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

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Message-ID: <CAJZ5v0gUQApODPUuHkfmHUw30XhX3U-5zYDu5JrgehzVrtyJQw@mail.gmail.com>
Date:   Mon, 11 Jan 2021 13:57:41 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Hugh Dickins <hughd@...gle.com>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Thierry Reding <treding@...dia.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Saravana Kannan <saravanak@...gle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>
Subject: Re: 5.11-rc device reordering breaks ThinkPad rmi4 suspend

Hi Hugh,

Thanks for the report!

On Mon, Jan 11, 2021 at 5:44 AM Hugh Dickins <hughd@...gle.com> wrote:
>
> 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.

Does the driver abort the suspend transition by returning an error or
does something else happen?