linux-kernel - [PATCH v3 0/8] PM / ACPI: sleep: Additional changes related to suspend-to-idle

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Date:   Fri, 02 Aug 2019 12:33:05 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Linux ACPI <linux-acpi@...r.kernel.org>
Cc:     Linux PM <linux-pm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Rajneesh Bhardwaj <rajneesh.bhardwaj@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mario Limonciello <mario.limonciello@...l.com>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>
Subject: [PATCH v3 0/8] PM / ACPI: sleep: Additional changes related to suspend-to-idle

Hi All,

> > On top of the "Simplify the suspend-to-idle control flow" patch series
> > posted previously:
> > 
> > https://lore.kernel.org/lkml/71085220.z6FKkvYQPX@kreacher/
> > 
> > sanitize the suspend-to-idle flow even further.
> > 
> > First off, decouple EC wakeup from the LPS0 _DSM processing (patch 1).
> > 
> > Next, reorder the code to invoke LPS0 _DSM Functions 5 and 6 in the
> > specification-compliant order with respect to suspending and resuming
> > devices (patch 2).
> > 
> > Finally, rearrange lps0_device_attach() (patch 3) and add a command line
> > switch to prevent the LPS0 _DSM from being used..
> 
> The v2 is because I found a (minor) bug in patch 1, decided to use a module
> parameter instead of a kernel command line option in patch 4.  Also, there
> are 4 new patches:
> 
> Patch 5: Switch the EC over to polling during "noirq" suspend and back
> during "noirq" resume.
> 
> Patch 6: Eliminate acpi_sleep_no_ec_events().
> 
> Patch 7: Consolidate some EC code depending on PM_SLEEP.
> 
> Patch 8: Add EC GPE dispatching debug message..

The v3 is just a rearranged v2 so as to move the post sensitive patch (previous patch 2)
to the end of the series.   [After applying the full series the code is the same as before.]

For easier testing, the series (along with some previous patches depended on by it)
is available in the pm-s2idle-testing branch of the linux-pm.git tree at kernel.org:

https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/log/?h=pm-s2idle-testing

Please refer to the changelogs for details.

Thanks,
Rafael