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Bluetooth: Check scan state before disabling during suspend

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Check current scan state by checking HCI_LE_SCAN flag and send scan
disable command only if scan is already enabled.

Signed-off-by: Manish Mandlik <mmandlik@google.com>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Manish Mandlik 2020-06-01 18:42:51 -07:00 committed by Marcel Holtmann
parent 00eb0cb36f
commit 6fb00d4e94
1 changed files with 6 additions and 4 deletions
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10
net/bluetooth/hci_request.c
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@ -998,8 +998,9 @@ static void hci_req_set_event_filter(struct hci_request *req)
static void hci_req_config_le_suspend_scan(struct hci_request *req)
{
/* Can't change params without disabling first */
hci_req_add_le_scan_disable(req);
/* Before changing params disable scan if enabled */
if (hci_dev_test_flag(req->hdev, HCI_LE_SCAN))
hci_req_add_le_scan_disable(req);
/* Configure params and enable scanning */
hci_req_add_le_passive_scan(req);
@ -1065,8 +1066,9 @@ void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next)
page_scan = SCAN_DISABLED;
hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &page_scan);
/* Disable LE passive scan */
hci_req_add_le_scan_disable(&req);
/* Disable LE passive scan if enabled */
if (hci_dev_test_flag(hdev, HCI_LE_SCAN))
hci_req_add_le_scan_disable(&req);
/* Mark task needing completion */
set_bit(SUSPEND_SCAN_DISABLE, hdev->suspend_tasks);