Public bug reported:

System environment:

chipset: ivybridge mobile
arch: x86_64
distro: ubuntu 11.10 Oneiric
kernel: 3.0.0-13.22

SRU justification:

Impact: No new kernel message after an USB 3.0 stick is plugged in and
no new device found.

Fix: Cherry-pick patch 79c3dd8150 from upstream solve this issue, USB
3.0 stick is detected and able to be mounted, read and written.

Testcase: Boot from patched kernel, every time when USB 3.0 stick is
plugged in, xhci host detects new device.

** Affects: linux (Ubuntu)
     Importance: High
     Assignee: Ike Panhc (ikepanhc)
         Status: In Progress


** Tags: blocks-hwcert-enablement

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https://bugs.launchpad.net/bugs/897506

Title:
  USB3.0 host can't detect USB3.0 device

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