linux-kernel - Re: rmi4 defunct on T460p [was: [git pull] Input updates for v4.15-rc8]

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Date:   Thu, 1 Mar 2018 14:22:10 +0100
From:   Marc-André Lureau <marcandre.lureau@...il.com>
To:     Jiri Slaby <jslaby@...e.cz>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        open list <linux-kernel@...r.kernel.org>,
        linux-input@...r.kernel.org
Subject: Re: rmi4 defunct on T460p [was: [git pull] Input updates for v4.15-rc8]

Hi

On Tue, Feb 13, 2018 at 9:22 AM, Jiri Slaby <jslaby@...e.cz> wrote:
> On 02/09/2018, 02:39 AM, Dmitry Torokhov wrote:
>> On Thu, Feb 08, 2018 at 11:04:22AM +0100, Jiri Slaby wrote:
>>> On 01/19/2018, 06:42 PM, Dmitry Torokhov wrote:
>>>> Please pull from:
>>>>
>>>>     git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git for-linus
>>>>
>>>> to receive updates for the input subsystem. You will get:
>>>>
>>> ...
>>>> - touchpad on Lenovo T640p is switched over to SMbus/RMI
>>> ...
>>>
>>>> 王振杰 (1):
>>>>       Input: synaptics - Lenovo Thinkpad T460p devices should use RMI
>>>
>>> Hi,
>>>
>>> one of openSUSE users with T460p reports that the touchpad is defunct
>>> after resume in 4.15. psmouse.synaptics_intertouch=0 works around the
>>> problem.
>>>
>>> The problem is:
>>>  kernel: rmi4_smbus 8-002c: failed to get SMBus version number!
>>>  kernel: rmi4_physical rmi4-00: rmi_driver_reset_handler: Failed to read
>>> current IRQ mask.
>>>  kernel: rmi4_f01 rmi4-00.fn01: Failed to restore normal operation: -16.
>>>  kernel: rmi4_f01 rmi4-00.fn01: Resume failed with code -16.
>>>  kernel: rmi4_physical rmi4-00: Failed to suspend functions: -16
>>>  kernel: rmi4_smbus 8-002c: Failed to resume device: -16
>>>  kernel: rmi4_f03 rmi4-00.fn03: rmi_f03_pt_write: Failed to write to F03
>>> TX register (-16).
>>>
>>> The downstream bug is at:
>>> https://bugzilla.suse.com/show_bug.cgi?id=1079862
>>>
>>> Any ideas?
>>
>> Hmm, maybe the seuence between psmouse and rmi/smbus is not quite right
>> on resume on that box. Can you ask the reporter to:
>>
>> echo 1 > /sys/power/pm_print_times
>> suspend/resume
>
> He uploaded it here:
> https://bugzilla.suse.com/attachment.cgi?id=759933
>

Same problem (with f27 and upstream kernel), is there anything else we
can do to help? Should we open a bug on http://bugzilla.kernel.org ?

thanks

-- 
Marc-André Lureau