无法加载USB

sou***

请问这是什么问题
usb 1-1: device descriptor read/64, error -71
[   83.790000] usb 1-1: device descriptor read/64, error -71
[   84.020000] usb 1-1: new full-speed USB device number 3 using ehci-platform
[   84.240000] usb 1-1: device descriptor read/64, error -71
[   84.560000] usb 1-1: device descriptor read/64, error -71
[   84.790000] usb 1-1: new full-speed USB device number 4 using ehci-platform
[   85.270000] usb 1-1: device not accepting address 4, error -71
[   85.390000] usb 1-1: new full-speed USB device number 5 using ehci-platform
[   85.880000] usb 1-1: device not accepting address 5, error -71
[   85.880000] hub 1-0:1.0: unable to enumerate USB device on port 1

wag***

我的MW300R v4 跟你一样的问题，我刷的比较新的 openwrt 3.6.11内核版，日志中出现N条：unable to enumerate USB device on port 1，U盘，硬盘都不行，FAT32、NTFS、EXT2、EXT3分区格式都一样的问题！

8246***

我的841n v7跟2L一样的问题，U盘、摄像头都挂不上，是不是硬件坏了？