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SubjectRe: pm_op(): usb_dev_suspend+0x0/0x10 returns -2 on USB device 8087:0020
On Thu, 25 Feb 2010, Ákos Maróy wrote:

> > By the way, I noticed above that you have xhci-hcd installed. As far
> > as I know, that driver does not yet support system suspend. You should
> > try unloading xhci-hcd before doing the suspend (both with and without
> > CONFIG_USB_DEBUG).
>
> wow, rmmod xhci - and the suspend goes through fine!
>
> what is this xhci thing anyway?

It is the driver for USB-3.0 controllers. It's relatively new and not
as mature as the USB-2.0 drivers.

I'm a little surprised that it is running on your system. Why would
you have USB-3.0 hardware?

> > These separate issues deserve to be investigated more closely. The USB
> > stack is not supposed to be that fragile. Describe your environment
> > more fully and provide the dmesg log from a kernel with
> > CONFIG_USB_DEBUG enabled showing what happens during the experiments.
>
> indeed. interestingly, xhci may be the culprit, as without xhci, the
> external DVD doesn't even register at all.
>
> loadind xhci, I get:
>
> Feb 25 17:33:50 tonkachi kernel: [ 168.203418] xhci_hcd 0000:02:00.0:
> PCI INT A -> GSI 16 (level, low) -> IRQ 16
> Feb 25 17:33:50 tonkachi kernel: [ 168.203568] xhci_hcd 0000:02:00.0:
> xHCI Host Controller
> Feb 25 17:33:50 tonkachi kernel: [ 168.203689] xhci_hcd 0000:02:00.0:
> new USB bus registered, assigned bus number 2
> Feb 25 17:33:50 tonkachi kernel: [ 168.203832] xhci_hcd 0000:02:00.0:
> irq 16, io mem 0xd4000000
> Feb 25 17:33:50 tonkachi kernel: [ 168.203875] usb usb2: config 1
> interface 0 altsetting 0 endpoint 0x81 has no SuperSpeed companion
> descriptor
> Feb 25 17:33:50 tonkachi kernel: [ 168.203912] usb usb2: New USB device
> found, idVendor=1d6b, idProduct=0002
> Feb 25 17:33:50 tonkachi kernel: [ 168.203919] usb usb2: New USB device
> strings: Mfr=3, Product=2, SerialNumber=1
> Feb 25 17:33:50 tonkachi kernel: [ 168.203925] usb usb2: Product: xHCI
> Host Controller
> Feb 25 17:33:50 tonkachi kernel: [ 168.203931] usb usb2: Manufacturer:
> Linux 2.6.32.8-usb-debug xhci_hcd
> Feb 25 17:33:50 tonkachi kernel: [ 168.203937] usb usb2: SerialNumber:
> 0000:02:00.0
> Feb 25 17:33:50 tonkachi kernel: [ 168.204089] usb usb2: configuration
> #1 chosen from 1 choice
> Feb 25 17:33:50 tonkachi kernel: [ 168.204198] hub 2-0:1.0: USB hub found
> Feb 25 17:33:50 tonkachi kernel: [ 168.204213] hub 2-0:1.0: 4 ports
> detected
>
>
> plugging in the USB DVD drive, there's a system 'freeze' for about 5
> seconds (nothing is responding, not even caps lock), then I get in syslog:
>
> Feb 25 17:34:39 tonkachi kernel: [ 217.433960] Registered led device:
> iwl-phy0::radio
> Feb 25 17:34:39 tonkachi kernel: [ 217.433990] Registered led device:
> iwl-phy0::assoc
> Feb 25 17:34:39 tonkachi kernel: [ 217.434020] Registered led device:
> iwl-phy0::RX
> Feb 25 17:34:39 tonkachi kernel: [ 217.434045] Registered led device:
