linux-kernel - Re: [PATCH 4.19 014/110] usb: xhci: Prevent bus suspend if a port connect change or polling state is detected

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Date:   Wed, 12 Dec 2018 23:53:34 +0100
From:   Thomas Zeitlhofer <thomas.zeitlhofer@...it.at>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Mathias Nyman <mathias.nyman@...ux.intel.com>
Subject: Re: [PATCH 4.19 014/110] usb: xhci: Prevent bus suspend if a port
 connect change or polling state is detected

Hello,

On Thu, Nov 29, 2018 at 03:11:45PM +0100, Greg Kroah-Hartman wrote:
> 4.19-stable review patch.  If anyone has any objections, please let me
> know.
> 
> ------------------
> 
> From: Mathias Nyman <mathias.nyman@...ux.intel.com>
> 
> commit 2f31a67f01a8beb22cae754c53522cb61a005750 upstream.
[...]

on a current Thinkpad X1 Yoga, this breaks resume from hibernate such
that opening the lid has (in the regular use case, see below) no effect
any more: 

The system is configured to hibernate when the lid is closed. So, the
expected behavior, which is restored by reverting this patch, is:

	close lid => system hibernates
	open lid => system resumes

With this patch, the following two cases are observed:

	1)
		close lid => system hibernates
		open lid => system stays off
		press power button => system boots and resumes

	2)
		# systemctl hibernate => system hibernates
		close lid 
		open lid => system resumes

Regards,

Thomas