From 8a49943f5bc5ff4f835d50451ecf2380eab44d2e Mon Sep 17 00:00:00 2001
From: Christophe Ricard <christophe.ricard@gmail.com>
Date: Sun, 25 Oct 2015 22:54:24 +0100
Subject: [PATCH] NFC: nci: Call nci_hci_clear_all_pipes at HCI initial
 activation.

When session_id is filled to 0xff, the pipe configuration is
probably incorrect and needs to be cleared.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
---
 net/nfc/nci/hci.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/net/nfc/nci/hci.c b/net/nfc/nci/hci.c
index 6f477d21adfd..af401fff72d9 100644
--- a/net/nfc/nci/hci.c
+++ b/net/nfc/nci/hci.c
@@ -706,6 +706,10 @@ int nci_hci_dev_session_init(struct nci_dev *ndev)
 		/* Restore gate<->pipe table from some proprietary location. */
 		r = ndev->ops->hci_load_session(ndev);
 	} else {
+		r = nci_hci_clear_all_pipes(ndev);
+		if (r < 0)
+			goto exit;
+
 		r = nci_hci_dev_connect_gates(ndev,
 					      ndev->hci_dev->init_data.gate_count,
 					      ndev->hci_dev->init_data.gates);