linux-kernel - Re: [PATCH v2 2/2] PCI: Provide a default pcibios_update

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Date:	Thu, 20 Sep 2012 08:37:31 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Thierry Reding <thierry.reding@...onic-design.de>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Richard Henderson <rth@...ddle.net>,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>,
	Matt Turner <mattst88@...il.com>,
	Russell King <linux@....linux.org.uk>,
	Tony Luck <tony.luck@...el.com>,
	Fenghua Yu <fenghua.yu@...el.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Paul Mundt <lethal@...ux-sh.org>,
	"David S. Miller" <davem@...emloft.net>,
	Chris Metcalf <cmetcalf@...era.com>,
	Guan Xuetao <gxt@...c.pku.edu.cn>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	Chris Zankel <chris@...kel.net>,
	Greg Ungerer <gerg@...inux.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-alpha@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-ia64@...r.kernel.org,
	linux-m68k@...ts.linux-m68k.org, linux-mips@...ux-mips.org,
	linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
	linux-pci@...r.kernel.org
Subject: Re: [PATCH v2 2/2] PCI: Provide a default pcibios_update_irq()

Hi,

On Mon, 17 Sep 2012 13:22:54 +0200 Thierry Reding <thierry.reding@...onic-design.de> wrote:
>
> diff --git a/drivers/pci/setup-irq.c b/drivers/pci/setup-irq.c
> index 270ae7b..3d61ce3 100644
> --- a/drivers/pci/setup-irq.c
> +++ b/drivers/pci/setup-irq.c
> @@ -17,6 +17,11 @@
>  #include <linux/ioport.h>
>  #include <linux/cache.h>
>  
> +void __weak pcibios_update_irq(struct pci_dev *dev, int irq)
> +{
> +	dev_dbg(&dev->dev, "Assigning IRQ %02d\n", irq);
> +	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
> +}
>  
>  static void
>  pdev_fixup_irq(struct pci_dev *dev,

Didn't we have a problem with some compiler versions when the weak
definition was in the same file as the call (there is a call to this
function in drivers/pci/setup-irq.c)?

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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