用Tiny210 SDK2的底板，用USB摄像头做了个视频采集，时常发生USB设备突然找不到的情况，出现状况如下：
[ 5759.772851] hub 1-0:1.0: port 1 disabled by hub (EMI?), re-enabling...
[ 5759.772953] usb 1-1: USB disconnect, address 2
[ 5759.773004] usb 1-1.2: USB disconnect, address 4
[ 5759.773047] usb 1-1.2.4: USB disconnect, address 5
Unget VIDIOC_QBUF: No such device
进入/dev查看，的确没有video3这个设备额。。。重启或者重新插拔USB接口恢复正常；
貌似是HUB出现问题了额。。。请问该如何解决
