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Date: Mon, 14 Feb 2022 09:57:41 +0100
From: Hans de Goede <hdegoede@...hat.com>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>,
Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc: Hugh Dickins <hughd@...gle.com>, Rajat Jain <rajatja@...gle.com>,
Wolfram Sang <wsa@...nel.org>,
Derek Basehore <dbasehore@...omium.org>,
Thorsten Leemhuis <regressions@...mhuis.info>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
linux-i2c <linux-i2c@...r.kernel.org>,
"loic.poulain@...aro.org" <loic.poulain@...aro.org>,
Andrew Duggan <aduggan@...aptics.com>,
vincent.huang@...synaptics.com, cheiny@...aptics.com,
"Rafael J. Wysocki" <rafael@...nel.org>,
linux-input <linux-input@...r.kernel.org>
Subject: Re: 5.17-rc regression: rmi4 clients cannot deal with asynchronous
suspend? (was: X1 Carbon touchpad not resumed)
Hi All,
On 2/14/22 03:31, Dmitry Torokhov wrote:
> Hi Hugh, Jarkko,
>
> On Tue, Feb 08, 2022 at 04:57:53PM +0200, Jarkko Nikula wrote:
>> Hi
>>
>> On 2/8/22 04:50, Hugh Dickins wrote:
>>> On Mon, 7 Feb 2022, Dmitry Torokhov wrote:
>>>> On Mon, Feb 07, 2022 at 01:41:36PM -0800, Rajat Jain wrote:
>>>>>>>> Bisection led to 172d931910e1db800f4e71e8ed92281b6f8c6ee2
>>>>>>>> ("i2c: enable async suspend/resume on i2c client devices")
>>>>>>>> and reverting that fixes it for me.
>>>>>>>
>>>>>>> Thank you for the report plus bisection and sorry for the regression!
>>>>>>
>>>>>> +1, Thanks for the bisection, and apologies for the inconveniences.
>>>>>>
>>>>>> The problem here seems to be that for some reason, some devices (all
>>>>>> connected to rmi4 adapter) failed to resume, but only when
>>>>>> asynchronous suspend is enabled (by 172d931910e1):
>>>>>>
>>>>>> [ 79.221064] rmi4_smbus 6-002c: failed to get SMBus version number!
>>>>>> [ 79.265074] rmi4_physical rmi4-00: rmi_driver_reset_handler: Failed
>>>>>> to read current IRQ mask.
>>>>>> [ 79.308330] rmi4_f01 rmi4-00.fn01: Failed to restore normal operation: -6.
>>>>>> [ 79.308335] rmi4_f01 rmi4-00.fn01: Resume failed with code -6.
>>>>>> [ 79.308339] rmi4_physical rmi4-00: Failed to suspend functions: -6
>>>>>> [ 79.308342] rmi4_smbus 6-002c: Failed to resume device: -6
>>>>>> [ 79.351967] rmi4_physical rmi4-00: Failed to read irqs, code=-6
>>>>>>
>>
>> v5.17-rc3 on Lenovo ThinkPad X1 Carbon 8th don't even suspend due the same
>> commit 172d931910e1. Sadly I tested the original patch on other machine(s)
>> but not on this one with rmi4 :-(
>>
>> [ 39.957293] PM: suspend entry (s2idle)
>> [ 40.938666] Filesystems sync: 0.980 seconds
>> [ 40.942751] Freezing user space processes ... (elapsed 0.001 seconds)
>> done.
>> [ 40.945511] OOM killer disabled.
>> [ 40.946111] Freezing remaining freezable tasks ... (elapsed 0.001
>> seconds) done.
>> [ 40.948590] printk: Suspending console(s) (use no_console_suspend to
>> debug)
>> [ 40.993123] i801_smbus 0000:00:1f.4: No response
>> [ 40.993218] rmi4_f01 rmi4-00.fn01: Failed to write sleep mode: -6.
