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Description of problem:
Asynchronous detach and reattach test for USB 3.0 device to ExpressCard USB 3.0 host port always failed. The system could not probe the USB 3.0 device out. But if I detach and reattach the ExpressCard with the USB 3.0 device on, test could pass.

Version-Release number of selected component (if applicable):
# uname -a
Linux wlan-5-235.nay.redhat.com 2.6.32-128.el6.x86_64 #1 SMP Mon Mar 28 21:55:33 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux
# more /etc/redhat-release
Red Hat Enterprise Linux Workstation release 6.0 (Santiago)

How reproducible:
Always

Steps to Reproduce:
1.attach the ExpressCard USB 3.0 to the USB 2.0 port
2.attach the USB 3.0 device to the ExpressCard USB 3.0 host port
3.detach and reattach the USB 3.0 device
4.# fdisk -l
  
Actual results:
Fail

Expected results:
Pass

(In reply to comment #0)
> Steps to Reproduce:
> 1.attach the ExpressCard USB 3.0 to the USB 2.0 port
Do you mean to an ExpressCard slot in the laptop?

Since RHEL 6.1 External Beta has begun, and this bug remains
unresolved, it has been rejected as it is not proposed as
exception or blocker.

Red Hat invites you to ask your support representative to
propose this request, if appropriate and relevant, in the
next release of Red Hat Enterprise Linux.

> Steps to Reproduce:
> 1.attach the ExpressCard USB 3.0 to the USB 2.0 port
> 2.attach the USB 3.0 device to the ExpressCard USB 3.0 host port
> 3.detach and reattach the USB 3.0 device
> 4.# fdisk -l
> 

Hi,

I am confused by your steps.  Can you re-explain 1 to me?  I don't think ExpressCards plug into USB 2.0 ports (they normally plug into a pci-e bus).

I just want to make sure I understand how you were able to make this fail.

Cheers,
Don

This is fixed in recent usb-2.6 tree.