linux-kernel - Re: [PATCH 0/30] ACPI / hotplug / PCI: Major rework + Thunderbolt workarounds

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Date:	Thu, 25 Jul 2013 06:25:06 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux PCI <linux-pci@...r.kernel.org>,
	Jiang Liu <liuj97@...il.com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: Re: [PATCH 0/30] ACPI / hotplug / PCI: Major rework + Thunderbolt workarounds

On Wed, Jul 24, 2013 at 5:58 AM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> On Tuesday, July 23, 2013 07:20:53 PM Yinghai Lu wrote:
>> On Tue, Jul 23, 2013 at 2:39 PM, Rafael J. Wysocki <rjw@...k.pl> wrote:
>
> [...]
>
>> [  102.631369] pci_host_bridge pci0000:00: freeing pci_host_bridge info
>
> By the way this looks fishy:
>
>> [  102.633091] ACPI: Device does not support D3cold
>> [  102.633915] ACPI: Device does not support D3cold
>> [  102.635221] ACPI: Device does not support D3cold
>> [  102.636103] ACPI: Device does not support D3cold
>> [  102.636902] ACPI: Device does not support D3cold
>> [  102.637685] ACPI: Device does not support D3cold
>> [  102.638467] ACPI: Device does not support D3cold
>> [  102.639631] ACPI: Device does not support D3cold
>> [  102.640472] ACPI: Device does not support D3cold
>> [  102.641310] ACPI: Device does not support D3cold
>> [  102.642105] ACPI: Device does not support D3cold
>> [  102.642928] ACPI: Device does not support D3cold
>> [  102.643725] ACPI: Device does not support D3cold
>> [  102.644544] ACPI: Device does not support D3cold
>> [  102.645344] ACPI: Device does not support D3cold
>> [  102.646126] ACPI: Device does not support D3cold
>> [  102.646902] ACPI: Device does not support D3cold
>> [  102.647677] ACPI: Device does not support D3cold
>> [  102.648485] ACPI: Device does not support D3cold
>> [  102.649269] ACPI: Device does not support D3cold
>> [  102.650065] ACPI: Device does not support D3cold
>> [  102.650822] ACPI: Device does not support D3cold
>> [  102.652483] ACPI: Device does not support D3cold
>> [  102.654157] ACPI: Device does not support D3cold
>> [  102.655803] ACPI: Device does not support D3cold
>> [  102.657419] ACPI: Device does not support D3cold
>> [  102.658528] ACPI: Device does not support D3cold
>> [  102.659255] ACPI: Device does not support D3cold
>> [  102.659973] ACPI: Device does not support D3cold
>> [  102.661807] ACPI: Device does not support D3cold
>> [  102.661925] ACPI: Device does not support D3cold
>> [  102.662047] ACPI: Device does not support D3cold
>> [  102.662148] ACPI: Device does not support D3cold
>> [  102.662258] ACPI: Device does not support D3cold
>> [  102.662374] ACPI: Device does not support D3cold
>> [  102.662486] ACPI: Device does not support D3cold
>> [  102.662597] ACPI: Device does not support D3cold
>> [  102.662711] ACPI: Device does not support D3cold
>> [  102.662814] ACPI: Device does not support D3cold
>> [  102.662918] ACPI: Device does not support D3cold
>> [  102.663019] ACPI: Device does not support D3cold
>
> Can you please check if it goes away with the patch below applied?
>
>> [  102.663039] ACPI: \_SB_.PCI0: No _EJ0 support for device
>
>
> ---
>  drivers/acpi/device_pm.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> Index: linux-pm/drivers/acpi/device_pm.c
> ===================================================================
> --- linux-pm.orig/drivers/acpi/device_pm.c
> +++ linux-pm/drivers/acpi/device_pm.c
> @@ -159,7 +159,8 @@ int acpi_device_set_power(struct acpi_de
>         int result = 0;
>         bool cut_power = false;
>
> -       if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3_COLD))
> +       if (!device || !device->flags.power_manageable
> +           || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3_COLD))
>                 return -EINVAL;
>
>         /* Make sure this is a valid target state */
>

yes, with this change, those print out are gone.

Thanks

Yinghai
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