NFC: HCI check presence must not fail when driver doesn't support it

When the driver does not support checking the tag is still present, it
must return -EOPNOTSUPP. The NFC Core will then stop asking and not
report a tag lost event to user space.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/nfc/pn544_hci.c b/drivers/nfc/pn544_hci.c
index b66d4681a577..70858b5f81e4 100644
--- a/drivers/nfc/pn544_hci.c
+++ b/drivers/nfc/pn544_hci.c
@@ -986,7 +986,7 @@ static int pn544_hci_check_presence(struct nfc_hci_dev *hdev,
         } else if (target->supported_protocols & NFC_PROTO_MIFARE_MASK) {
                 if (target->nfcid1_len != 4 && target->nfcid1_len != 7 &&
                     target->nfcid1_len != 10)
-                        return -EPROTO;
+                        return -EOPNOTSUPP;
 
                  return nfc_hci_send_cmd(hdev, NFC_HCI_RF_READER_A_GATE,
                                      PN544_RF_READER_CMD_ACTIVATE_NEXT,