linux-kernel - 5.11-rc device reordering breaks ThinkPad rmi4 suspend

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Date:   Sun, 10 Jan 2021 20:44:13 -0800 (PST)
From:   Hugh Dickins <hughd@...gle.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
cc:     Thierry Reding <treding@...dia.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Saravana Kannan <saravanak@...gle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org
Subject: 5.11-rc device reordering breaks ThinkPad rmi4 suspend

Hi Rafael,

Synaptics RMI4 SMBus touchpad on ThinkPad X1 Carbon (5th generation)
fails to suspend when running 5.11-rc kernels: bisected to 
5b6164d3465f ("driver core: Reorder devices on successful probe"),
and reverting that fixes it.  dmesg.xz attached, but go ahead and ask
me to switch on a debug option to extract further info if that may help.

Thanks,
Hugh
Download attachment "dmesg.xz" of type "APPLICATION/x-xz" (14460 bytes)