return out of usb_enable_lpm() if bos descriptors are null

2017-08-21 22:28:27 -04:00 · 2017-08-21 22:28:27 -04:00 · f0a4043b24
parent 8156948243
commit f0a4043b24
1 changed files with 2 additions and 1 deletions
--- a/kernel/drivers/usb/core/hub.c
+++ b/kernel/drivers/usb/core/hub.c
@ -4049,7 +4049,8 @@ void usb_enable_lpm(struct usb_device *udev)
 	if (!udev || !udev->parent ||
 			udev->speed < USB_SPEED_SUPER ||
 			!udev->lpm_capable ||
-			udev->state < USB_STATE_DEFAULT)
+			udev->state < USB_STATE_DEFAULT ||
+			!udev->bos || !udev->bos->ss_cap)
 		return;

 	udev->lpm_disable_count--;