Re: [RFT] usbcore: Bug fix: system can't suspend with USB3.0 device connected to USB3.0 hub

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----- Original Message -----
> CAI, what kernel is this based off of? It looks like a backport to
> 2.6.32?
Sarah, yes, it is based on a 2.6.32-based kernel. As I mentioned early,
this usb3 hub hibernate/resume problem can be also reproduced on your
tree's hubs-v3-rebase branch. However, it is not possible to reproduce
this on both Greg's usb tree and Linus' tree due to be marked by a
general hibernate/resume regression,
http://marc.info/?l=linux-kernel&m=130215842223224&w=2

Hence, it was a challenge to test Andiry's 5 patches due to not applied
cleanly on the top of your hubs-v3-rebase branch.
> You don't seem to have the USB 3.0 split roothub patches that went
> with
> the USB 3.0 hub support. The complete patchset is necessary for USB
> 3.0
> hubs to work, and for power management to work. I have no idea how the
> system is going to behave if you don't have the full patchset. Here's
> the link to the full patchset, if you need it:
> 
> http://marc.info/?l=linux-usb&m=130007599330834&w=2
That patchset is too big for me to apply on the top of my 2.6.32-based
kernel. Do you have any suggestion to test this on the top of
hubs-v3-rebase branch? Maybe I just need to track down the genenral
hibernate/resume regression first, and then to test this again.
> I only see one xHCI host controller roothub (device 8-1) in your lsusb
> output, but I should see two xHCI roothubs (one USB 2.0 and one USB
> 3.0
> roothub). So either the split roothub code isn't working properly, or
> you didn't take the whole patchset. I can't tell what happened from
> the
> dmesg because you didn't capture from the beginning of boot (or when
> you
> loaded the xHCI driver).
The dmesg captured from the boot was uploaded here,
http://people.redhat.com/qcai/dmesg-2

CAI Qian
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