Add the error code to the message "Failed to claim iso interface". That allows us to know which error case usb_driver_claim_interface() hit. Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx> --- drivers/bluetooth/btusb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index f69df515d668..df8889e8759b 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2649,7 +2649,7 @@ static void btusb_mtk_claim_iso_intf(struct btusb_data *data) device_unlock(&btmtk_data->isopkt_intf->dev); if (err < 0) { btmtk_data->isopkt_intf = NULL; - bt_dev_err(data->hdev, "Failed to claim iso interface"); + bt_dev_err(data->hdev, "Failed to claim iso interface: %d", err); return; } -- 2.48.0.rc2.279.g1de40edade-goog