Re: [Bug 1373] uhci-hcd fails after software suspend

Re: [Bug 1373] uhci-hcd fails after software suspend

[Alan Stern]

[Can't reply to you via bugzilla because you're not registered on the CC: 
list for this bug.]

> ------- Additional Comments From fabrice@bellet.info  2004-03-04 03:46 -------
> This patch resolved the part of the problem warning me about "host controller
> halted, very bad!" in my logs. But the external USB mouse still doesn't work
> after resume from ACPI suspend (echo 3 > /proc/acpi/sleep). The file
> /proc/driver/uhci/0000:00:1d.1 contains these differences :
> 
> before suspend :
> 
>   usbstat   =     0000   

That's a good value.

> and after suspend :
>   usbstat   =     0001   USBINT 

USBINT means that the USB controller is trying to send an interrupt 
request but the system isn't accepting it.

> Then I unplug the mouse :
> 
>   usbstat   =     0021   HCHalted USBINT 
>   stat2     =     0080  
> 
> And I replug it :
> 
>   usbstat   =     0025   HCHalted ResumeDetect USBINT 
>   stat2     =     0185   LowSpeed Enabled Connected

Same thing here.  This may be an interrupt routing problem, probably 
something to do with ACPI support.

> The machine is a thinkpad T40, running Fedora kernel-2.6.3-1.118 modified with
> your patch.

Alan Stern



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Re: [Bug 1373] uhci-hcd fails after software suspend

[Fabrice Bellet]

On Thu, Mar 04, 2004 at 11:06:23AM -0500, Alan Stern wrote:
> [Can't reply to you via bugzilla because you're not registered on the CC: 
> list for this bug.]
> 
> > ------- Additional Comments From fabrice@bellet.info  2004-03-04 03:46 -------
> > This patch resolved the part of the problem warning me about "host controller
> > halted, very bad!" in my logs. But the external USB mouse still doesn't work
> > after resume from ACPI suspend (echo 3 > /proc/acpi/sleep). The file
> > /proc/driver/uhci/0000:00:1d.1 contains these differences :
> > 
> > before suspend :
> > 
> >   usbstat   =     0000   
> 
> That's a good value.
> 
> > and after suspend :
> >   usbstat   =     0001   USBINT 
> 
> USBINT means that the USB controller is trying to send an interrupt 
> request but the system isn't accepting it.
> 
> > Then I unplug the mouse :
> > 
> >   usbstat   =     0021   HCHalted USBINT 
> >   stat2     =     0080  
> > 
> > And I replug it :
> > 
> >   usbstat   =     0025   HCHalted ResumeDetect USBINT 
> >   stat2     =     0185   LowSpeed Enabled Connected
> 
> Same thing here.  This may be an interrupt routing problem, probably 
> something to do with ACPI support.

okay.
I also booted with pci=noacpi, just in case, and the same bug occurs.

-- 
fabrice


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