diff options
Diffstat (limited to 'hw/usb/host-libusb.c')
| -rw-r--r-- | hw/usb/host-libusb.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c index fcf48c0193..00e0e36369 100644 --- a/hw/usb/host-libusb.c +++ b/hw/usb/host-libusb.c @@ -88,6 +88,7 @@ struct USBHostDevice { bool needs_autoscan; bool allow_one_guest_reset; bool allow_all_guest_resets; + bool suppress_remote_wake; /* state */ QTAILQ_ENTRY(USBHostDevice) next; @@ -386,6 +387,8 @@ static void LIBUSB_CALL usb_host_req_complete_ctrl(struct libusb_transfer *xfer) r->p->status = status_map[xfer->status]; r->p->actual_length = xfer->actual_length; if (r->in && xfer->actual_length) { + USBDevice *udev = USB_DEVICE(s); + struct libusb_config_descriptor *conf = (void *)r->cbuf; memcpy(r->cbuf, r->buffer + 8, xfer->actual_length); /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices @@ -394,6 +397,21 @@ static void LIBUSB_CALL usb_host_req_complete_ctrl(struct libusb_transfer *xfer) r->cbuf[7] == 9) { r->cbuf[7] = 64; } + /* + *If this is GET_DESCRIPTOR request for configuration descriptor, + * remove 'remote wakeup' flag from it to prevent idle power down + * in Windows guest + */ + if (s->suppress_remote_wake && + udev->setup_buf[0] == USB_DIR_IN && + udev->setup_buf[1] == USB_REQ_GET_DESCRIPTOR && + udev->setup_buf[3] == USB_DT_CONFIG && udev->setup_buf[2] == 0 && + xfer->actual_length > + offsetof(struct libusb_config_descriptor, bmAttributes) && + (conf->bmAttributes & USB_CFG_ATT_WAKEUP)) { + trace_usb_host_remote_wakeup_removed(s->bus_num, s->addr); + conf->bmAttributes &= ~USB_CFG_ATT_WAKEUP; + } } trace_usb_host_req_complete(s->bus_num, s->addr, r->p, r->p->status, r->p->actual_length); @@ -1596,6 +1614,8 @@ static Property usb_host_dev_properties[] = { LIBUSB_LOG_LEVEL_WARNING), DEFINE_PROP_BIT("pipeline", USBHostDevice, options, USB_HOST_OPT_PIPELINE, true), + DEFINE_PROP_BOOL("suppress-remote-wake", USBHostDevice, + suppress_remote_wake, true), DEFINE_PROP_END_OF_LIST(), }; |