Re: xhci: LPM issues using Western Digital harddrive

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On Fri, 28 Sep 2012, Don Zickus wrote:

> Hi Alan,
> 
> I added the following patch to my usb-next tree (commit 0220a3f0) to
> disable LPM and the driver worked fine.

That seems to be pretty clear then; the LPM stuff causes problems
either for the drive or for the host controller.  But they are odd
kinds of problems: one control transfer timed out, another stalled, and
reinitialization failed.  These don't seem like the sort of thing you
would expect from hardware that doesn't support LPM.

Alan Stern

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