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SubjectRe: [ 28/52] xHCI: add cmd_ring_state
On Thu, 2012-10-04 at 14:21 -0700, Greg Kroah-Hartman wrote:
> 3.4-stable review patch. If anyone has any objections, please let me know.
> ------------------
> From: Elric Fu <>
> commit c181bc5b5d5c79b71203cd10cef97f802fb6f9c1 upstream.
> Adding cmd_ring_state for command ring. It helps to verify
> the current command ring state for controlling the command
> ring operations.
> This patch should be backported to kernels as old as 3.0. The commit

I assume this still needs backporting for 3.0, since it wasn't included
in 3.0.45-rc1.


> 7ed603ecf8b68ab81f4c83097d3063d43ec73bb8 "xhci: Add an assertion to
> check for virt_dev=0 bug." papers over the NULL pointer dereference that
> I now believe is related to a timed out Set Address command. This (and
> the four patches that follow it) contain the real fix that also allows
> VIA USB 3.0 hubs to consistently re-enumerate during the plug/unplug
> stress tests.

Ben Hutchings
You can't have everything. Where would you put it?
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