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Bluetooth: Notify suspend on le conn failed

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When suspending, Bluetooth disconnects all connected peers devices. If
an LE connection is started but isn't completed, we will see an LE
Create Connection Cancel instead of an HCI disconnect. This just adds
a check to see if an LE cancel was the last disconnected device and wake
the suspend thread when that is the case.

Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Archie Pusaka <apusaka@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Abhishek Pandit-Subedi 2021-03-01 12:06:04 -08:00 committed by Marcel Holtmann
parent 201cf3976c
commit 5cb08553f7
1 changed files with 10 additions and 0 deletions
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10
net/bluetooth/hci_conn.c
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@ -772,6 +772,16 @@ void hci_le_conn_failed(struct hci_conn *conn, u8 status)
hci_conn_del(conn);
/* The suspend notifier is waiting for all devices to disconnect and an
* LE connect cancel will result in an hci_le_conn_failed. Once the last
* connection is deleted, we should also wake the suspend queue to
* complete suspend operations.
*/
if (list_empty(&hdev->conn_hash.list) &&
test_and_clear_bit(SUSPEND_DISCONNECTING, hdev->suspend_tasks)) {
wake_up(&hdev->suspend_wait_q);
}
/* Since we may have temporarily stopped the background scanning in
* favor of connection establishment, we should restart it.
*/