Re: Backport of "xhci: Disable D3cold for buggy TI redrivers."

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On Fri, Jun 07, 2013 at 03:04:43PM +0100, Luis Henriques wrote:
> Hi,
> 
> While working on 3.5 kernel, I came across commit
> 
> c3897aa5386faba77e5bbdf94902a1658d3a5b11 xhci: Disable D3cold for buggy TI redrivers.
> 
> which states:
> 
>     This patch should be backported to kernels as old as 3.2, that
>     contain the commit 71c731a296f1b08a3724bd1b514b64f1bda87a23 "usb: host:
>     xhci: Fix Compliance Mode on SN65LVPE502CP Hardware"
> 
> However, this commit actually makes usage of no_d3cold field in
> struct pci_dev, which doesn't exist in older kernels:
> 
> +       if (xhci_compliance_mode_recovery_timer_quirk_check())
> +               pdev->no_d3cold = true;
> 
> Could someone advise on this?  If this patch really is applicable to
> this kernel, can we get some help on the backport (at least for the
> 3.2, 3.4 and 3.5 kernels)?

If the stable kernel doesn't include support for D3 cold, you don't need
that patch.  Ying, when did D3 cold support go in?

Sarah Sharp
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