this is an reference to: https://bugzilla.kernel.org/show_bug.cgi?id=193571 There's been numerous reported instances where BTUSB_QCA_ROME bluetooth controllers stop functioning upon resume from suspend. These devices seem to be losing power during suspend. Patch will detect a status change on resume and perform a reset. **patch below is based on this previous patch that affected Realtek btusb devices http://www.spinics.net/lists/linux-bluetooth/msg61943.html diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index fa24d69..2503709 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -3067,6 +3067,12 @@ 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; + + /* QCA Rome devices lose their updated firmware over suspend, + * but the USB hub doesn't notice any status change. + * Explicitly request a device reset on resume. + */ + set_bit(BTUSB_RESET_RESUME, &data->flags); } #ifdef CONFIG_BT_HCIBTUSB_RTL -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
