NFC: protect nci_data_exchange transactions

Protect 'cb' and 'cb_context' arguments in nci_data_exchange.
In fact, this implements a queue with max length of 1 data
exchange transactions in parallel.

Signed-off-by: Ilan Elias <ilane@ti.com>
Acked-by: Lauro Ramos Venancio <lauro.venancio@openbossa.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/net/nfc/nci_core.h b/include/net/nfc/nci_core.h
index 2563f3a95e67..b8b4bbd7e0fc 100644
--- a/include/net/nfc/nci_core.h
+++ b/include/net/nfc/nci_core.h
@@ -40,6 +40,7 @@ enum {
         NCI_UP,
         NCI_DISCOVERY,
         NCI_POLL_ACTIVE,
+        NCI_DATA_EXCHANGE,
 };
 
 /* NCI timeouts */