Commit 6933568a authored by Abhishek Pandit-Subedi's avatar Abhishek Pandit-Subedi Committed by Marcel Holtmann
Browse files

Bluetooth: btusb: Reset port on cmd timeout 



QCA_ROME sometimes gets into a state where it is unresponsive to
commands. Since it doesn't have support for a reset gpio, reset the usb
port when this occurs instead.

Signed-off-by: default avatarAbhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 737cd060

drivers/bluetooth/btusb.c

+17 −0
Original line number Diff line number Diff line
@@ -573,6 +573,22 @@ static void btusb_rtl_cmd_timeout(struct hci_dev *hdev) 
	gpiod_set_value_cansleep(reset_gpio, 0);

}



static void btusb_qca_cmd_timeout(struct hci_dev *hdev)

{

	struct btusb_data *data = hci_get_drvdata(hdev);

	int err;



	if (++data->cmd_timeout_cnt < 5)

		return;



	bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device.");

	err = usb_autopm_get_interface(data->intf);

	if (!err)

		usb_queue_reset_device(data->intf);

	else

		bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err);

}



static inline void btusb_free_frags(struct btusb_data *data)

{

	unsigned long flags;
@@ -3964,6 +3980,7 @@ static int btusb_probe(struct usb_interface *intf, 
	if (id->driver_info & BTUSB_QCA_ROME) {

		data->setup_on_usb = btusb_setup_qca;

		hdev->set_bdaddr = btusb_set_bdaddr_ath3012;

		hdev->cmd_timeout = btusb_qca_cmd_timeout;

		set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);

		btusb_check_needs_reset_resume(intf);

	}