linux-kernel - Re: [Patch v7 01/18] ACPI, irq: fix regression casued by 6b9fb7082409

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Message-ID: <alpine.DEB.2.11.1410281943100.5308@nanos>
Date:	Tue, 28 Oct 2014 19:45:32 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
cc:	Jiang Liu <jiang.liu@...ux.intel.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	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 <len.brown@...el.com>, Pavel Machek <pavel@....cz>,
	"x86@...nel.org" <x86@...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>,
	"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>,
	"Zhang, Rui" <rui.zhang@...el.com>,
	Linux PM list <linux-pm@...r.kernel.org>
Subject: Re: [Patch v7 01/18] ACPI, irq: fix regression casued by
 6b9fb7082409

On Tue, 28 Oct 2014, Bjorn Helgaas wrote:
> The subject should describe the change you're making.  "Fix regression
> caused by xxx" doesn't say anything about what the patch does.
> 
> On Sun, Oct 26, 2014 at 11:21 PM, Jiang Liu <jiang.liu@...ux.intel.com> wrote:
> > When IOAPIC is disabled, acpi_gsi_to_irq() should return gsi directly
> > instead of calling mp_map_gsi_to_irq() to translate gsi to IRQ by IOAPIC.
> 
> I don't know what the convention is or if there even is one, but "GSI"
> is even more of an acronym than "IRQ", so I'd capitalize it.
> 
> > It fixes https://bugzilla.kernel.org/show_bug.cgi?id=84381.
> 
> A line like the following may be useful to those who have to backport this.
> 
> Fixes: 6b9fb7082409 ("x86, ACPI, irq: Consolidate algorithm of mapping
> (ioapic, pin) to IRQ number")

The patch is already queued in tip x86/urgent with a proper changelog.

http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?id=961b6a7003acec4f9d70dabc1a253b783cb74272

Thanks,

	tglx
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