> iwl-phy0::TX
> Feb 25 17:34:39 tonkachi kernel: [ 217.463366] usb 2-4: new high speed
> USB device using xhci_hcd and address 0
> Feb 25 17:34:39 tonkachi kernel: [ 217.485828] usb 2-4: New USB device
> found, idVendor=058f, idProduct=6254
> Feb 25 17:34:39 tonkachi kernel: [ 217.485834] usb 2-4: New USB device
> strings: Mfr=0, Product=0, SerialNumber=0
> Feb 25 17:34:39 tonkachi kernel: [ 217.485949] usb 2-4: configuration
> #1 chosen from 1 choice
> Feb 25 17:34:39 tonkachi kernel: [ 217.485963] usb 2-4: ep 0x81 -
> rounding interval to 2048 microframes
> Feb 25 17:34:39 tonkachi kernel: [ 217.487002] hub 2-4:1.0: USB hub found
> Feb 25 17:34:39 tonkachi kernel: [ 217.487502] xhci_hcd 0000:02:00.0:
> WARN: short transfer on control ep
> Feb 25 17:34:39 tonkachi kernel: [ 217.487533] hub 2-4:1.0: 3 ports
> detected
> Feb 25 17:34:40 tonkachi kernel: [ 217.782947] usb 2-4.1: new high
> speed USB device using xhci_hcd and address 0
> Feb 25 17:34:40 tonkachi kernel: [ 217.806372] xhci_hcd 0000:02:00.0:
> WARN: short transfer on control ep
> Feb 25 17:34:40 tonkachi kernel: [ 217.807238] xhci_hcd 0000:02:00.0:
> WARN: short transfer on control ep
> Feb 25 17:34:40 tonkachi kernel: [ 217.808106] xhci_hcd 0000:02:00.0:
> WARN: short transfer on control ep
> Feb 25 17:34:40 tonkachi kernel: [ 217.808996] xhci_hcd 0000:02:00.0:
> WARN: short transfer on control ep
> Feb 25 17:34:40 tonkachi kernel: [ 217.809420] usb 2-4.1: New USB
> device found, idVendor=152d, idProduct=2339
> Feb 25 17:34:40 tonkachi kernel: [ 217.809425] usb 2-4.1: New USB
> device strings: Mfr=1, Product=2, SerialNumber=5
> Feb 25 17:34:40 tonkachi kernel: [ 217.809430] usb 2-4.1: Product: USB
> to ATA/ATAPI Bridge
> Feb 25 17:34:40 tonkachi kernel: [ 217.809434] usb 2-4.1: Manufacturer:
> JMicron
> Feb 25 17:34:40 tonkachi kernel: [ 217.809437] usb 2-4.1: SerialNumber:
> 6A1713351FFF
> Feb 25 17:34:40 tonkachi kernel: [ 217.809574] usb 2-4.1: configuration
> #1 chosen from 1 choice
> Feb 25 17:34:40 tonkachi kernel: [ 217.811213] xhci_hcd 0000:02:00.0:
> WARN: short transfer on control ep
> Feb 25 17:34:40 tonkachi kernel: [ 217.812078] xhci_hcd 0000:02:00.0:
> WARN: short transfer on control ep
> Feb 25 17:34:40 tonkachi kernel: [ 217.840485] Initializing USB Mass
> Storage driver...
> Feb 25 17:34:40 tonkachi kernel: [ 217.840664] scsi6 : SCSI emulation
> for USB Mass Storage devices
> Feb 25 17:34:40 tonkachi kernel: [ 217.840795] usbcore: registered new
> interface driver usb-storage
> Feb 25 17:34:40 tonkachi kernel: [ 217.840800] USB Mass Storage support
> registered.
> Feb 25 17:34:45 tonkachi kernel: [ 222.833493] scsi 6:0:0:0: CD-ROM
> hp DVDRAM GT20L DC05 PQ: 0 ANSI: 0
> Feb 25 17:34:45 tonkachi kernel: [ 222.846361] xhci_hcd 0000:02:00.0:
> WARN: Stalled endpoint
> Feb 25 17:34:45 tonkachi kernel: [ 222.847589] sr0: scsi3-mmc drive:
> 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray
> Feb 25 17:34:45 tonkachi kernel: [ 222.847597] Uniform CD-ROM driver
