3.0.4, xhci: "short transfer" and "Stalled endpoint" warnings

3.0.4, xhci: "short transfer" and "Stalled endpoint" warnings

[Harald Dunkel]

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Hi folks,

I've got a Fantec Sata to USB3 Adapter. Problem: If I insert a
disk (WD20EARS) and switch it on, then I get

[ 4382.279961] usb 3-2: new SuperSpeed USB device number 2 using xhci_hcd
[ 4382.290848] xhci_hcd 0000:04:00.0: WARN: short transfer on control ep
[ 4382.290939] xhci_hcd 0000:04:00.0: WARN: short transfer on control ep
[ 4382.291061] xhci_hcd 0000:04:00.0: WARN: short transfer on control ep
[ 4382.291151] xhci_hcd 0000:04:00.0: WARN: short transfer on control ep
[ 4382.291199] usb 3-2: New USB device found, idVendor=174c, idProduct=55aa
[ 4382.291202] usb 3-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[ 4382.291205] usb 3-2: Product: 012345678901234567890123456789012345678901234567
[ 4382.291208] usb 3-2: Manufacturer: 01234567890123456789012345678901234567890123
[ 4382.291210] usb 3-2: SerialNumber: 0123456789ABCDEF0124
[ 4382.292407] scsi7 : usb-storage 3-2:1.0
[ 4397.044179] scsi 7:0:0:0: Direct-Access     WDC WD20 EARS-00J2GB0     80.0 PQ: 0 ANSI: 5
[ 4397.044434] sd 7:0:0:0: Attached scsi generic sg7 type 0
[ 4397.045257] sd 7:0:0:0: [sdg] 3907029168 512-byte logical blocks: (2.00 TB/1.81 TiB)
[ 4397.045423] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
[ 4397.045675] sd 7:0:0:0: [sdg] Write Protect is off
[ 4397.045681] sd 7:0:0:0: [sdg] Mode Sense: 23 00 00 00
[ 4397.045814] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
[ 4397.046049] sd 7:0:0:0: [sdg] No Caching mode page present
[ 4397.046052] sd 7:0:0:0: [sdg] Assuming drive cache: write through
[ 4397.046503] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
[ 4397.046864] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
[ 4397.047102] sd 7:0:0:0: [sdg] No Caching mode page present
[ 4397.047107] sd 7:0:0:0: [sdg] Assuming drive cache: write through
[ 4397.125154]  sdg: sdg1
[ 4397.125723] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
[ 4397.126093] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
[ 4397.126345] sd 7:0:0:0: [sdg] No Caching mode page present
[ 4397.126349] sd 7:0:0:0: [sdg] Assuming drive cache: write through
[ 4397.126352] sd 7:0:0:0: [sdg] Attached SCSI disk
[ 4397.133557] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
[ 4397.133790] sd 7:0:0:0: [sdg]  Sense Key : Recovered Error [current] [descriptor]
[ 4397.133796] Descriptor sense data with sense descriptors (in hex):
[ 4397.133798]         72 01 04 1d 00 00 00 0e 09 0c 00 00 00 00 e8 00
[ 4397.133807]         00 00 00 00 00 50
[ 4397.133812] sd 7:0:0:0: [sdg]  ASC=0x4 ASCQ=0x1d
[ 4397.136338] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
[ 4397.136727] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
[ 4397.211584] xhci_hcd 0000:04:00.0: WARN: Stalled endpoint
[ 4397.211818] sd 7:0:0:0: [sdg]  Sense Key : Recovered Error [current] [descriptor]
[ 4397.211823] Descriptor sense data with sense descriptors (in hex):
[ 4397.211825]         72 01 04 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[ 4397.211845]         00 00 00 00 00 50
[ 4397.211852] sd 7:0:0:0: [sdg]  ASC=0x4 ASCQ=0x1d


This seems to be reproducible. Is this something to worry about?

Later when reading the disk there are no problems, but I didn't
dare to mount the disk read/write yet.


Any helpful comment would be highly appreciated.

Harri
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