mirror of https://gitee.com/openkylin/linux.git
USB: Make sure to fetch the BOS desc for roothubs.
The BOS descriptor is normally fetched and stored in the usb_device->bos during enumeration. USB 3.0 roothubs don't undergo enumeration, but we need them to have a BOS descriptor, since each xHCI host has a different U1 and U2 exit latency. Make sure to fetch the BOS descriptor for USB 3.0 roothubs. It will be freed when the roothub usb_device is released. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: Andiry Xu <andiry.xu@amd.com>
This commit is contained in:
parent
797b0ca5e6
commit
448b6eb1e0
|
@ -997,6 +997,15 @@ 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) {
|
||||
retval = usb_get_bos_descriptor(usb_dev);
|
||||
if (retval < 0) {
|
||||
mutex_unlock(&usb_bus_list_lock);
|
||||
dev_dbg(parent_dev, "can't read %s bos descriptor %d\n",
|
||||
dev_name(&usb_dev->dev), retval);
|
||||
return retval;
|
||||
}
|
||||
}
|
||||
|
||||
retval = usb_new_device (usb_dev);
|
||||
if (retval) {
|
||||
|
|
Loading…
Reference in New Issue