From 6095b0f07d9b1abd98484bc33b329e06a684115b Mon Sep 17 00:00:00 2001 From: Christophe Ricard Date: Sun, 1 Feb 2015 22:26:18 +0100 Subject: [PATCH] NFC: nci: Change NCI state machine to LISTEN_ACTIVE When receiving an interface activation notification, if the RF interface is NCI_RF_INTERFACE_NFCEE_DIRECT, we need to ignore the following parameters and change the NCI state machine to NCI_LISTEN_ACTIVE. According to the NCI specification, the parameters should be 0 and shall be ignored. Signed-off-by: Christophe Ricard Signed-off-by: Samuel Ortiz --- net/nfc/nci/ntf.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/net/nfc/nci/ntf.c b/net/nfc/nci/ntf.c index 5924b812fb6a..33f5f00ecf4c 100644 --- a/net/nfc/nci/ntf.c +++ b/net/nfc/nci/ntf.c @@ -541,6 +541,13 @@ static void nci_rf_intf_activated_ntf_packet(struct nci_dev *ndev, pr_debug("rf_tech_specific_params_len %d\n", ntf.rf_tech_specific_params_len); + /* If this contains a value of 0x00 (NFCEE Direct RF + * Interface) then all following parameters SHALL contain a + * value of 0 and SHALL be ignored. + */ + if (ntf.rf_interface == NCI_RF_INTERFACE_NFCEE_DIRECT) + goto listen; + if (ntf.rf_tech_specific_params_len > 0) { switch (ntf.activation_rf_tech_and_mode) { case NCI_NFC_A_PASSIVE_POLL_MODE: @@ -653,6 +660,7 @@ exit: nci_req_complete(ndev, err); } } else { +listen: /* Listen mode */ atomic_set(&ndev->state, NCI_LISTEN_ACTIVE); if (err == NCI_STATUS_OK && -- 2.39.5