TFD_QUEUE_SIZE_MAX;
 
 	/* Driver private data, only for Tx (not command) queues,
@@ -316,8 +314,8 @@ static int iwl_tx_queue_alloc(struct iwl_priv *priv,
 
 	/* Circular buffer of transmit frame descriptors (TFDs),
 	 * shared with device */
-	txq->tfds = pci_alloc_consistent(dev, tfd_sz, &txq->q.dma_addr);
-
+	txq->tfds = dma_alloc_coherent(dev, tfd_sz, &txq->q.dma_addr,
+				       GFP_KERNEL);
 	if (!txq->tfds) {
 		IWL_ERR(priv, "pci_alloc_consistent(%zd) failed\n", tfd_sz);
 		goto error;
@@ -366,7 +364,7 @@ int iwl_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq,
 	for (i = 0; i < actual_slots; i++) {
 		/* only happens for cmd queue */
 		if (i == slots_num)
-			len += IWL_MAX_SCAN_SIZE;
+			len = IWL_MAX_CMD_SIZE;
 
 		txq->cmd[i] = kmalloc(len, GFP_KERNEL);
 		if (!txq->cmd[i])
@@ -745,7 +743,6 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 	u8 tid = 0;
 	u8 *qc = NULL;
 	unsigned long flags;
-	int ret;
 
 	spin_lock_irqsave(&priv->lock, flags);
 	if (iwl_is_rfkill(priv)) {
@@ -820,8 +817,10 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 		hdr->seq_ctrl |= cpu_to_le16(seq_number);
 		seq_number += 0x10;
 		/* aggregation is on for this <sta,tid> */
-		if (info->flags & IEEE80211_TX_CTL_AMPDU)
+		if (info->flags & IEEE80211_TX_CTL_AMPDU &&
+		    priv->stations[sta_id].tid[tid].agg.state == IWL_AGG_ON) {
 			txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
+		}
 	}
 
 	txq = &priv->txq[txq_id];
@@ -963,7 +962,7 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 
 	/* Tell device the write index *just past* this latest filled TFD */
 	q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
-	ret = iwl_txq_update_write_ptr(priv, txq);
+	iwl_txq_update_write_ptr(priv, txq);
 	spin_unlock_irqrestore(&priv->lock, flags);
 
 	/*
@@ -977,9 +976,6 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 	if (sta_priv && sta_priv->client)
 		atomic_inc(&sta_priv->pending_frames);
 
-	if (ret)
-		return ret;
-
 	if ((iwl_queue_space(q) < q->high_mark) && priv->mac80211_registered) {
 		if (wait_write_ptr) {
 			spin_lock_irqsave(&priv->lock, flags);
@@ -1018,7 +1014,7 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 	struct iwl_cmd_meta *out_meta;
 	dma_addr_t phys_addr;
 	unsigned long flags;
-	int len, ret;
+	int len;
 	u32 idx;
 	u16 fix_size;
 
@@ -1027,9 +1023,12 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 
 	/* If any of the command structures end up being larger than
 	 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
-	 * we will need to increase the size of the TFD entries */
+	 * we will need to increase the size of the TFD entries
+	 * Also, check to see if command buffer should not exceed the size
+	 * of device_cmd and max_cmd_size. */
 	BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
 	       !(cmd->flags & CMD_SIZE_HUGE));
+	BUG_ON(fix_size > IWL_MAX_CMD_SIZE);
 
 	if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
 		IWL_WARN(priv, "Not sending command - %s KILL\n",
@@ -1073,8 +1072,8 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 	if (cmd->flags & CMD_SIZE_HUGE)
 		out_cmd->hdr.sequence |= SEQ_HUGE_FRAME;
 	len = sizeof(struct iwl_device_cmd);
-	len += (idx == TFD_CMD_SLOTS) ?  IWL_MAX_SCAN_SIZE : 0;
-
+	if (idx == TFD_CMD_SLOTS)
+		len = IWL_MAX_CMD_SIZE;
 
 #ifdef CONFIG_IWLWIFI_DEBUG
 	switch (out_cmd->hdr.cmd) {
@@ -1115,10 +1114,10 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 
 	/* Increment and update queue's write index */
 	q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
-	ret = iwl_txq_update_write_ptr(priv, txq);
+	iwl_txq_update_write_ptr(priv, txq);
 
 	spin_unlock_irqrestore(&priv->hcmd_lock, flags);
-	return ret ? ret : idx;
+	return idx;
 }
 
 static void iwl_tx_status(struct iwl_priv *priv, struct sk_buff *skb)
@@ -1260,6 +1259,8 @@ void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
 
 	if (!(meta->flags & CMD_ASYNC)) {
 		clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
+		IWL_DEBUG_INFO(priv, "Clearing HCMD_ACTIVE for command %s \n",
+			       get_cmd_string(cmd->hdr.cmd));
 		wake_up_interruptible(&priv->wait_command_queue);
 	}
 }
@@ -1346,7 +1347,7 @@ int iwl_tx_agg_stop(struct iwl_priv *priv , const u8 *ra, u16 tid)
 {
 	int tx_fifo_id, txq_id, sta_id, ssn = -1;
 	struct iwl_tid_data *tid_data;
-	int ret, write_ptr, read_ptr;
+	int write_ptr, read_ptr;
 	unsigned long flags;
 
 	if (!ra) {
@@ -1398,13 +1399,17 @@ int iwl_tx_agg_stop(struct iwl_priv *priv , const u8 *ra, u16 tid)
 	priv->stations[sta_id].tid[tid].agg.state = IWL_AGG_OFF;
 
 	spin_lock_irqsave(&priv->lock, flags);
-	ret = priv->cfg->ops->lib->txq_agg_disable(priv, txq_id, ssn,
+	/*
+	 * the only reason this call can fail is queue number out of range,
+	 * which can happen if uCode is reloaded and all the station
+	 * information are lost. if it is outside the range, there is no need
+	 * to deactivate the uCode queue, just return "success" to allow
+	 *  mac80211 to clean up it own data.
+	 */
+	priv->cfg->ops->lib->txq_agg_disable(priv, txq_id, ssn,
 						   tx_fifo_id);
 	spin_unlock_irqrestore(&priv->lock, flags);
 
-	if (ret)
-		return ret;
-
 	ieee80211_stop_tx_ba_cb_irqsafe(priv->vif, ra, tid);
 
 	return 0;