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From: Mika Westerberg <mika.westerberg@linux.intel.com>
Subject: Re: [PATCH] pinctrl: intel: add blacklist list for XPS machines
Date: Wed, 5 Oct 2016 12:32:56 +0300
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To: AceLan Kao <acelan.kao@canonical.com>
Cc: Calvin Johnson <linux.cj@gmail.com>, Heikki Krogerus <heikki.krogerus@linux.intel.com>, Linus Walleij <linus.walleij@linaro.org>, linux-gpio@vger.kernel.org

On Wed, Oct 05, 2016 at 05:23:08PM +0800, AceLan Kao wrote:
> Or maybe anyone of you can give me some hints, which pin related to
> the touchscreen which is connected on USB port.
> I can do some test to see if I can find other solution.
> The issue we encountered is that closing the lid to enter S3 and then
> open the lid to wake up, the touchscreen fails to work.
> By other ways to enter S3, pm-suspend, or click from GUI, the
> touchscreen still works after waking up.

You can start by either filing a bug in the kernel bugzilla or
alternatively send me full dmesg of the error. Also include output of
/proc/interrupts before and after suspend.

You can also try the following patch:

https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?h=x86/urgent&id=db91aa793ff984ac048e199ea1c54202543952fe

It fixes a memory corruption during suspend/resume which might be
related to the issue you are seeing.