linux-kernel - Re: [GIT PULL] ACPI and power management updates for 3.19-rc1

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Date:	Thu, 11 Dec 2014 19:59:20 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	"Rafael J. Wysocki" <rafael@...nel.org>
Cc:	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [GIT PULL] ACPI and power management updates for 3.19-rc1

On Mon, Dec 8, 2014 at 4:21 PM, Rafael J. Wysocki <rafael@...nel.org> wrote:
>
> Also the ACPI core is now going to support the _DEP configuration
> information in a limited way.

Hmm. That seems to be the cause of this annoying new message:

    ...
    ACPI: Using IOAPIC for interrupt routing
    PCI: Using host bridge windows from ACPI; if necessary, use
"pci=nocrs" and report a bug
    ACPI: [Package] has zero elements (ffff88040ccdb200)
    acpi LNXCPU:00: Failed to evaluate _DEP.
    ACPI: [Package] has zero elements (ffff88040ccdb200)
    acpi LNXCPU:01: Failed to evaluate _DEP.
    ACPI: [Package] has zero elements (ffff88040ccdb200)
    acpi LNXCPU:02: Failed to evaluate _DEP.
    ACPI: [Package] has zero elements (ffff88040ccdb200)
    acpi LNXCPU:03: Failed to evaluate _DEP.
    ACPI: [Package] has zero elements (ffff88040ccdb200)
    acpi LNXCPU:04: Failed to evaluate _DEP.
    ACPI: [Package] has zero elements (ffff88040ccdb200)
    acpi LNXCPU:05: Failed to evaluate _DEP.
    ACPI: [Package] has zero elements (ffff88040ccdb200)
    acpi LNXCPU:06: Failed to evaluate _DEP.
    ACPI: [Package] has zero elements (ffff88040ccdb200)
    acpi LNXCPU:07: Failed to evaluate _DEP.
    ACPI: [Package] has zero elements (ffff88040ccdb840)
    acpi device:27: Failed to evaluate _DEP.
    ACPI: [Package] has zero elements (ffff88040ccdb840)
    acpi device:3f: Failed to evaluate _DEP.
    ACPI: [Package] has zero elements (ffff88040ccdb8c0)
    acpi LNXVIDEO:00: Failed to evaluate _DEP.
    ACPI: Power Resource [FN00] (off)
    ...

which doesn't seem to hinder anything from working, but is extremely
annoying because it's printed out as some super-important "KERN_ERR
message of Doom!"

I don't see why incomplete ACPI tables would *ever* be "KERN_ERR"
level messages, but I particularly don't see it when it seems to be
our own meaningless fake entries.

                   Linus
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