Re: soft lockup in 2.6.26-rc1+git, on Fire V100 - USB again

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On Sat, 23 Aug 2008, Meelis Roos wrote:

> > Meelis, in keeping with David's suggestion about posting the PCI 
> > writes, you ought to apply this patch along with the previous one.
> > I doubt it will make any difference, but it's worth doing anyway.
> 
> Now got it to boot with 9600 again, with both your patches applied (and 
> your earlier patch too) and it works (have not tried anything isn USB 
> port yet, the machine is remote):

> [  178.372334] usb usb1: New USB device found, idVendor=1d6b, idProduct=0001
> [  178.461654] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
> [  178.556720] usb usb1: Product: OHCI Host Controller
> [  178.620908] usb usb1: Manufacturer: Linux 2.6.27-rc3-00661-g82d63fc-dirty ohci_hcd
> [  178.720478] usb usb1: SerialNumber: 0000:00:0a.0
> [  178.782540] hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0000
> [  179.030025] hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0000
> [  179.280279] hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0000
> [  179.532264] hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0000
> [  179.798787] hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0000
> [  180.050417] hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0000
> [  180.288167] hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0000
> [  180.534724] hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0000
> [  180.840060] hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0000
> [  181.177408] hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0000
> [  181.442548] hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0000
> [  181.670547] hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0000
> [  181.751735] ps used greatest stack depth: 0 bytes left

All those hub debugging messages are normal for a system that's polling
with a broken RHSC interrupt status bit.

But what happened to the two ohci_info() calls I had you include?  At 
least one of them should show up.  Unless for some reason you have 
CONFIG_PM disabled?

And I admit, I still don't know why it was working with the old kernel 
version...

Alan Stern

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