From 9952d90ea2885d7cbf80cd233f694f09a9c0eaec Mon Sep 17 00:00:00 2001 From: Abhishek Pandit-Subedi Date: Wed, 11 Mar 2020 08:54:00 -0700 Subject: Bluetooth: Handle PM_SUSPEND_PREPARE and PM_POST_SUSPEND Register for PM_SUSPEND_PREPARE and PM_POST_SUSPEND to make sure the Bluetooth controller is prepared correctly for suspend/resume. Implement the registration, scheduling and task handling portions only in this patch. Signed-off-by: Abhishek Pandit-Subedi Signed-off-by: Marcel Holtmann --- net/bluetooth/hci_request.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'net/bluetooth/hci_request.c') diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c index 53179ae856ae..2343166614f0 100644 --- a/net/bluetooth/hci_request.c +++ b/net/bluetooth/hci_request.c @@ -918,6 +918,21 @@ static u8 get_adv_instance_scan_rsp_len(struct hci_dev *hdev, u8 instance) return adv_instance->scan_rsp_len; } +/* Call with hci_dev_lock */ +void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next) +{ + if (next == hdev->suspend_state) { + bt_dev_dbg(hdev, "Same state before and after: %d", next); + goto done; + } + + hdev->suspend_state = next; + +done: + clear_bit(SUSPEND_PREPARE_NOTIFIER, hdev->suspend_tasks); + wake_up(&hdev->suspend_wait_q); +} + static u8 get_cur_adv_instance_scan_rsp_len(struct hci_dev *hdev) { u8 instance = hdev->cur_adv_instance; -- cgit v1.2.3