> Revision: 3.20
> Feb 25 17:34:45 tonkachi kernel: [ 222.849281] sr 6:0:0:0: Attached
> scsi generic sg2 type 5
> Feb 25 17:34:45 tonkachi kernel: [ 222.958589] xhci_hcd 0000:02:00.0:
> WARN: Stalled endpoint
>
>
> now, I unplug the USB DVD drive:
>
> Feb 25 17:35:38 tonkachi kernel: [ 276.374282] xhci_hcd 0000:02:00.0:
> WARN: transfer error on endpoint
> Feb 25 17:35:39 tonkachi kernel: [ 276.728151] xhci_hcd 0000:02:00.0:
> WARN: transfer error on endpoint
> Feb 25 17:35:39 tonkachi kernel: [ 276.728819] xhci_hcd 0000:02:00.0:
> WARN: transfer error on endpoint
>
>
> I plug it back in, with a DVD in the drive:
>
> Feb 25 17:41:21 tonkachi kernel: [ 618.701586] Registered led device:
> iwl-phy0::radio
> Feb 25 17:41:21 tonkachi kernel: [ 618.701619] Registered led device:
> iwl-phy0::assoc
> Feb 25 17:41:21 tonkachi kernel: [ 618.701649] Registered led device:
> iwl-phy0::RX
> Feb 25 17:41:21 tonkachi kernel: [ 618.701674] Registered led device:
> iwl-phy0::TX
> Feb 25 17:41:21 tonkachi kernel: [ 618.719536] usb 2-3: new high speed
> USB device using xhci_hcd and address 0
> Feb 25 17:41:21 tonkachi kernel: [ 618.742028] usb 2-3: New USB device
> found, idVendor=058f, idProduct=6254
> Feb 25 17:41:21 tonkachi kernel: [ 618.742034] usb 2-3: New USB device
> strings: Mfr=0, Product=0, SerialNumber=0
> Feb 25 17:41:21 tonkachi kernel: [ 618.742155] usb 2-3: configuration
> #1 chosen from 1 choice
> Feb 25 17:41:21 tonkachi kernel: [ 618.742168] usb 2-3: ep 0x81 -
> rounding interval to 2048 microframes
> Feb 25 17:41:21 tonkachi kernel: [ 618.743316] hub 2-3:1.0: USB hub found
> Feb 25 17:41:21 tonkachi kernel: [ 618.743794] xhci_hcd 0000:02:00.0:
> WARN: short transfer on control ep
> Feb 25 17:41:21 tonkachi kernel: [ 618.743830] hub 2-3:1.0: 3 ports
> detected
> Feb 25 17:41:21 tonkachi kernel: [ 619.045944] usb 2-3.1: new high
> speed USB device using xhci_hcd and address 0
> Feb 25 17:41:21 tonkachi kernel: [ 619.069424] xhci_hcd 0000:02:00.0:
> WARN: short transfer on control ep
> Feb 25 17:41:21 tonkachi kernel: [ 619.070295] xhci_hcd 0000:02:00.0:
> WARN: short transfer on control ep
> Feb 25 17:41:21 tonkachi kernel: [ 619.071173] xhci_hcd 0000:02:00.0:
> WARN: short transfer on control ep
> Feb 25 17:41:21 tonkachi kernel: [ 619.072042] xhci_hcd 0000:02:00.0:
> WARN: short transfer on control ep
> Feb 25 17:41:21 tonkachi kernel: [ 619.072398] usb 2-3.1: New USB
> device found, idVendor=152d, idProduct=2339
> Feb 25 17:41:21 tonkachi kernel: [ 619.072404] usb 2-3.1: New USB
> device strings: Mfr=1, Product=2, SerialNumber=5
> Feb 25 17:41:21 tonkachi kernel: [ 619.072408] usb 2-3.1: Product: USB
> to ATA/ATAPI Bridge
> Feb 25 17:41:21 tonkachi kernel: [ 619.072412] usb 2-3.1: Manufacturer:
> JMicron
> Feb 25 17:41:21 tonkachi kernel: [ 619.072416] usb 2-3.1: SerialNumber:
> 6A1713351FFF
> Feb 25 17:41:21 tonkachi kernel: [ 619.072530] usb 2-3.1: configuration
> #1 chosen from 1 choice