>> [ 40.993232] rmi4_f01 rmi4-00.fn01: Suspend failed with code -6.
>> [ 40.993241] rmi4_physical rmi4-00: Failed to suspend functions: -6
>> [ 40.993404] rmi4_smbus 1-002c: Failed to suspend device: -6
>> [ 40.993414] PM: dpm_run_callback(): rmi_smb_suspend+0x0/0x30 [rmi_smbus]
>> returns -6
>> [ 40.993438] rmi4_smbus 1-002c: PM: failed to suspend async: error -6
>> [ 41.014198] PM: Some devices failed to suspend, or early wake event
>> detected
>> [ 41.021544] i801_smbus 0000:00:1f.4: No response
>> [ 41.021612] rmi4_f03 rmi4-00.fn03: rmi_f03_pt_write: Failed to write to
>> F03 TX register (-6).
>> [ 41.022189] i801_smbus 0000:00:1f.4: No response
>> [ 41.022230] rmi4_f03 rmi4-00.fn03: rmi_f03_pt_write: Failed to write to
>> F03 TX register (-6).
>> [ 41.023480] i801_smbus 0000:00:1f.4: No response
>> [ 41.023542] rmi4_physical rmi4-00: rmi_driver_clear_irq_bits: Failed to
>> change enabled interrupts!
>> [ 41.033850] i801_smbus 0000:00:1f.4: No response
>> [ 41.034006] OOM killer enabled.
>> [ 41.035449] i801_smbus 0000:00:1f.4: No response
>> [ 41.035722] Restarting tasks ...
>> [ 41.036705] rmi4_physical rmi4-00: rmi_driver_set_irq_bits: Failed to
>> change enabled interrupts!
>> [ 41.038367] done.
>> [ 41.039003] psmouse: probe of serio2 failed with error -1
>> [ 41.071700] PM: suspend exit
>
> Sorry for the delay, but I wonder if you could try the patch below and
> tell me if that also fixes the issue for you?
>
> Also adding Hans as to make sure changes to psmouse_smbus make sense to
> him.
I'm not really familiar with the whole psmouse intertouch code. I've added Benjamin
Tissoires to the Cc who knows this code a lot better then I do.
Regards,
Hans
> diff --git a/drivers/input/mouse/psmouse-smbus.c b/drivers/input/mouse/psmouse-smbus.c
> index a472489ccbad..164f6c757f6b 100644
> --- a/drivers/input/mouse/psmouse-smbus.c
> +++ b/drivers/input/mouse/psmouse-smbus.c
> @@ -75,6 +75,8 @@ static void psmouse_smbus_detach_i2c_client(struct i2c_client *client)
> "Marking SMBus companion %s as gone\n",
> dev_name(&smbdev->client->dev));
> smbdev->dead = true;
> + device_link_remove(&smbdev->client->dev,
> + &smbdev->psmouse->ps2dev.serio->dev);
> serio_rescan(smbdev->psmouse->ps2dev.serio);
> } else {
> list_del(&smbdev->node);
> @@ -174,6 +176,8 @@ static void psmouse_smbus_disconnect(struct psmouse *psmouse)
> kfree(smbdev);
> } else {
> smbdev->dead = true;
> + device_link_remove(&smbdev->client->dev,
> + &psmouse->ps2dev.serio->dev);
> psmouse_dbg(smbdev->psmouse,
> "posting removal request for SMBus companion %s\n",
> dev_name(&smbdev->client->dev));
> @@ -270,6 +274,12 @@ int psmouse_smbus_init(struct psmouse *psmouse,
>
> if (smbdev->client) {
> /* We have our companion device */
> + if (!device_link_add(&smbdev->client->dev,
> + &psmouse->ps2dev.serio->dev,
> + DL_FLAG_STATELESS))
> + psmouse_warn(psmouse,
> + "failed to set up link with iSMBus companion %s\n",
> + dev_name(&smbdev->client->dev));
> return 0;
> }
>
>
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