Re: [Pull Request] xHCI bug fixes for 3.12 (Link PM and misc)

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On Mon, Oct 14, 2013 at 05:24:10PM -0700, Sarah Sharp wrote:
> The following changes since commit f4c19b8e165cff1a6607c21f8809441d61cab7ec:
> 
>   USB: serial: option: add support for Inovia SEW858 device (2013-10-11 16:17:51 -0700)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci.git tags/for-usb-linus-2013-10-14
> 
> for you to fetch changes up to 0ef7a36cb604c65ca1c84d3dd9a9363498ed028a:
> 
>   xhci: correct the usage of USB_CTRL_SET_TIMEOUT (2013-10-14 17:12:10 -0700)
> 
> ----------------------------------------------------------------
> xHCI bug fixes for 3.12 (Link PM and misc)
> 
> Hi Greg,
> 
> I hope you're recovered from your trip. :)

Thanks, just in time to leave again in 4 days...

> Here's five patches for 3.12.
> 
> The first four patches address issues with USB 2.0 Link PM that were
> causing distros to report that attaching a USB 3.0 device to a USB 2.0
> port makes the device not enumerate on Intel Haswell ULT systems with USB
> 2.0 hardware-enabled Link PM.  This issue has been reproduced under both
> Ubuntu and ChromeOS.  The patches are marked for stable.
> 
> The last patch is a simple fix to use jiffies instead of msec on a
> completion timeout.  The issue that caused the timeout to expire was fixed
> in commit ec7e43e2d98173483866fe2e4e690143626b659c "xhci: Ensure a command
> structure points to the correct trb on the command ring".  The driver
> wouldn't normally hit this timeout if the host and driver were functioning
> correctly, and I don't have any reports of other systems that hit this
> timeout.  This makes it low-priority, so I'm not marking it for stable.

All of these are for issues that do not look like "regressions" to me,
but rather, "long-standing" bugs.  While I'm all about fixing bugs and
problems, none of these seem like urgent fixes for things that have been
recently broken.

So I'd like to take these for 3.13-rc1, and if they are fixes, take them
into the 3.12-stable tree (and older ones) when they hit Linus's tree
then.

I can take these as patches for my usb-next branch by hand if you want,
or I can take a new pull request for that branch.

greg k-h
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