1 files changed, 39 insertions, 68 deletions

diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
index a40434b5572..a961b698c69 100644
--- a/drivers/net/wireless/mwl8k.c
+++ b/drivers/net/wireless/mwl8k.c
@@ -1613,38 +1613,39 @@ struct mwl8k_cmd_mac_multicast_adr {
 
 #define MWL8K_ENABLE_RX_MULTICAST 0x000F
 
-static int mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw,
-					int mc_count,
-					struct dev_addr_list *mclist)
+static struct mwl8k_cmd_pkt *
+__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw,
+			      int mc_count, struct dev_addr_list *mclist)
 {
+	struct mwl8k_priv *priv = hw->priv;
 	struct mwl8k_cmd_mac_multicast_adr *cmd;
-	int index = 0;
-	int rc;
-	int size = sizeof(*cmd) + mc_count * ETH_ALEN;
+	int size;
+	int i;
+
+	if (mc_count > priv->num_mcaddrs)
+		mc_count = priv->num_mcaddrs;
+
+	size = sizeof(*cmd) + mc_count * ETH_ALEN;
 
-	cmd = kzalloc(size, GFP_KERNEL);
+	cmd = kzalloc(size, GFP_ATOMIC);
 	if (cmd == NULL)
-		return -ENOMEM;
+		return NULL;
 
 	cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
 	cmd->header.length = cpu_to_le16(size);
 	cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
 	cmd->numaddr = cpu_to_le16(mc_count);
 
-	while (index < mc_count && mclist) {
+	for (i = 0; i < mc_count && mclist; i++) {
 		if (mclist->da_addrlen != ETH_ALEN) {
-			rc = -EINVAL;
-			goto mwl8k_cmd_mac_multicast_adr_exit;
+			kfree(cmd);
+			return NULL;
 		}
-		memcpy(cmd->addr[index++], mclist->da_addr, ETH_ALEN);
+		memcpy(cmd->addr[i], mclist->da_addr, ETH_ALEN);
 		mclist = mclist->next;
 	}
 
-	rc = mwl8k_post_cmd(hw, &cmd->header);
-
-mwl8k_cmd_mac_multicast_adr_exit:
-	kfree(cmd);
-	return rc;
+	return &cmd->header;
 }
 
 /*
@@ -3091,12 +3092,21 @@ static void mwl8k_bss_info_changed(struct ieee80211_hw *hw,
 		printk(KERN_ERR "%s() timed out\n", __func__);
 }
 
+static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
+				   int mc_count, struct dev_addr_list *mclist)
+{
+	struct mwl8k_cmd_pkt *cmd;
+
+	cmd = __mwl8k_cmd_mac_multicast_adr(hw, mc_count, mclist);
+
+	return (unsigned long)cmd;
+}
+
 struct mwl8k_configure_filter_worker {
 	struct mwl8k_work_struct header;
 	unsigned int changed_flags;
-	unsigned int *total_flags;
-	int mc_count;
-	struct dev_addr_list *mclist;
+	unsigned int total_flags;
+	struct mwl8k_cmd_pkt *multicast_adr_cmd;
 };
 
 #define MWL8K_SUPPORTED_IF_FLAGS	FIF_BCN_PRBRESP_PROMISC
@@ -3105,18 +3115,12 @@ static int mwl8k_configure_filter_wt(struct work_struct *wt)
 {
 	struct mwl8k_configure_filter_worker *worker =
 		(struct mwl8k_configure_filter_worker *)wt;
-
 	struct ieee80211_hw *hw = worker->header.hw;
-	unsigned int changed_flags = worker->changed_flags;
-	unsigned int *total_flags = worker->total_flags;
-	int mc_count = worker->mc_count;
-	struct dev_addr_list *mclist = worker->mclist;
-
 	struct mwl8k_priv *priv = hw->priv;
 	int rc = 0;
 
-	if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
-		if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
+	if (worker->changed_flags & FIF_BCN_PRBRESP_PROMISC) {
+		if (worker->total_flags & FIF_BCN_PRBRESP_PROMISC)
 			rc = mwl8k_cmd_set_pre_scan(hw);
 		else {
 			u8 *bssid;
@@ -3129,54 +3133,20 @@ static int mwl8k_configure_filter_wt(struct work_struct *wt)
 		}
 	}
 
-	if (rc)
-		goto mwl8k_configure_filter_exit;
-	if (mc_count) {
-		if (mc_count > priv->num_mcaddrs)
-			mc_count = priv->num_mcaddrs;
-
-		rc = mwl8k_cmd_mac_multicast_adr(hw, mc_count, mclist);
-		if (rc)
-			printk(KERN_ERR
-			"%s()Error setting multicast addresses\n",
-			__func__);
-	}
+	if (!rc && worker->multicast_adr_cmd != NULL)
+		rc = mwl8k_post_cmd(hw, worker->multicast_adr_cmd);
+	kfree(worker->multicast_adr_cmd);
 
-mwl8k_configure_filter_exit:
 	return rc;
 }
 
-static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
-				   int mc_count, struct dev_addr_list *mclist)
-{
-	struct mwl8k_configure_filter_worker *worker;
-
-	worker = kzalloc(sizeof(*worker), GFP_ATOMIC);
-
-	if (!worker)
-		return 0;
-
-	/*
-	 * XXX: This is _HORRIBLY_ broken!!
-	 *
-	 *	No locking, the mclist pointer might be invalid as soon as this
-	 *	function returns, something in the list might be invalidated
-	 *	once we get to the worker, etc...
-	 */
-	worker->mc_count = mc_count;
-	worker->mclist = mclist;
-
-	return (u64)worker;
-}
-
 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
 				   unsigned int changed_flags,
 				   unsigned int *total_flags,
 				   u64 multicast)
 {
-
-	struct mwl8k_configure_filter_worker *worker = (void *)multicast;
 	struct mwl8k_priv *priv = hw->priv;
+	struct mwl8k_configure_filter_worker *worker;
 
 	/* Clear unsupported feature flags */
 	*total_flags &= MWL8K_SUPPORTED_IF_FLAGS;
@@ -3184,12 +3154,13 @@ static void mwl8k_configure_filter(struct ieee80211_hw *hw,
 	if (!(changed_flags & MWL8K_SUPPORTED_IF_FLAGS))
 		return;
 
+	worker = kzalloc(sizeof(*worker), GFP_ATOMIC);
 	if (worker == NULL)
 		return;
 
-	worker->header.options = MWL8K_WQ_QUEUE_ONLY | MWL8K_WQ_TX_WAIT_EMPTY;
 	worker->changed_flags = changed_flags;
-	worker->total_flags = total_flags;
+	worker->total_flags = *total_flags;
+	worker->multicast_adr_cmd = (void *)(unsigned long)multicast;
 
 	mwl8k_queue_work(hw, &worker->header, priv->config_wq,
 			 mwl8k_configure_filter_wt);