linux-kernel - usb3.0 not recognizing hard disk.

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Date:	Sat, 31 Jul 2010 22:23:33 +0800 (SGT)
From:	Jeff Chua <jeff.chua.linux@...il.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: usb3.0 not recognizing hard disk.

I'm trying out USB3.0 and connected a hard disk enclosure with a 
known-good hard disk to an USB 3.0 express-card.

>From dmesg, it's able to recognize the card and disk, but I can't even use 
"fdisk /dev/sdb" ... what else do I need?

xhci_hcd 0000:05:00.0: enabling device (0000 -> 0002)
xhci_hcd 0000:05:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
xhci_hcd 0000:05:00.0: setting latency timer to 64
xhci_hcd 0000:05:00.0: xHCI Host Controller
xhci_hcd 0000:05:00.0: new USB bus registered, assigned bus number 3
xhci_hcd 0000:05:00.0: irq 19, io mem 0xf0000000
usb usb3: No SuperSpeed endpoint companion for config 1  interface 0
altsetting 0 ep 129: using minimum values
xHCI xhci_add_endpoint called for root hub
xHCI xhci_check_bandwidth called for root hub
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 4 ports detected
hub 3-0:1.0: unable to enumerate USB device on port 3
usb 3-1: new SuperSpeed USB device using xhci_hcd and address 2
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep

Initializing USB Mass Storage driver...
scsi7 : usb-storage 3-2:1.0
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
scsi 7:0:0:0: Direct-Access     ASMT     2105             0    PQ: 0 ANSI: 
0
sd 7:0:0:0: Attached scsi generic sg1 type 0
sd 7:0:0:0: [sdb] Attached SCSI removable disk

# here's the same disk connected to USB2.0 port showing the partition 
table and fdisk works

Initializing USB Mass Storage driver...
scsi6 : usb-storage 1-1.2:1.0
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
scsi 6:0:0:0: Direct-Access     SAMSUNG  MMDOE56G5MXP-0VB VBM1 PQ: 0 ANSI: 
0
sd 6:0:0:0: Attached scsi generic sg1 type 0
sd 6:0:0:0: [sdb] 500118192 512-byte logical blocks: (256 GB/238 GiB)
sd 6:0:0:0: [sdb] Write Protect is off
sd 6:0:0:0: [sdb] Mode Sense: 23 00 00 00
sd 6:0:0:0: [sdb] Assuming drive cache: write through
sd 6:0:0:0: [sdb] Assuming drive cache: write through
  sdb: sdb1 sdb2 sdb3 sdb4 < sdb5 sdb6 sdb7 sdb8 sdb9 sdb10 sdb11 sdb12 
sdb13 sdb14 sdb15 >
sd 6:0:0:0: [sdb] Assuming drive cache: write through
sd 6:0:0:0: [sdb] Attached SCSI disk

Thanks,
Jeff
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