[root@localhost linux-2.6]# lsusb
Bus 002 Device 004: ID 05ca:1880 Ricoh Co., Ltd
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 003: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
Bus 006 Device 002: ID 06a2:0033 Topro Technology, Inc. USB Mouse
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 005: ID 0c45:62c0 Microdia Sonix USB 2.0 Camera
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub [root@localhost linux-2.6]#
关键是红色那句
[root@localhost linux-2.6]# cat /proc/kmsg
<7>[ 4020.883267] usb usb1: usb resume <7>[ 4020.883278] ehci_hcd 0000:00:1a.7: resume root hub <7>[ 4021.004243] hub 1-0:1.0: state 7 ports 6 chg 0002 evt 0000 <7>[ 4021.004321] hub 1-0:1.0: port 1, status 0501, change 0000, 480 Mb/s <6>[ 4021.106273] usb 1-1:new high speed USB device using ehci_hcd and address 5 <7>[ 4021.338727] usb 1-1: skipped 1 descriptor after configuration <7>[ 4021.338737] usb 1-1: skipped 6 descriptors after interface <7>[ 4021.338762] usb 1-1: skipped 1 descriptor after endpoint <7>[ 4021.338769] usb 1-1: skipped 9 descriptors after interface <7>[ 4021.348799] usb 1-1:1.0: uevent <6>[ 4021.358579] input: USB 2.0 Camera as /devices/pci0000:00/0000:00:1a.7/usb1/1-1/1-1:1.0/input/input11 <7>[ 4021.368547] drivers/usb/core/inode.c: creating file'005' <7>[ 4021.455075] usb 1-1: unlink qh4-0001/e8ce4cb0 start 0 [1/0 us]
