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>
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@ -997,6 +997,15 @@ static int register_root_hub(struct usb_hcd *hcd)
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dev_name(&usb_dev->dev), retval);
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return (retval < 0) ? retval : -EMSGSIZE;
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}
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if (usb_dev->speed == USB_SPEED_SUPER) {
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retval = usb_get_bos_descriptor(usb_dev);
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if (retval < 0) {
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mutex_unlock(&usb_bus_list_lock);
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dev_dbg(parent_dev, "can't read %s bos descriptor %d\n",
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dev_name(&usb_dev->dev), retval);
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return retval;
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}
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}
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retval = usb_new_device (usb_dev);
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if (retval) {
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