解决USB设备不断重新连接问题

[weijiz]

在使用USB设备的时候有时会发现设备不断重新连接的情况。比如如果看syslog会发现这样的记录

Jun 21 05:36:09 hoperun-developer kernel: [ 6862.683901] usb 1-1.1: New USB device found, idVendor=05a3, idProduct=9230
Jun 21 05:36:09 hoperun-developer kernel: [ 6862.683918] usb 1-1.1: New USB device strings: Mfr=2, Product=1, SerialNumber=0
Jun 21 05:36:09 hoperun-developer kernel: [ 6862.683924] usb 1-1.1: Product: USB 2.0 Camera
Jun 21 05:36:09 hoperun-developer kernel: [ 6862.683929] usb 1-1.1: Manufacturer: HD Camera Manufacturer
Jun 21 05:36:09 hoperun-developer kernel: [ 6862.718478] uvcvideo: Found UVC 1.00 device USB 2.0 Camera (05a3:9230)
Jun 21 05:36:09 hoperun-developer kernel: [ 6862.759942] input: USB 2.0 Camera as /devices/platform/soc/soc:hisi_dwc3/ff100000.dwc3/xhci-hcd.1.auto/usb1/1-1/1-1.1/1-1.1:1.0/input/input34
Jun 21 05:36:09 hoperun-developer kernel: [ 6862.770842] hub 1-1:1.0: hub_ext_port_status failed (err = -71)
Jun 21 05:36:10 hoperun-developer kernel: [ 6863.707508] usb 1-1.1: USB disconnect, device number 45
Jun 21 05:36:10 hoperun-developer kernel: [ 6863.899217] usb 1-1: reset high-speed USB device number 2 using xhci-hcd
Jun 21 05:36:10 hoperun-developer kernel: [ 6864.386790] usb 1-1.1: new high-speed USB device number 46 using xhci-hcd
Jun 21 05:36:10 hoperun-developer kernel: [ 6864.559916] usb 1-1.1: New USB device found, idVendor=05a3, idProduct=9230
Jun 21 05:36:10 hoperun-developer kernel: [ 6864.559939] usb 1-1.1: New USB device strings: Mfr=2, Product=1, SerialNumber=0
Jun 21 05:36:10 hoperun-developer kernel: [ 6864.559948] usb 1-1.1: Product: USB 2.0 Camera
Jun 21 05:36:10 hoperun-developer kernel: [ 6864.559957] usb 1-1.1: Manufacturer: HD Camera Manufacturer
Jun 21 05:36:10 hoperun-developer kernel: [ 6864.574552] uvcvideo: Found UVC 1.00 device USB 2.0 Camera (05a3:9230)
Jun 21 05:36:11 hoperun-developer kernel: [ 6864.616686] input: USB 2.0 Camera as /devices/platform/soc/soc:hisi_dwc3/ff100000.dwc3/xhci-hcd.1.auto/usb1/1-1/1-1.1/1-1.1:1.0/input/input35
Jun 21 05:36:12 hoperun-developer kernel: [ 6865.819516] usb 1-1.1: USB disconnect, device number 46
Jun 21 05:36:12 hoperun-developer kernel: [ 6866.011230] usb 1-1: reset high-speed USB device number 2 using xhci-hcd
Jun 21 05:36:12 hoperun-developer kernel: [ 6866.438866] hub 1-1:1.0: hub_ext_port_status failed (err = -71)
Jun 21 05:36:13 hoperun-developer kernel: [ 6866.710782] usb 1-1.1: new high-speed USB device number 47 using xhci-hcd
Jun 21 05:36:13 hoperun-developer kernel: [ 6866.883601] usb 1-1.1: New USB device found, idVendor=05a3, idProduct=9230
Jun 21 05:36:13 hoperun-developer kernel: [ 6866.883617] usb 1-1.1: New USB device strings: Mfr=2, Product=1, SerialNumber=0
Jun 21 05:36:13 hoperun-developer kernel: [ 6866.883623] usb 1-1.1: Product: USB 2.0 Camera
Jun 21 05:36:13 hoperun-developer kernel: [ 6866.883627] usb 1-1.1: Manufacturer: HD Camera Manufacturer
Jun 21 05:36:13 hoperun-developer kernel: [ 6866.910450] uvcvideo: Found UVC 1.00 device USB 2.0 Camera (05a3:9230)
Jun 21 05:36:13 hoperun-developer kernel: [ 6866.951825] input: USB 2.0 Camera as /devices/platform/soc/soc:hisi_dwc3/ff100000.dwc3/xhci-hcd.1.auto/usb1/1-1/1-1.1/1-1.1:1.0/input/input36
Jun 21 05:36:14 hoperun-developer kernel: [ 6867.739554] usb 1-1.1: USB disconnect, device number 47

这可能是由于USB的不同驱动相互冲突导致的。在编译内核的时候禁用掉不相关的驱动。比如如果你是USB3.0的接口，就禁用掉2.0和1.0的驱动。

然后编译更新内核就可以了。