[1/2,v2] NFC: Set target nfcid1 for all HCI reader A targets

Commit Message

Samuel Ortiz July 12, 2012, 6:27 p.m. UTC

From: Eric Lapuyade <[e-mail]>

Without the discovered target nfcid1 and its length set properly, type 2
tags detection fails with the pn544 as it checks for them from
pn544_hci_complete_target_discovered().

Signed-off-by: Eric Lapuyade <[e-mail]>
Reported-by: Mathias Jeppsson <[e-mail]>
Signed-off-by: Samuel Ortiz <[e-mail]>
---
v2: Add proper changelog and fix a checkpatch warning

---
 net/nfc/hci/core.c |   15 +++++++++++++++
 1 file changed, 15 insertions(+)

Patch

diff --git a/net/nfc/hci/core.c b/net/nfc/hci/core.c
index e1a640d..c48f534 100644
--- a/net/nfc/hci/core.c
+++ b/net/nfc/hci/core.c
@@ -170,6 +170,7 @@  static int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate)
 	struct nfc_target *targets;
 	struct sk_buff *atqa_skb = NULL;
 	struct sk_buff *sak_skb = NULL;
+	struct sk_buff *uid_skb = NULL;
 	int r;
 
 	pr_debug("from gate %d\n", gate);
@@ -205,6 +206,19 @@  static int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate)
 		targets->sens_res = be16_to_cpu(*(u16 *)atqa_skb->data);
 		targets->sel_res = sak_skb->data[0];
 
+		r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE,
+				      NFC_HCI_RF_READER_A_UID, &uid_skb);
+		if (r < 0)
+			goto exit;
+
+		if (uid_skb->len == 0 || uid_skb->len > NFC_NFCID1_MAXSIZE) {
+			r = -EPROTO;
+			goto exit;
+		}
+
+		memcpy(targets->nfcid1, uid_skb->data, uid_skb->len);
+		targets->nfcid1_len = uid_skb->len;
+
 		if (hdev->ops->complete_target_discovered) {
 			r = hdev->ops->complete_target_discovered(hdev, gate,
 								  targets);
@@ -240,6 +254,7 @@  exit:
 	kfree(targets);
 	kfree_skb(atqa_skb);
 	kfree_skb(sak_skb);
+	kfree_skb(uid_skb);
 
 	return r;
 }