On Friday, 22 September 2006 17:18, Alan Stern wrote:
> On Fri, 22 Sep 2006, Rafael J. Wysocki wrote:
>
> > I have tested 2.6.18-rc6-mm2 with your patch applied (it is called
> > 2.6.18-rc6
> > in the attached dmesg outputs, but that's because I have a "customized"
> > 2.6.18-rc6-mm2 installed and I didn't want to replace it).
> >
> > I have tested both with and without CONFIG_USB_SUSPEND set. In either case
> > I booted the system without my USB mouse. Then, I plugged the mouse in
> > and checked if it worked. Next, I suspended and resumed the system twice
> > checking if the mouse worked after each resume, without unplugging it.
> > Finally, after the second resume I unplugged and replugged the mouse.
> >
> > The results are the following:
> >
> > 1) The kernel compiled without CONFIG_USB_SUSPEND works just fine, suspends
> > and resumes correctly, and the mouse always works (ie. is correctly detected
> > every time).
>
> Good.
>
> > 2) The kernel compiled with CONFIG_USB_SUSPEND set doesn't detect the mouse
> > plugged in after a fresh boot. However, if the mouse is connected to a USB
> > port during an entire suspend/resume cycle, it works after the resume, but
> > when it's unplugged after the resume and replugged, the kernel fails to
> > detect
> > it.
> >
> > The outputs of dmesg for each case are attached.
>
> This helped. I think I figured out the problem. Below is a new version
> of the patch I asked you to try. It's the same as before except that I
> removed a bunch of extra code. Some weird interactions between the driver
> and usbcore prevented status-change interrupts from being enabled; hence
> the connect-change events just get lost.
>
> Anyway, this should solve the problem.
It does. Now the kernel with CONFIG_USB_SUSPEND set works fine.
Thanks,
Rafael
--
You never change things by fighting the existing reality.
R. Buckminster Fuller
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