> Feb 25 17:41:21 tonkachi kernel: [ 619.074124] xhci_hcd 0000:02:00.0:
> WARN: short transfer on control ep
> Feb 25 17:41:21 tonkachi kernel: [ 619.074999] xhci_hcd 0000:02:00.0:
> WARN: short transfer on control ep
> Feb 25 17:41:21 tonkachi kernel: [ 619.075559] scsi7 : SCSI emulation
> for USB Mass Storage devices
>
>
>
> Feb 25 17:41:26 tonkachi kernel: [ 624.073472] scsi 7:0:0:0: CD-ROM
> hp DVDRAM GT20L DC05 PQ: 0 ANSI: 0
> Feb 25 17:41:26 tonkachi kernel: [ 624.086041] xhci_hcd 0000:02:00.0:
> WARN: Stalled endpoint
> Feb 25 17:41:26 tonkachi kernel: [ 624.087393] sr0: scsi3-mmc drive:
> 62x/62x writer dvd-ram cd/rw xa/form2 cdda tray
> Feb 25 17:41:26 tonkachi kernel: [ 624.088377] sr 7:0:0:0: Attached
> scsi generic sg2 type 5
> Feb 25 17:41:26 tonkachi kernel: [ 624.118679] xhci_hcd 0000:02:00.0:
> WARN: Stalled endpoint
> Feb 25 17:41:29 tonkachi kernel: [ 626.883451] xhci_hcd 0000:02:00.0:
> WARN: Stalled endpoint
> Feb 25 17:41:29 tonkachi kernel: [ 626.915739] xhci_hcd 0000:02:00.0:
> WARN: Stalled endpoint
> Feb 25 17:41:29 tonkachi kernel: [ 627.147000] xhci_hcd 0000:02:00.0:
> WARN: Stalled endpoint
> Feb 25 17:41:29 tonkachi kernel: [ 627.270741] xhci_hcd 0000:02:00.0:
> WARN: Stalled endpoint
>
>
> unplug:
>
> Feb 25 17:42:05 tonkachi kernel: [ 663.327552] xhci_hcd 0000:02:00.0:
> WARN: transfer error on endpoint
> Feb 25 17:42:06 tonkachi kernel: [ 663.364546] xhci_hcd 0000:02:00.0:
> WARN: transfer error on endpoint
> Feb 25 17:42:06 tonkachi kernel: [ 663.365228] xhci_hcd 0000:02:00.0:
> WARN: transfer error on endpoint
> Feb 25 17:42:10 tonkachi kernel: [ 667.360714] VFS: busy inodes on
> changed media or resized disk sr0
> Feb 25 17:42:10 tonkachi kernel: [ 667.360956] VFS: busy inodes on
> changed media or resized disk sr0
> Feb 25 17:42:10 tonkachi kernel: [ 667.361101] VFS: busy inodes on
> changed media or resized disk sr0
> Feb 25 17:42:10 tonkachi kernel: [ 667.362264] VFS: busy inodes on
> changed media or resized disk sr0
> Feb 25 17:42:10 tonkachi kernel: [ 667.363730] VFS: busy inodes on
> changed media or resized disk sr0
> Feb 25 17:42:10 tonkachi kernel: [ 667.377669] VFS: busy inodes on
> changed media or resized disk sr0
> Feb 25 17:42:10 tonkachi kernel: [ 667.377910] VFS: busy inodes on
> changed media or resized disk sr0
> Feb 25 17:42:10 tonkachi kernel: [ 667.378158] VFS: busy inodes on
> changed media or resized disk sr0
>
>
>
> plug back in:
>
> Feb 25 17:42:50 tonkachi kernel: [ 707.759089] Registered led device:
> iwl-phy0::radio
> Feb 25 17:42:50 tonkachi kernel: [ 707.759179] Registered led device:
> iwl-phy0::assoc
> Feb 25 17:42:50 tonkachi kernel: [ 707.759412] Registered led device:
> iwl-phy0::RX
> Feb 25 17:42:50 tonkachi kernel: [ 707.759572] Registered led device:
> iwl-phy0::TX
>
>
>
> but the disk does not register anymore :(

This is something Sarah should look into. She's the main developer
behind xhci-hcd.

Alan Stern

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