diff options
Diffstat (limited to 'drivers/nfc/pn544/pn544.c')
| -rw-r--r-- | drivers/nfc/pn544/pn544.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/nfc/pn544/pn544.c b/drivers/nfc/pn544/pn544.c index 4af70f9c01aa..9349c548e8dc 100644 --- a/drivers/nfc/pn544/pn544.c +++ b/drivers/nfc/pn544/pn544.c @@ -714,18 +714,23 @@ static int pn544_hci_check_presence(struct nfc_hci_dev *hdev, return 0; } +/* + * Returns: + * <= 0: driver handled the event, skb consumed + * 1: driver does not handle the event, please do standard processing + */ static int pn544_hci_event_received(struct nfc_hci_dev *hdev, u8 gate, u8 event, struct sk_buff *skb) { struct sk_buff *rgb_skb = NULL; - int r = 0; + int r; pr_debug("hci event %d", event); switch (event) { case PN544_HCI_EVT_ACTIVATED: - if (gate == PN544_RF_READER_NFCIP1_INITIATOR_GATE) + if (gate == PN544_RF_READER_NFCIP1_INITIATOR_GATE) { r = nfc_hci_target_discovered(hdev, gate); - else if (gate == PN544_RF_READER_NFCIP1_TARGET_GATE) { + } else if (gate == PN544_RF_READER_NFCIP1_TARGET_GATE) { r = nfc_hci_get_param(hdev, gate, PN544_DEP_ATR_REQ, &rgb_skb); if (r < 0) @@ -736,6 +741,8 @@ static int pn544_hci_event_received(struct nfc_hci_dev *hdev, u8 gate, u8 event, rgb_skb->len); kfree_skb(rgb_skb); + } else { + r = -EINVAL; } break; case PN544_HCI_EVT_DEACTIVATED: @@ -757,8 +764,7 @@ static int pn544_hci_event_received(struct nfc_hci_dev *hdev, u8 gate, u8 event, skb_pull(skb, 2); return nfc_tm_data_received(hdev->ndev, skb); default: - pr_err("Discarded unknown event %x to gate %x\n", event, gate); - break; + return 1; } exit: |