NFC: nci: Add reference to the RF logical connection

The NCI_STATIC_RF_CONN_ID logical connection is the most used
connection. Keeping it directly accessible in the nci_dev
structure will simplify and optimize the access.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

include/net/nfc/nci_core.h

@@ -189,6 +189,7 @@ struct nci_dev {
 	__u8			cur_conn_id;
 
 	struct list_head	conn_info_list;
+	struct nci_conn_info	*rf_conn_info;
 
 	struct timer_list	cmd_timer;
 	struct timer_list	data_timer;

net/nfc/nci/core.c

@@ -803,7 +803,7 @@ static int nci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
 	int rc;
 	struct nci_conn_info    *conn_info;
 
-	conn_info = nci_get_conn_info_by_conn_id(ndev, NCI_STATIC_RF_CONN_ID);
+	conn_info = ndev->rf_conn_info;
 	if (!conn_info)
 		return -EPROTO;
 

net/nfc/nci/ntf.c

@@ -625,8 +625,7 @@ static void nci_rf_intf_activated_ntf_packet(struct nci_dev *ndev,
 
 exit:
 	if (err == NCI_STATUS_OK) {
-		conn_info = nci_get_conn_info_by_conn_id(ndev,
-							 NCI_STATIC_RF_CONN_ID);
+		conn_info = ndev->rf_conn_info;
 		if (!conn_info)
 			return;
 
@@ -684,8 +683,7 @@ static void nci_rf_deactivate_ntf_packet(struct nci_dev *ndev,
 
 	pr_debug("entry, type 0x%x, reason 0x%x\n", ntf->type, ntf->reason);
 
-	conn_info =
-		nci_get_conn_info_by_conn_id(ndev, NCI_STATIC_RF_CONN_ID);
+	conn_info = ndev->rf_conn_info;
 	if (!conn_info)
 		return;
 

net/nfc/nci/rsp.c

@@ -148,8 +148,7 @@ static void nci_rf_disc_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
 	if (status == NCI_STATUS_OK) {
 		atomic_set(&ndev->state, NCI_DISCOVERY);
 
-		conn_info = nci_get_conn_info_by_conn_id(ndev,
-							 NCI_STATIC_RF_CONN_ID);
+		conn_info = ndev->rf_conn_info;
 		if (!conn_info) {
 			conn_info = devm_kzalloc(&ndev->nfc_dev->dev,
 						 sizeof(struct nci_conn_info),
@@ -161,6 +160,7 @@ static void nci_rf_disc_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
 			conn_info->conn_id = NCI_STATIC_RF_CONN_ID;
 			INIT_LIST_HEAD(&conn_info->list);
 			list_add(&conn_info->list, &ndev->conn_info_list);
+			ndev->rf_conn_info = conn_info;
 		}
 	}