From: "Robert R. Howell" <RHowell@uwyo.edu>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Hans de Goede <hdegoede@redhat.com>,
Kai-Heng Feng <kai.heng.feng@canonical.com>,
"rjw@rjwysocki.net" <rjw@rjwysocki.net>,
"lenb@kernel.org" <lenb@kernel.org>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Robert R. Howell" <RHowell@uwyo.edu>
Subject: Re: [PATCH] ACPI / LPSS: Don't skip late system PM ops for hibernate on BYT/CHT
Date: Tue, 23 Apr 2019 20:03:08 +0000 [thread overview]
Message-ID: <144b56d4-54e6-bccd-4652-22303bcd9168@uwyo.edu> (raw)
In-Reply-To: <CAJZ5v0j9U20cFbRx6QKeQv6wyDg6nL71L0U_Rec5+W1JoD8-=w@mail.gmail.com>
On 4/23/19 2:07 AM, Rafael J. Wysocki wrote:
>
> On Sat, Apr 20, 2019 at 12:44 AM Robert R. Howell <RHowell@uwyo.edu> wrote:
>>
>> On 4/18/19 5:42 AM, Hans de Goede wrote:
>>
>>>> On 4/8/19 2:16 AM, Hans de Goede wrote:>
>>>>>
>>>>> Hmm, interesting so you have hibernation working on a T100TA
>>>>> (with 5.0 + 02e45646d53b reverted), right ?
>>>>>
>>
>>
>> I've managed to find a way around the i2c_designware timeout issues
>> on the T100TA's. The key is to NOT set DPM_FLAG_SMART_SUSPEND,
>> which was added in the 02e45646d53b commit.
>>
>> To test that I've started with a 5.1-rc5 kernel, applied your recent patch
>> to acpi_lpss.c, then apply the following patch of mine, removing
>> DPM_FLAG_SMART_SUSPEND. (For the T100 hardware I need to apply some
>> other patches as well but those are not related to the i2c-designware or
>> acpi issues addressed here.)
>>
>> On a resume from hibernation I still see one error:
>> "i2c_designware 80860F41:00: Error i2c_dw_xfer called while suspended"
>> but I no longer get the i2c_designware timeouts, and audio does now work
>> after the resume.
>>
>> Removing DPM_FLAG_SMART_SUSPEND may not be what you want for other
>> hardware, but perhaps this will give you a clue as to what is going
>> wrong with hibernate/resume on the T100TA's.
>
> What if you drop DPM_FLAG_LEAVE_SUSPENDED alone instead?
>
I did try dropping just DPM_FLAG_LEAVE_SUSPENDED, dropping just
DPM_FLAG_SMART_SUSPEND, and dropping both flags. When I just drop
DPM_FLAG_LEAVE_SUSPENDED I still get the i2c_designware timeouts
after the resume. If I drop just DPM_FLAG_SMART_SUSPEND or drop both,
then the timeouts go away.
Bob Howell
next prev parent reply other threads:[~2019-04-23 20:03 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-03 5:43 [PATCH] ACPI / LPSS: Don't skip late system PM ops for hibernate on BYT/CHT Kai-Heng Feng
2019-04-03 8:33 ` Jarkko Nikula
2019-04-03 8:54 ` Hans de Goede
2019-04-07 20:58 ` Robert R. Howell
2019-04-07 20:58 ` Robert R. Howell
2019-04-08 3:44 ` Kai Heng Feng
2019-04-08 3:44 ` Kai Heng Feng
2019-04-11 19:50 ` Robert R. Howell
2019-04-11 19:50 ` Robert R. Howell
2019-04-08 8:16 ` Hans de Goede
2019-04-08 8:16 ` Hans de Goede
2019-04-11 19:50 ` Robert R. Howell
2019-04-11 19:50 ` Robert R. Howell
2019-04-18 11:42 ` Hans de Goede
2019-04-18 11:42 ` Hans de Goede
2019-04-19 22:44 ` Robert R. Howell
2019-04-19 22:44 ` Robert R. Howell
2019-04-23 8:07 ` Rafael J. Wysocki
2019-04-23 8:07 ` Rafael J. Wysocki
2019-04-23 20:03 ` Robert R. Howell [this message]
2019-04-23 20:03 ` Robert R. Howell
2019-04-24 7:20 ` Rafael J. Wysocki
2019-04-24 7:20 ` Rafael J. Wysocki
2019-04-25 16:38 ` Robert R. Howell
2019-04-25 16:38 ` Robert R. Howell
2019-04-30 14:39 ` Hans de Goede
2019-04-30 14:39 ` Hans de Goede
2019-05-09 4:24 ` Robert R. Howell
2019-05-09 8:50 ` Hans de Goede
2019-05-09 18:09 ` Robert R. Howell
2019-05-13 8:41 ` Hans de Goede
2019-05-16 16:34 ` Robert R. Howell
2019-05-14 10:10 ` Hans de Goede
2019-05-16 11:11 ` Rafael J. Wysocki
2019-05-16 16:35 ` Robert R. Howell
2019-05-16 22:42 ` Rafael J. Wysocki
2019-05-25 5:31 ` Robert R. Howell
2019-06-24 10:24 ` Rafael J. Wysocki
2019-06-24 10:51 ` Hans de Goede
2019-06-24 23:14 ` Rafael J. Wysocki
2019-06-26 18:43 ` Robert R. Howell
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