struct usb_device *parent;
unsigned int num_hubs;
- if (state == USB3_LPM_U2)
- return 0;
-
/* Don't enable U1 if the device is on a 2nd tier hub or lower. */
for (parent = udev->parent, num_hubs = 0; parent->parent;
parent = parent->parent)
if (num_hubs < 2)
return 0;
- dev_dbg(&udev->dev, "Disabling U1 link state for device"
+ dev_dbg(&udev->dev, "Disabling U1/U2 link state for device"
" below second-tier hub.\n");
dev_dbg(&udev->dev, "Plug device into first-tier hub "
"to decrease power consumption.\n");
return timeout;
}
- if (xhci_check_tier_policy(xhci, udev, state) < 0)
- return timeout;
-
/* Gather some information about the currently installed configuration
* and alternate interface settings.
*/
!xhci->devs[udev->slot_id])
return USB3_LPM_DISABLED;
+ if (xhci_check_tier_policy(xhci, udev, state) < 0)
+ return USB3_LPM_DISABLED;
+
hub_encoded_timeout = xhci_calculate_lpm_timeout(hcd, udev, state);
mel = calculate_max_exit_latency(udev, state, hub_encoded_timeout);
if (mel < 0) {