RE: USB timeout during S3 suspend w/ NEC Corporation uPD720200

["Xu, Andiry" <Andiry.Xu@xxxxxxx>]

> -----Original Message-----
> From: Thilo-Alexander Ginkel [mailto:thilo@xxxxxxxxxx]
> Sent: Sunday, March 11, 2012 5:17 AM
> To: Xu, Andiry
> Cc: linux-usb@xxxxxxxxxxxxxxx; Sarah Sharp
> Subject: Re: USB timeout during S3 suspend w/ NEC Corporation uPD720200
> 
> On Wed, Mar 7, 2012 at 05:44, Andiry Xu <andiry.xu@xxxxxxx> wrote:
> > On 03/07/2012 06:42 AM, Thilo-Alexander Ginkel wrote:
> >> On Fri, Mar 2, 2012 at 21:20, Thilo-Alexander Ginkel <thilo@xxxxxxxxxx>
> wrote:
> >>> from time to time my laptop (a Lenovo ThinkPad T420s) freezes while
> >>> attempting to enter S3. From the dmesg output it seems that it is
> >>> encountering a timeout while attempting to suspend the NEC Corporation
> >>> uPD720200 USB 3.0 controller:
> >>>
> >>> xhci_hcd 0000:0d:00.0: WARN: xHC CMD_RUN timeout
> >>> suspend_common(): xhci_pci_suspend+0x0/0x40 [xhci_hcd] returns -110
> >>> sdhci-pci 0000:05:00.0: PCI INT A disabled
> >>> pci_pm_suspend(): hcd_pci_suspend+0x0/0x30 returns -110
> >
> > Please check if the patch attached helps.
> > If not, modify XHCI_MAX_HALT_USEC to some bigger number, for example,
> 50000.
> 
> Unfortunately, the problem happened again - even though your patch was
> applied and XHCI_MAX_HALT_USEC set to 50000.
> 
> I did get some new debug output [1], though (apparently, this only
> shows up after some additional timeout has elapsed, so I missed it
> earlier when rebooting too fast):
> 
> ...
> xhci_hcd 0000:0d:00.0: Poll event ring: 4308439040
> xhci_hcd 0000:0d:00.0: op reg status = 0xffffffff
> xhci_hcd 0000:0d:00.0: HW died, polling stopped.
> 

This means your host controller is dead after suspend: op reg status
reads 0xffffffff indicates the xHC is not working at all, it's in
a status like "plug out".

What's the kernel version are you using?

Thanks,
Andiry 
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