From 3b0d5250be30e76727284bb9e4c26b662ede7378 Mon Sep 17 00:00:00 2001 From: Tim Jiang Date: Fri, 18 Dec 2020 18:12:11 +0800 Subject: [PATCH] Bluetooth: btusb: add shutdown function for wcn6855 we should send hci reset command before bt turn off, which can reset bt firmware status. Signed-off-by: Tim Jiang Signed-off-by: Marcel Holtmann --- drivers/bluetooth/btusb.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 1b69016..4670a37 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -4260,6 +4260,20 @@ static bool btusb_prevent_wake(struct hci_dev *hdev) return !device_may_wakeup(&data->udev->dev); } +static int btusb_shutdown_qca(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + bt_dev_err(hdev, "HCI reset during shutdown failed"); + return PTR_ERR(skb); + } + kfree_skb(skb); + + return 0; +} + static int btusb_probe(struct usb_interface *intf, const struct usb_device_id *id) { @@ -4519,6 +4533,7 @@ static int btusb_probe(struct usb_interface *intf, if (id->driver_info & BTUSB_QCA_WCN6855) { data->setup_on_usb = btusb_setup_qca; + hdev->shutdown = btusb_shutdown_qca; hdev->set_bdaddr = btusb_set_bdaddr_wcn6855; hdev->cmd_timeout = btusb_qca_cmd_timeout; set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); -- 2.7.4