From: "Robert R. Howell" <RHowell@uwyo.edu>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
Linux PM <linux-pm@vger.kernel.org>
Cc: Linux PCI <linux-pci@vger.kernel.org>,
Linux ACPI <linux-acpi@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Bjorn Helgaas <helgaas@kernel.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Hans De Goede <hdegoede@redhat.com>
Subject: Re: [PATCH v2 1/5] PM: ACPI/PCI: Resume all devices during hibernation
Date: Tue, 2 Jul 2019 04:24:01 +0000 [thread overview]
Message-ID: <848e9c1b-7775-58bf-ac12-a8618b526876@uwyo.edu> (raw)
In-Reply-To: <6191578.xJk2HsE5MX@kreacher>
On 7/1/19 4:44 AM, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>
> Both the PCI bus type and the ACPI PM domain avoid resuming
> runtime-suspended devices with DPM_FLAG_SMART_SUSPEND set during
> hibernation (before creating the snapshot image of system memory),
> but that turns out to be a mistake. It leads to functional issues
> and adds complexity that's hard to justify.
>
> For this reason, resume all runtime-suspended PCI devices and all
> devices in the ACPI PM domains before creating a snapshot image of
> system memory during hibernation.
>
> Fixes: 05087360fd7a (ACPI / PM: Take SMART_SUSPEND driver flag into account)
> Fixes: c4b65157aeef (PCI / PM: Take SMART_SUSPEND driver flag into account)
> Link: https://lore.kernel.org/linux-acpi/917d4399-2e22-67b1-9d54-808561f9083f@uwyo.edu/T/#maf065fe6e4974f2a9d79f332ab99dfaba635f64c
> Reported-by: Robert R. Howell <RHowell@uwyo.edu>
> Tested-by: Robert R. Howell <RHowell@uwyo.edu>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> ---
>
> -> v2: No changes.
I've tested your v2 patch set on my ASUS T100TA, applying just those 5 patches to the
5.2-rc7 kernel, and they do fix the hibernation problem. The i2c_designware
timeout errors are now gone and sound does now work after resume from both
suspend and hibernate.
As before I still see the "i2c_designware 80860F41:00: Transfer while suspended" error
on the first resume from either suspend or hibernate, but also as before that
particular error doesn't seem to cause a persistent problem and the system works
normally after the resume.
Bob Howell
next prev parent reply other threads:[~2019-07-02 4:24 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-01 10:42 [PATCH v2 0/5] PM: PCI/ACPI: Hibernation handling fixes Rafael J. Wysocki
2019-07-01 10:44 ` [PATCH v2 1/5] PM: ACPI/PCI: Resume all devices during hibernation Rafael J. Wysocki
2019-07-01 16:15 ` Mika Westerberg
2019-07-02 15:59 ` Rafael J. Wysocki
2019-07-02 4:24 ` Robert R. Howell [this message]
2019-07-01 10:46 ` [PATCH v2 2/5] PCI: PM: Simplify bus-level hibernation callbacks Rafael J. Wysocki
2019-07-01 10:54 ` [PATCH v2 3/5] ACPI: PM: Simplify and fix PM domain " Rafael J. Wysocki
2019-07-01 10:54 ` [PATCH v2 4/5] ACPI: PM: Introduce "poweroff" callbacks for ACPI PM domain and LPSS Rafael J. Wysocki
2019-07-01 10:55 ` [PATCH v2 5/5] ACPI: PM: Drop unused function and function header Rafael J. Wysocki
2019-07-01 11:30 ` [PATCH v2 0/5] PM: PCI/ACPI: Hibernation handling fixes Hans de Goede
2019-07-01 16:20 ` Mika Westerberg
2019-07-05 9:50 ` Rafael J. Wysocki
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