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

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Date:	Tue, 28 Oct 2014 00:11:53 +0100
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
Cc:	Jiang Liu <jiang.liu@...ux.intel.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	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 Monday, October 27, 2014 04:49:06 PM Bjorn Helgaas wrote:
> 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.

Well, are we seeing problems with it?

> > 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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-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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