usb ehci驱动的错误提示

noshape

在访问usb的时候，提示如下错误打印信息，麻烦帮我看下，谢谢！
[   74.820000] ehci ehci: fatal command 010028 (park)=0 ithresh=1 Async period=256 HALT
[   74.820000] ehci ehci: fatal status 49088 Async Halt FLR
[   74.820000] ehci ehci: fatal error
[   74.820000] ehci ehci: reset command 01002a (park)=0 ithresh=1 Async period=256 Reset HALT
[   74.820000] ehci ehci: HC died; cleaning up
[   74.830000] hub 1-0:1.0: state 0 ports 1 chg 0000 evt 0000
[   74.830000] usb 1-1: USB disconnect, address 3
[   74.830000] usb 1-1: unregistering device
[   74.830000] usb 1-1: usb_disable_device nuking all URBs
[   74.830000] usb 1-1: unregistering interface 1-1:1.0
[   74.840000] usb_endpoint usbdev1.3_ep81: ep_device_release called for usbdev1.3_ep81
[   74.850000] usb_endpoint usbdev1.3_ep02: ep_device_release called for usbdev1.3_ep02
[   74.850000] usb 1-1:1.0: uevent
[   74.850000] usb 1-1:1.0: uevent
[   74.890000] VPP Module Opened
[   74.890000] INIT...
[   74.940000] usb_endpoint usbdev1.3_ep00: ep_device_release called for usbdev1.3_ep00
[   74.940000] usb 1-1: uevent
[   76.780000] VPP Module Released

这是什么原因造成的阿？谢谢啦！