On Wed, Jul 24, 2013 at 11:03 PM, Alan Stern <st...@rowland.harvard.edu> wrote:
> On Wed, 24 Jul 2013, Philipp Dreimann wrote:
>
>> Hello,
>>
>> one of my external HDDs does not work using 3.11-rc2. The drive works
>> using 3.10, and 3.9, except for a suspend/resume issue described here:
>> https://bugzilla.redhat.com/show_bug.cgi?id=984189 .
>>
>> dmesg snipped:
>> [  119.334908] usb 4-1: new SuperSpeed USB device number 2 using xhci_hcd
>> [  119.347397] usb 4-1: Parent hub missing LPM exit latency info.
>> Power management will be impacted.
>> [  119.350614] usb 4-1: New USB device found, idVendor=054c, idProduct=c005
>> [  119.350620] usb 4-1: New USB device strings: Mfr=1, Product=2, 
>> SerialNumber=3
>> [  119.350624] usb 4-1: Product: USB 3.0 SATA Bridge
>> [  119.350627] usb 4-1: Manufacturer: VIA Technologies Inc.
>> [  119.350630] usb 4-1: SerialNumber: l刁A柜鬨xffffffc2\xffffff80籁7鮘d
>> [  119.377782] usb-storage 4-1:1.0: USB Mass Storage device detected
>> [  119.377847] scsi6 : usb-storage 4-1:1.0
>> [  119.377900] usbcore: registered new interface driver usb-storage
>> [  129.844989] scsi 6:0:0:0: Direct-Access     Hitachi  HDS5C3030BLE
>>   MZ6O PQ: 0 ANSI: 6
>> [  129.845465] sd 6:0:0:0: Attached scsi generic sg1 type 0
>> [  129.863425] sd 6:0:0:0: [sdb] 732566646 4096-byte logical blocks:
>> (3.00 TB/2.72 TiB)
>> [  129.871203] sd 6:0:0:0: [sdb] Write Protect is off
>> [  129.871209] sd 6:0:0:0: [sdb] Mode Sense: 2f 00 00 00
>> [  129.879196] sd 6:0:0:0: [sdb] Write cache: disabled, read cache:
>> enabled, doesn't support DPO or FUA
>> [  160.787920] usb 4-1: reset SuperSpeed USB device number 2 using xhci_hcd
>> [  160.800582] usb 4-1: Parent hub missing LPM exit latency info.
>> Power management will be impacted.
>> [  160.801795] usb 4-1: device firmware changed
>> [  160.801857] usb 4-1: USB disconnect, device number 2
>> [  160.801938] sd 6:0:0:0: Device offlined - not ready after error recovery
>> [  160.805190] sd 6:0:0:0: [sdb] READ CAPACITY failed
>> [  160.805194] sd 6:0:0:0: [sdb]
>> [  160.805195] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
>> [  160.805197] sd 6:0:0:0: [sdb] Sense not available.
>> [  160.805218] sd 6:0:0:0: [sdb] Asking for cache data failed
>> [  160.805220] sd 6:0:0:0: [sdb] Assuming drive cache: write through
>> [  160.805233] sdb: detected capacity change from 3000592982016 to 0
>> [  160.805353] sd 6:0:0:0: [sdb] READ CAPACITY failed
>> [  160.805357] sd 6:0:0:0: [sdb]
>> [  160.805359] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
>> [  160.805361] sd 6:0:0:0: [sdb] Sense not available.
>> [  160.805383] sd 6:0:0:0: [sdb] No Caching mode page present
>> [  160.805386] sd 6:0:0:0: [sdb] Assuming drive cache: write through
>> [  160.805397] sd 6:0:0:0: [sdb] Attached SCSI disk
>> [  160.806605] xhci_hcd 0000:0e:00.0: xHCI xhci_drop_endpoint called
>> with disabled ep ffff880212315e80
>> [  160.806609] xhci_hcd 0000:0e:00.0: xHCI xhci_drop_endpoint called
>> with disabled ep ffff880212315ec0
>>
>> kernel log, lsusb and usbmon are attached. I tried usb2 and 3 ports,
>> both have the same issue with this drive. Other drives work.
>
> The problem is caused by some program on your computer sending a
> command to the drive that it can't handle (SCSI INQUIRY command with a
> transfer length of 512).  It is not a kernel problem.

Thanks, I can reproduce the issue using kernel 3.9.9 and
$ sg_inq -l 512 /dev/sdb

I am guessing that this is the reason for the suspend/resume issues
with 3.9 and 3.10 as well. A look at the program's code might reveal
why this was not triggered on 3.9 and 3.10 as bad as on 3.11...
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