/var/log/messages ファイルに "kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6" エラーが記録される

Issue

• /var/log/messages ファイルに以下のエラーメッセージが記録されるのはなぜですか?

Aug 22 00:52:01 localhost kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6
Aug 22 01:10:08 localhost kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6
Aug 22 04:04:34 localhost init:Trying to re-exec init
Aug 22 06:21:16 localhost kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6
Aug 22 12:47:14 localhost kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6
Aug 22 16:34:29 localhost last message repeated 2 times
Aug 22 17:21:17 localhost kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6
Aug 22 17:41:32 localhost kernel:Warning:/proc/ide/hd?/settings interface is obsolete, and will be removed soon!