linux-kernel - Re: [PATCH] PCI/PM: Note that PME can be generated from D0

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Message-ID: <CAJZ5v0gKShBYor_80qfP8F_4oCKKxDefjbqRzr5GrqHOV6-Yog@mail.gmail.com>
Date:   Thu, 17 Oct 2019 16:25:52 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Linux PCI <linux-pci@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH] PCI/PM: Note that PME can be generated from D0

On Wed, Oct 16, 2019 at 9:44 PM Bjorn Helgaas <helgaas@...nel.org> wrote:
>
> From: Bjorn Helgaas <bhelgaas@...gle.com>
>
> Per PCIe r5.0 sec 7.5.2.1, PME may be generated from D0, so update
> Documentation/power/pci.rst to reflect that.
>
> Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>

Good catch:

Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

> ---
>  Documentation/power/pci.rst | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/power/pci.rst b/Documentation/power/pci.rst
> index db41a770a2f5..a90e82c70a3b 100644
> --- a/Documentation/power/pci.rst
> +++ b/Documentation/power/pci.rst
> @@ -130,8 +130,8 @@ a full power-on reset sequence and the power-on defaults are restored to the
>  device by hardware just as at initial power up.
>
>  PCI devices supporting the PCI PM Spec can be programmed to generate PMEs
> -while in a low-power state (D1-D3), but they are not required to be capable
> -of generating PMEs from all supported low-power states.  In particular, the
> +while in any power state (D0-D3), but they are not required to be capable
> +of generating PMEs from all supported power states.  In particular, the
>  capability of generating PMEs from D3cold is optional and depends on the
>  presence of additional voltage (3.3Vaux) allowing the device to remain
>  sufficiently active to generate a wakeup signal.
> --
> 2.23.0.700.g56cf767bdb-goog
>