Re: [linux-pm] ehci_hcd related S3 lockup on ASUS laptops, again

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On Thu, 2012-04-12 at 02:52 +0600, Andrey Rahmatullin wrote:
> On Wed, Apr 11, 2012 at 03:12:13PM -0400, Alan Stern wrote:
> > You can try getting rid of the call to pci_prepare_to_sleep in 
> > drivers/usb/core/hcd-pci.c:hcd_pci_suspend_noirq.  This will prevent 
> > the controller from being put into D3hot and might interfere with 
> > wakeup detection.
> > 
> > I don't know how sigificant the difference is between
> > pci_disable_device and pci_disable_enabled_device.  Probably not very, 
> > since all it involves is whether or not to disable bus-mastering on the 
> > controller.
> I replaced the hcd_pci_suspend_noirq call with retval=0 and suspend/resume
> was successful.
> 

I just did the update and it was successful for me as well.

Seems there's some kind of issue with the hcd_pci_suspend_noirq() call.

Thanks!


-- Steve


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