linux-kernel - Re: [PATCH 09/12] PM / mfd: intel-lpss: Use DPM_FLAG_SMART

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Message-ID: <CAJZ5v0ipSJv0PWPrD3P-yeyD0JWe6EqSJSuZXgjtnFTrMEvpfQ@mail.gmail.com>
Date:   Tue, 31 Oct 2017 17:28:57 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Linux PM <linux-pm@...r.kernel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Alan Stern <stern@...land.harvard.edu>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux ACPI <linux-acpi@...r.kernel.org>,
        Linux PCI <linux-pci@...r.kernel.org>,
        Linux Documentation <linux-doc@...r.kernel.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Kevin Hilman <khilman@...nel.org>,
        Wolfram Sang <wsa@...-dreams.de>,
        linux-i2c <linux-i2c@...r.kernel.org>
Subject: Re: [PATCH 09/12] PM / mfd: intel-lpss: Use DPM_FLAG_SMART_SUSPEND

On Tue, Oct 31, 2017 at 4:09 PM, Lee Jones <lee.jones@...aro.org> wrote:
> On Mon, 16 Oct 2017, Rafael J. Wysocki wrote:
>
>> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
>>
>> Make the intel-lpss driver set DPM_FLAG_SMART_SUSPEND for its
>> devices which will allow them to stay in runtime suspend during
>> system suspend unless they need to be reconfigured for some reason.
>>
>> Also make it avoid resuming its child devices if they have
>> DPM_FLAG_SMART_SUSPEND set to allow them to remain in runtime
>> suspend during system suspend.
>>
>> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
>> ---
>>  drivers/mfd/intel-lpss.c |    6 +++++-
>>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> Is this patch independent?

It depends on the flag definition at least, but functionally it also
depends on the PCI support for the flag.

> For my own reference:
>   Acked-for-MFD-by: Lee Jones <lee.jones@...aro.org>

Thanks,
Rafael