fix #I2E09M

113197aa · Caoruihong · Gitee · 5ba30a2a · 113197aa
隐藏空白更改
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Showing with 1 addition and 1 deletion

sys/dev/usb/usb_dev.c sys/dev/usb/usb_dev.c +1 -1

未找到文件。
--- a/sys/dev/usb/usb_dev.c
+++ b/sys/dev/usb/usb_dev.c
@@ -226,7 +226,7 @@ error:
 		usbd_enum_unlock(cpd->udev);

 	if (crd->is_uref) {
-		if (--(cpd->udev->refcount) == 0)
+		if (cpd->udev && --(cpd->udev->refcount) == 0)
 			cv_broadcast(&cpd->udev->ref_cv);
 	}
 	mtx_unlock(&usb_ref_lock);