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

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On Mon, 4 Apr 2011, Sarah Sharp wrote:

> On Sat, Apr 02, 2011 at 04:35:17AM -0400, CAI Qian wrote:
> > Hi Sarah,
> > 
> > After applied this patch on the top of USB3 hub changes patches in my branch (can also reproduce the original problem), the problem is still existed.
> > 
> > Freezing user space processes ... (elapsed 0.01 seconds) done.
> > Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
> > PM: Preallocating image memory... done (allocated 3924380 pages)
> > PM: Allocated 15697520 kbytes in 2.53 seconds (6204.55 MB/s)
> > hub 8-1:1.0: suspend error -16
> > pm_op(): usb_dev_freeze+0x0/0x20 returns -16
> > PM: Device 8-1 failed to freeze: error -16
> 
> So I think the 8-1 device is your roothub.

No, it can't be.  The root hub would be named usb8.  8-1 is the device 
plugged into port 1 on the root hub.

Alan Stern

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