linux-kernel - Re: [PATCH V2 11/23] arm64, pci: Remove useless boot time IRQ assignment when booting with DT.

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Date:	Tue, 12 Jan 2016 13:50:23 +0000
From:	Lorenzo Pieralisi <lorenzo.pieralisi@....com>
To:	Tomasz Nowicki <tn@...ihalf.com>
Cc:	bhelgaas@...gle.com, arnd@...db.de, will.deacon@....com,
	catalin.marinas@....com, rjw@...ysocki.net, hanjun.guo@...aro.org,
	okaya@...eaurora.org, jiang.liu@...ux.intel.com,
	Stefano.Stabellini@...citrix.com,
	robert.richter@...iumnetworks.com, mw@...ihalf.com,
	Liviu.Dudau@....com, ddaney@...iumnetworks.com, tglx@...utronix.de,
	wangyijing@...wei.com, Suravee.Suthikulpanit@....com,
	msalter@...hat.com, linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, linaro-acpi@...ts.linaro.org,
	jchandra@...adcom.com, jcm@...hat.com
Subject: Re: [PATCH V2 11/23] arm64, pci: Remove useless boot time IRQ
 assignment when booting with DT.

On Wed, Dec 16, 2015 at 04:16:21PM +0100, Tomasz Nowicki wrote:
> In order to probe PCIe host controller when booting with DT,
> ARM64 is using drivers which defer IRQ assignment to device
> enable time. It means that boot time DT specific irq map initialization
> is always overridden, so lets remove that code.
> 
> Signed-off-by: Tomasz Nowicki <tn@...ihalf.com>
> ---
>  arch/arm64/kernel/pci.c | 10 ----------
>  1 file changed, 10 deletions(-)
> 
> diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
> index 023b983..f7948f5 100644
> --- a/arch/arm64/kernel/pci.c
> +++ b/arch/arm64/kernel/pci.c
> @@ -51,16 +51,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
>  	return pci_enable_resources(dev, mask);
>  }
>  
> -/*
> - * Try to assign the IRQ number from DT when adding a new device
> - */
> -int pcibios_add_device(struct pci_dev *dev)
> -{
> -	dev->irq = of_irq_parse_and_map_pci(dev, 0, 0);
> -
> -	return 0;
> -}
> -

Actually, this patch should be part of Matthew's series:

http://comments.gmane.org/gmane.linux.kernel.pci/46461

Lorenzo