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SubjectRe: [linux-pm] "i8042: Can't reactivate AUX port" after s2ram on 3.4-rc2
Date
On Friday, April 13, 2012, Mikko Vinni wrote:
> Bug report:
> https://bugzilla.kernel.org/show_bug.cgi?id=43099
>
> Briefly:
>
> After s2ram the touchpad on a HP dv5 laptop doesn't work anymore.
>
> dmesg contains this about the touchpad
> Apr 11 18:00:05 koni kernel: i8042: Can't write CTR while closing AUX port
> Apr 11 18:00:08 koni kernel: i8042: Can't reactivate AUX port
>
>
> Full log in bugzilla with PCI and i8042 debug turned on.
>
> Bisected to:
>
> commit 26f41062f28de65e11d3cf353e52d0be73442be1
> Author: Kay, Allen M <allen.m.kay@intel.com>
> Date: Thu Jan 26 10:25:53 2012 -0800
>
> PCI: check for pci bar restore completion and retry
>
> On some OEM systems, pci_restore_state() is called while FLR has not yet
> completed. As a result, PCI BAR register restore is not successful. This fix
> reads back the restored value and compares it with saved value and re-tries 10
> times before giving up.

Does reverting the above commit on top of the current Linus' tree fix the
problem for you?

Rafael


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