mars linux dmesg tail -n 40 629 500159 ohci_hcd 0000 00 12 auto-stop r

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mars linux # dmesg | tail -n 40
[ 629.500159] ohci_hcd 0000:00:12.1: auto-stop root hub
[ 630.957151] hub 1-0:1.0: state 7 ports 6 chg 0000 evt 0020
[ 630.957164] ehci_hcd 0000:00:12.2: GetStatus port 5 status 001803 POWER sig=j CSC CONNECT
[ 630.957173] hub 1-0:1.0: port 5, status 0501, change 0001, 480 Mb/s
[ 631.000028] hub 4-0:1.0: hub_suspend
[ 631.000036] usb usb4: bus auto-suspend
[ 631.000040] ohci_hcd 0000:00:12.1: suspend root hub
[ 631.062149] hub 1-0:1.0: debounce: port 5: total 100ms stable 100ms status 0x501
[ 631.113035] ehci_hcd 0000:00:12.2: port 5 full speed --> companion
[ 631.113043] ehci_hcd 0000:00:12.2: GetStatus port 5 status 003801 POWER OWNER sig=j CONNECT
[ 631.113086] hub 1-0:1.0: port 5 not reset yet, waiting 50ms
[ 631.113093] usb usb4: usb resume
[ 631.119019] ohci_hcd 0000:00:12.1: wakeup root hub
[ 631.164028] ehci_hcd 0000:00:12.2: GetStatus port 5 status 003002 POWER OWNER sig=se0 CSC
[ 631.164055] hub 1-0:1.0: state 7 ports 6 chg 0000 evt 0020
[ 631.179147] hub 4-0:1.0: hub_resume
[ 631.179164] ohci_hcd 0000:00:12.1: GetStatus roothub.portstatus [1] = 0x00010101 CSC PPS CCS
[ 631.179167] hub 4-0:1.0: port 2: status 0101 change 0001
[ 631.280028] hub 4-0:1.0: state 7 ports 3 chg 0004 evt 0000
[ 631.280044] hub 4-0:1.0: port 2, status 0101, change 0000, 12 Mb/s
[ 631.301176] ohci_hcd 0000:00:12.1: port[1] reset timeout, stat 00000111
[ 631.352029] ohci_hcd 0000:00:12.1: GetStatus roothub.portstatus [1] = 0x00100103 PRSC PPS PES CCS
[ 631.403150] usb 4-2: new full speed USB device using ohci_hcd and address 3
[ 631.424060] ohci_hcd 0000:00:12.1: port[1] reset timeout, stat 00000113
[ 631.477149] ohci_hcd 0000:00:12.1: GetStatus roothub.portstatus [1] = 0x00100103 PRSC PPS PES CCS
[ 631.548058] usb 4-2: default language 0x0409
[ 631.552099] usb 4-2: uevent
[ 631.552346] usb 4-2: usb_probe_device
[ 631.552351] usb 4-2: configuration #1 chosen from 1 choice
[ 631.554038] usb 4-2: adding 4-2:1.0 (config #1, interface 0)
[ 631.554057] usb 4-2:1.0: uevent
[ 631.554331] drivers/usb/core/inode.c: creating file '003'
[ 631.554408] usb 4-2: New USB device found, idVendor=6547, idProduct=0232
[ 631.554411] usb 4-2: New USB device strings: Mfr=1, Product=3, SerialNumber=0
[ 631.554413] usb 4-2: Product: USB-UART Controller
[ 631.554415] usb 4-2: Manufacturer: ArkMicroChips
[ 631.554419] hub 4-0:1.0: state 7 ports 3 chg 0000 evt 0004
[ 633.164141] hub 1-0:1.0: hub_suspend
[ 633.164293] usb usb1: bus auto-suspend
[ 633.164297] ehci_hcd 0000:00:12.2: suspend root hub
mars linux # dmesg | tail -n 40
[ 633.164293] usb usb1: bus auto-suspend
[ 633.164297] ehci_hcd 0000:00:12.2: suspend root hub
[ 644.037246] usb usb7: usb auto-resume
[ 644.037256] ohci_hcd 0000:00:14.5: resume root hub
[ 644.097025] hub 7-0:1.0: hub_resume
[ 644.097263] usb usb2: usb auto-resume
[ 644.097268] ehci_hcd 0000:00:13.2: resume root hub
[ 644.125422] hub 7-0:1.0: state 7 ports 2 chg 0000 evt 0000
[ 644.136137] hub 2-0:1.0: hub_resume
[ 644.136203] hub 2-0:1.0: state 7 ports 6 chg 0000 evt 0000
[ 644.136290] usb usb6: usb auto-resume
[ 644.136297] ohci_hcd 0000:00:13.1: resume root hub
[ 644.196137] hub 6-0:1.0: hub_resume
[ 644.196244] hub 6-0:1.0: state 7 ports 3 chg 0000 evt 0000
[ 644.196348] usb usb5: usb auto-resume
[ 644.196355] ohci_hcd 0000:00:13.0: resume root hub
[ 644.256141] hub 5-0:1.0: hub_resume
[ 644.256347] usb usb1: usb auto-resume
[ 644.256352] ehci_hcd 0000:00:12.2: resume root hub
[ 644.284607] hub 5-0:1.0: state 7 ports 3 chg 0000 evt 0000
[ 644.317669] hub 1-0:1.0: hub_resume
[ 644.317826] hub 1-0:1.0: state 7 ports 6 chg 0000 evt 0000
[ 645.250024] ohci_hcd 0000:00:14.5: auto-stop root hub
[ 645.250043] ohci_hcd 0000:00:13.1: auto-stop root hub
[ 645.250059] ohci_hcd 0000:00:13.0: auto-stop root hub
[ 646.125024] hub 7-0:1.0: hub_suspend
[ 646.125174] usb usb7: bus auto-suspend
[ 646.125180] ohci_hcd 0000:00:14.5: suspend root hub
[ 646.140109] hub 2-0:1.0: hub_suspend
[ 646.140252] usb usb2: bus auto-suspend
[ 646.140255] ehci_hcd 0000:00:13.2: suspend root hub
[ 646.196027] hub 6-0:1.0: hub_suspend
[ 646.196170] usb usb6: bus auto-suspend
[ 646.196175] ohci_hcd 0000:00:13.1: suspend root hub
[ 646.997025] hub 5-0:1.0: hub_suspend
[ 646.997169] usb usb5: bus auto-suspend
[ 646.997175] ohci_hcd 0000:00:13.0: suspend root hub
[ 646.997258] hub 1-0:1.0: hub_suspend
[ 646.997307] usb usb1: bus auto-suspend
[ 646.997310] ehci_hcd 0000:00:12.2: suspend root hub