linux-kernel - Re: [Patch V3 00/16] Enable support of IOAPIC hotplug on x86 platforms

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Date:	Wed, 16 Jul 2014 11:01:45 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.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>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Randy Dunlap <rdunlap@...radead.org>,
	Yinghai Lu <yinghai@...nel.org>,
	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, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [Patch V3 00/16] Enable support of IOAPIC hotplug on x86 platforms

Hi Konrad,
	We have found the root cause with your great support. If BIOS
assigns an IRQ number for a PCI device, acpi_pci_irq_enable() fails to
assign IOAPIC IRQ then due to the check:
        if (dev->irq > 0)
                return 0;
	For a quick workaround, just comment out above check. But we
need some time to figure out a clean fixup for it. We will send out new
version once it gets resolved.
	Thanks for your great help again.
Regards!
Gerry
On 2014/7/16 0:10, Konrad Rzeszutek Wilk wrote:
> already assigned IRQ
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