Re: error during device resume

On Wednesday 10 October 2007, Oliver Neukum wrote:
> Hi,
> 
> I got this error with 2.6.23-rc9 on X86_64. I am trying to replicate it.

And I guess you did, then started a second thread for it?


> Oct 10 14:13:42 oenone kernel: usb 1-4.2: usb auto-resume
> Oct 10 14:13:42 oenone kernel: usb 1-4.2: finish resume
> Oct 10 14:13:42 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0in 3strikes
> Oct 10 14:13:42 oenone kernel: usb 1-4: clear tt buffer port 2, a8 ep0 t00080248
> Oct 10 14:13:42 oenone kernel: usb 1-4.2: gone after usb resume? status -71
> Oct 10 14:13:42 oenone kernel: usb 1-4.2: can't resume, status -71

At this point it looks as if the device had problems exiting
a USB suspend state.  When the host couldn't talk to that device,
it did the usual disconnect processing:

> Oct 10 14:13:42 oenone kernel: hub 1-4:1.0: logical disconnect on port 2
> Oct 10 14:13:42 oenone kernel: hub 1-4:1.0: state 7 ports 7 chg 0004 evt 0000
> Oct 10 14:13:42 oenone kernel: hub 1-4:1.0: port 2, status 0101, change 0000, 12 Mb/s
> Oct 10 14:13:42 oenone kernel: usb 1-4.2: USB disconnect, address 8
> Oct 10 14:13:42 oenone kernel: usb 1-4.2: unregistering device
> Oct 10 14:13:42 oenone kernel: usb 1-4.2: usb_disable_device nuking all URBs
> 
> The port is dead afterwards:

Is this with the same device, or a different one?  If it's the same
device, that could be explained by persistent problems in that device,
which its firmware didn't clear up.

If it's a different device, I'll wonder about that high speed hub.
I have seen a few ill-behaved hubs, but the high speed ones tend to
be saner.  Some things to try then include a disconnect/reconnect
cycle for that hub; and power cycling the hub.


> Oct 10 14:16:50 oenone kernel: hub 1-4:1.0: state 7 ports 7 chg 0000 evt 0004
> Oct 10 14:17:36 oenone kernel: hub 1-4:1.0: state 7 ports 7 chg 0000 evt 0004
> Oct 10 14:17:36 oenone kernel: hub 1-4:1.0: port 2, status 0100, change 0001, 12 Mb/s
> Oct 10 14:17:36 oenone kernel: hub 1-4:1.0: debounce: port 2: total 100ms stable 100ms status 0x100
> Oct 10 14:17:38 oenone kernel: hub 1-4:1.0: state 7 ports 7 chg 0000 evt 0004
> Oct 10 14:17:38 oenone kernel: hub 1-4:1.0: port 2, status 0101, change 0001, 12 Mb/s
> Oct 10 14:17:38 oenone kernel: hub 1-4:1.0: debounce: port 2: total 100ms stable 100ms status 0x101
> Oct 10 14:17:38 oenone kernel: usb 1-4.2: new full speed USB device using ehci_hcd and address 17

All this next stuff looks compatible with a misbehaving peripheral connected
to port 2 on this hub:

> Oct 10 14:17:38 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0in 3strikes
> Oct 10 14:17:38 oenone kernel: usb 1-4: clear tt buffer port 2, a17 ep0 t00080248
> Oct 10 14:17:38 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0in 3strikes
> Oct 10 14:17:38 oenone kernel: usb 1-4: clear tt buffer port 2, a17 ep0 t00080248
> Oct 10 14:17:38 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0in 3strikes
> Oct 10 14:17:38 oenone kernel: usb 1-4: clear tt buffer port 2, a17 ep0 t00080248
> Oct 10 14:17:38 oenone kernel: usb 1-4.2: device descriptor read/64, error -71
> Oct 10 14:17:38 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0in 3strikes
> Oct 10 14:17:38 oenone kernel: usb 1-4: clear tt buffer port 2, a17 ep0 t00080248
> Oct 10 14:17:38 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0in 3strikes
> Oct 10 14:17:38 oenone kernel: usb 1-4: clear tt buffer port 2, a17 ep0 t00080248
> Oct 10 14:17:38 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0in 3strikes
> Oct 10 14:17:38 oenone kernel: usb 1-4: clear tt buffer port 2, a17 ep0 t00080248
> Oct 10 14:17:39 oenone kernel: usb 1-4.2: device descriptor read/64, error -71
> Oct 10 14:17:39 oenone kernel: usb 1-4.2: new full speed USB device using ehci_hcd and address 18
> Oct 10 14:17:39 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0in 3strikes
> Oct 10 14:17:39 oenone kernel: usb 1-4: clear tt buffer port 2, a18 ep0 t00080248
> Oct 10 14:17:39 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0in 3strikes
> Oct 10 14:17:39 oenone kernel: usb 1-4: clear tt buffer port 2, a18 ep0 t00080248
> Oct 10 14:17:39 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0in 3strikes
> Oct 10 14:17:39 oenone kernel: usb 1-4: clear tt buffer port 2, a18 ep0 t00080248
> Oct 10 14:17:39 oenone kernel: usb 1-4.2: device descriptor read/64, error -71
> Oct 10 14:17:39 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0in 3strikes
> Oct 10 14:17:39 oenone kernel: usb 1-4: clear tt buffer port 2, a18 ep0 t00080248
> Oct 10 14:17:39 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0in 3strikes
> Oct 10 14:17:39 oenone kernel: usb 1-4: clear tt buffer port 2, a18 ep0 t00080248
> Oct 10 14:17:39 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0in 3strikes
> Oct 10 14:17:39 oenone kernel: usb 1-4: clear tt buffer port 2, a18 ep0 t00080248
> Oct 10 14:17:39 oenone kernel: usb 1-4.2: device descriptor read/64, error -71
> Oct 10 14:17:39 oenone kernel: usb 1-4.2: new full speed USB device using ehci_hcd and address 19
> Oct 10 14:17:39 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0out 3strikes
> Oct 10 14:17:39 oenone kernel: usb 1-4: clear tt buffer port 2, a19 ep0 t00080248
> Oct 10 14:17:39 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0out 3strikes
> Oct 10 14:17:39 oenone kernel: usb 1-4: clear tt buffer port 2, a19 ep0 t00080248
> Oct 10 14:17:40 oenone kernel: usb 1-4.2: device not accepting address 19, error -71
> Oct 10 14:17:40 oenone kernel: usb 1-4.2: new full speed USB device using ehci_hcd and address 20
> Oct 10 14:17:40 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0out 3strikes
> Oct 10 14:17:40 oenone kernel: usb 1-4: clear tt buffer port 2, a20 ep0 t00080248
> Oct 10 14:17:40 oenone kernel: ehci_hcd 0000:00:02.2: devpath 4.2 ep0out 3strikes
> Oct 10 14:17:40 oenone kernel: usb 1-4: clear tt buffer port 2, a20 ep0 t00080248
> Oct 10 14:17:40 oenone kernel: usb 1-4.2: device not accepting address 20, error -71
> Oct 10 14:17:40 oenone kernel: hub 1-4:1.0: state 7 ports 7 chg 0000 evt 0004
> 
> 	Regards
> 		Oliver
> 



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