diff options
| author |   Abhishek Pandit-Subedi <abhishekpandit@chromium.org> | 2020-03-11 08:54:01 -0700 |
|---|---|---|
| committer |   Marcel Holtmann <marcel@holtmann.org> | 2020-03-11 18:01:47 +0100 |
| commit | 4f40afc6c76451daff7d0dcfc8a3d113ccf65bfc (patch) | |
| tree | 707dea2a3f4ae13aefd6b7797394e2b2485ad26e /net/bluetooth/hci_core.c | |
| parent | Bluetooth: Handle PM_SUSPEND_PREPARE and PM_POST_SUSPEND (diff) | |
| download | linux-dev-4f40afc6c76451daff7d0dcfc8a3d113ccf65bfc.tar.xz linux-dev-4f40afc6c76451daff7d0dcfc8a3d113ccf65bfc.zip | |
Bluetooth: Handle BR/EDR devices during suspend
To handle BR/EDR devices, we first disable page scan and disconnect all
connected devices. Once that is complete, we add event filters (for
devices that can wake the system) and re-enable page scan.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth/hci_core.c')
| -rw-r--r-- | net/bluetooth/hci_core.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 39aa21a1fe92..dbd2ad3a26ed 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -3325,16 +3325,31 @@ static int hci_suspend_notifier(struct notifier_block *nb, unsigned long action, goto done; if (action == PM_SUSPEND_PREPARE) { - hdev->suspend_state_next = BT_SUSPENDED; + /* Suspend consists of two actions: + * - First, disconnect everything and make the controller not + * connectable (disabling scanning) + * - Second, program event filter/whitelist and enable scan + */ + hdev->suspend_state_next = BT_SUSPEND_DISCONNECT; set_bit(SUSPEND_PREPARE_NOTIFIER, hdev->suspend_tasks); queue_work(hdev->req_workqueue, &hdev->suspend_prepare); - ret = hci_suspend_wait_event(hdev); + + /* If the disconnect portion failed, don't attempt to complete + * by configuring the whitelist. The suspend notifier will + * follow a cancelled suspend with a PM_POST_SUSPEND + * notification. + */ + if (!ret) { + hdev->suspend_state_next = BT_SUSPEND_COMPLETE; + set_bit(SUSPEND_PREPARE_NOTIFIER, hdev->suspend_tasks); + queue_work(hdev->req_workqueue, &hdev->suspend_prepare); + ret = hci_suspend_wait_event(hdev); + } } else if (action == PM_POST_SUSPEND) { hdev->suspend_state_next = BT_RUNNING; set_bit(SUSPEND_PREPARE_NOTIFIER, hdev->suspend_tasks); queue_work(hdev->req_workqueue, &hdev->suspend_prepare); - ret = hci_suspend_wait_event(hdev); } @@ -3399,6 +3414,7 @@ struct hci_dev *hci_alloc_dev(void) INIT_LIST_HEAD(&hdev->mgmt_pending); INIT_LIST_HEAD(&hdev->blacklist); INIT_LIST_HEAD(&hdev->whitelist); + INIT_LIST_HEAD(&hdev->wakeable); INIT_LIST_HEAD(&hdev->uuids); INIT_LIST_HEAD(&hdev->link_keys); INIT_LIST_HEAD(&hdev->long_term_keys); |