linux-kernel - RE: [PATCH v3 0/7] PCI: PM: Move to D0 before calling pci_legacy_resume

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Message-ID: <PU1P153MB016959BF4A437FF0C21F5834BF930@PU1P153MB0169.APCP153.PROD.OUTLOOK.COM>
Date:   Tue, 15 Oct 2019 18:24:23 +0000
From:   Dexuan Cui <decui@...rosoft.com>
To:     Bjorn Helgaas <helgaas@...nel.org>
CC:     "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Michael Kelley <mikelley@...rosoft.com>,
        Sasha Levin <Alexander.Levin@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        KY Srinivasan <kys@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "olaf@...fle.de" <olaf@...fle.de>,
        "apw@...onical.com" <apw@...onical.com>,
        "jasowang@...hat.com" <jasowang@...hat.com>,
        vkuznets <vkuznets@...hat.com>,
        "marcelo.cerri@...onical.com" <marcelo.cerri@...onical.com>,
        "jackm@...lanox.com" <jackm@...lanox.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "driverdev-devel@...uxdriverproject.org" 
        <driverdev-devel@...uxdriverproject.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>
Subject: RE: [PATCH v3 0/7] PCI: PM: Move to D0 before calling
 pci_legacy_resume_early()

> From: Bjorn Helgaas <helgaas@...nel.org>
> Sent: Monday, October 14, 2019 4:00 PM
>  ...
> 
> Dexuan, the important thing here is the first patch, which is your [1],
> which I modified by doing pci_restore_state() as well as setting to D0:
> 
>   pci_set_power_state(pci_dev, PCI_D0);
>   pci_restore_state(pci_dev);
> 
> I'm proposing some more patches on top.  None are relevant to the problem
> you're solving; they're just minor doc and other updates in the same area.
> 
> Rafael, if you have a chance to look at these, I'd appreciate it.  I tried
> to make the doc match the code, but I'm no PM expert.
 
Thank you very much, Bjorn! The patchset looks good to me.

Thanks,
-- Dexuan