linux-kernel - Re: [Patch v7 05/18] ACPI: Correct return value of acpi_dev_resource_address

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Message-ID: <CAErSpo6hq9+RV9sFe2gZL2mMHTPEDGQDfqP5J=TAZtJsj_1-Pg@mail.gmail.com>
Date:	Mon, 27 Oct 2014 16:49:06 -0600
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Jiang Liu <jiang.liu@...ux.intel.com>
Cc:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Randy Dunlap <rdunlap@...radead.org>,
	Yinghai Lu <yinghai@...nel.org>,
	Borislav Petkov <bp@...en8.de>, Len Brown <lenb@...nel.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tony Luck <tony.luck@...el.com>,
	Joerg Roedel <joro@...tes.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>
Subject: Re: [Patch v7 05/18] ACPI: Correct return value of acpi_dev_resource_address_space()

On Sun, Oct 26, 2014 at 11:21 PM, Jiang Liu <jiang.liu@...ux.intel.com> wrote:
> Change acpi_dev_resource_address_space() to return failure if the
> acpi_resource structure can't be converted to an ACPI address64
> structure, so caller could correctly detect failure.

Fixes: 046d9ce6820e ("ACPI: Move device resources interpretation code
from PNP to ACPI core")

Possible stable candidate?  046d9ce6820e appeared in v3.8.

> Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
> ---
>  drivers/acpi/resource.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
> index 2ba8f02ced36..782a0d15c25f 100644
> --- a/drivers/acpi/resource.c
> +++ b/drivers/acpi/resource.c
> @@ -200,7 +200,7 @@ bool acpi_dev_resource_address_space(struct acpi_resource *ares,
>
>         status = acpi_resource_to_address64(ares, &addr);
>         if (ACPI_FAILURE(status))
> -               return true;
> +               return false;
>
>         res->start = addr.minimum;
>         res->end = addr.maximum;
> --
> 1.7.10.4
>
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