diff options
Diffstat (limited to 'drivers/usb/core/hub.c')
| -rw-r--r-- | drivers/usb/core/hub.c | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 2d773cbe191..50411cd0ac4 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2421,11 +2421,26 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) * we don't explicitly enable it here. */ if (udev->do_remote_wakeup) { - status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), - USB_REQ_SET_FEATURE, USB_RECIP_DEVICE, - USB_DEVICE_REMOTE_WAKEUP, 0, - NULL, 0, - USB_CTRL_SET_TIMEOUT); + if (!hub_is_superspeed(hub->hdev)) { + status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + USB_REQ_SET_FEATURE, USB_RECIP_DEVICE, + USB_DEVICE_REMOTE_WAKEUP, 0, + NULL, 0, + USB_CTRL_SET_TIMEOUT); + } else { + /* Assume there's only one function on the USB 3.0 + * device and enable remote wake for the first + * interface. FIXME if the interface association + * descriptor shows there's more than one function. + */ + status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + USB_REQ_SET_FEATURE, + USB_RECIP_INTERFACE, + USB_INTRF_FUNC_SUSPEND, + USB_INTRF_FUNC_SUSPEND_RW, + NULL, 0, + USB_CTRL_SET_TIMEOUT); + } if (status) { dev_dbg(&udev->dev, "won't remote wakeup, status %d\n", status); |