diff options
| author | Yuri Benditovich <yuri.benditovich@daynix.com> | 2020-01-08 11:10:43 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2020-01-13 09:17:31 +0100 |
| commit | 7bacaf5fea5729d400201106359f6803b15621af (patch) | |
| tree | aec306ed8f89bebe33f6325a9bbfd3dc97b79f3f /hw/usb | |
| parent | dc65a5bdc9fa543690a775b50d4ffbeb22c56d6d (diff) | |
| download | qemu-7bacaf5fea5729d400201106359f6803b15621af.zip qemu-7bacaf5fea5729d400201106359f6803b15621af.tar.gz qemu-7bacaf5fea5729d400201106359f6803b15621af.tar.bz2 | |
usb-host: remove 'remote wakeup' flag from configuration descriptor
If the redirected device has this capability, Windows guest may
place the device into D2 and expect it to wake when the device
becomes active, but this will never happen. For example, when
internal Bluetooth adapter is redirected, keyboards and mice
connected to it do not work. Current commit removes this
capability (starting from machine 5.0)
Set 'usb-host.suppress-remote-wake' property to 'off' to keep
'remote wake' as is or to 'on' to remove 'remote wake' on
4.2 or earlier.
Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
Message-id: 20200108091044.18055-2-yuri.benditovich@daynix.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/usb')
| -rw-r--r-- | hw/usb/host-libusb.c | 20 | ||||
| -rw-r--r-- | hw/usb/trace-events | 1 |
2 files changed, 21 insertions, 0 deletions
diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c index fcf48c0..00e0e36 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(), }; diff --git a/hw/usb/trace-events b/hw/usb/trace-events index 2d37133..1c24d82 100644 --- a/hw/usb/trace-events +++ b/hw/usb/trace-events @@ -266,3 +266,4 @@ usb_host_parse_config(int bus, int addr, int value, int active) "dev %d:%d, valu usb_host_parse_interface(int bus, int addr, int num, int alt, int active) "dev %d:%d, num %d, alt %d, active %d" usb_host_parse_endpoint(int bus, int addr, int ep, const char *dir, const char *type, int active) "dev %d:%d, ep %d, %s, %s, active %d" usb_host_parse_error(int bus, int addr, const char *errmsg) "dev %d:%d, msg %s" +usb_host_remote_wakeup_removed(int bus, int addr) "dev %d:%d" |