diff options
Diffstat (limited to 'kernel/drivers/usb/core/hcd.c')
| -rw-r--r-- | kernel/drivers/usb/core/hcd.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/drivers/usb/core/hcd.c b/kernel/drivers/usb/core/hcd.c index 69398f933..ab14f8471 100644 --- a/kernel/drivers/usb/core/hcd.c +++ b/kernel/drivers/usb/core/hcd.c @@ -1022,9 +1022,12 @@ static int register_root_hub(struct usb_hcd *hcd) dev_name(&usb_dev->dev), retval); return (retval < 0) ? retval : -EMSGSIZE; } - if (usb_dev->speed == USB_SPEED_SUPER) { + + if (le16_to_cpu(usb_dev->descriptor.bcdUSB) >= 0x0201) { retval = usb_get_bos_descriptor(usb_dev); - if (retval < 0) { + if (!retval) { + usb_dev->lpm_capable = usb_device_supports_lpm(usb_dev); + } else if (usb_dev->speed == USB_SPEED_SUPER) { mutex_unlock(&usb_bus_list_lock); dev_dbg(parent_dev, "can't read %s bos descriptor %d\n", dev_name(&usb_dev->dev), retval); |