From: Andre Guedes <andre.guedes@openbossa.org>
Date: Wed, 26 Feb 2014 23:21:56 +0000 (-0300)
Subject: Bluetooth: Update background scan parameters
X-Git-Tag: next-20140306~61^2~26
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=dd2ef8e274b265a0af1cc0d3ddafd361fc3a00a6;p=karo-tx-linux.git

Bluetooth: Update background scan parameters

If new scanning parameters are set while background scan is running,
we should restart background scanning so these parameters are updated.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
---

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 2e6564e47ded..4c4912e9a7c4 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -3924,6 +3924,21 @@ static int set_scan_params(struct sock *sk, struct hci_dev *hdev,
 
 	err = cmd_complete(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 0, NULL, 0);
 
+	/* If background scan is running, restart it so new parameters are
+	 * loaded.
+	 */
+	if (test_bit(HCI_LE_SCAN, &hdev->dev_flags) &&
+	    hdev->discovery.state == DISCOVERY_STOPPED) {
+		struct hci_request req;
+
+		hci_req_init(&req, hdev);
+
+		hci_req_add_le_scan_disable(&req);
+		hci_req_add_le_passive_scan(&req);
+
+		hci_req_run(&req, NULL);
+	}
+
 	hci_dev_unlock(hdev);
 
 	return err;