queue_delayed_work(hdev->workqueue, &hdev->le_scan_restart, 300);
---
include/net/bluetooth/hci_core.h | 3 +++
net/bluetooth/hci_core.c | 40 ++++++++++++++++++++++++++++++++++++++++
net/bluetooth/hci_event.c | 3 ++-
3 files changed, 45 insertions(+), 1 deletion(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index b8685a7..0865bc1 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -307,6 +307,8 @@ struct hci_dev {
struct discovery_state discovery;
struct hci_conn_hash conn_hash;
+ bool scan_restart;
+
struct list_head mgmt_pending;
struct list_head blacklist;
struct list_head whitelist;
@@ -334,6 +336,7 @@ struct hci_dev {
unsigned long dev_flags;
struct delayed_work le_scan_disable;
+ struct delayed_work le_scan_restart;
__s8 adv_tx_power;
__u8 adv_data[HCI_MAX_AD_LENGTH];
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index cb05d7f..19f0b03 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -2580,6 +2580,7 @@ static int hci_dev_do_close(struct hci_dev *hdev)
cancel_delayed_work(&hdev->service_cache);
cancel_delayed_work_sync(&hdev->le_scan_disable);
+ cancel_delayed_work_sync(&hdev->le_scan_restart);
if (test_bit(HCI_MGMT, &hdev->dev_flags))
cancel_delayed_work_sync(&hdev->rpa_expired);
@@ -3846,6 +3847,8 @@ static void le_scan_disable_work(struct work_struct *work)
BT_DBG("%s", hdev->name);
+ cancel_delayed_work_sync(&hdev->le_scan_restart);
+
hci_req_init(&req, hdev);
hci_req_add_le_scan_disable(&req);
@@ -3855,6 +3858,40 @@ static void le_scan_disable_work(struct work_struct *work)
BT_ERR("Disable LE scanning request failed: err %d", err);
}
+static void le_scan_restart_work_complete(struct hci_dev *hdev, u8 status)
+{
+ hdev->scan_restart = false;
+
+ if (status) {
+ BT_ERR("Failed to restart LE scanning: status %d", status);
+ }
+}
+
+static void le_scan_restart_work(struct work_struct *work)
+{
+ struct hci_dev *hdev = container_of(work, struct hci_dev,
+ le_scan_restart.work);
+ struct hci_request req;
+ struct hci_cp_le_set_scan_enable cp;
+ int err;
+
+ BT_DBG("%s", hdev->name);
+
+ hci_req_init(&req, hdev);
+
+ hci_req_add_le_scan_disable(&req);
+
+ memset(&cp, 0, sizeof(cp));
+ cp.enable = LE_SCAN_ENABLE;
+ hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
+
+ hdev->scan_restart = true;
+
+ err = hci_req_run(&req, le_scan_restart_work_complete);
+ if (err)
+ BT_ERR("Disable LE scanning request failed: err %d", err);
+}
+
static void set_random_addr(struct hci_request *req, bdaddr_t *rpa)
{
struct hci_dev *hdev = req->hdev;
@@ -4007,6 +4044,8 @@ struct hci_dev *hci_alloc_dev(void)
hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE;
hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE;
+ hdev->scan_restart = false;
+
mutex_init(&hdev->lock);
mutex_init(&hdev->req_lock);
@@ -4032,6 +4071,7 @@ struct hci_dev *hci_alloc_dev(void)
INIT_DELAYED_WORK(&hdev->power_off, hci_power_off);
INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off);
INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work);
+ INIT_DELAYED_WORK(&hdev->le_scan_restart, le_scan_restart_work);
skb_queue_head_init(&hdev->rx_q);
skb_queue_head_init(&hdev->cmd_q);
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 9629153..0191f76 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1155,7 +1155,8 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
/* Cancel this timer so that we don't try to disable scanning
* when it's already disabled.
*/
- cancel_delayed_work(&hdev->le_scan_disable);
+ if (!hdev->scan_restart)
+ cancel_delayed_work(&hdev->le_scan_disable);
clear_bit(HCI_LE_SCAN, &hdev->dev_flags);
--
2.1.0.rc2.206.gedb03e5