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

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Date:	Sat, 15 Sep 2012 09:53:01 +0200
From:	Thierry Reding <thierry.reding@...onic-design.de>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
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>,
	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>, 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 2/2] PCI: Provide a default pcibios_update_irq()

On Sat, Sep 15, 2012 at 09:32:10AM +0200, Geert Uytterhoeven wrote:
> On Fri, Sep 14, 2012 at 10:44 PM, Thierry Reding
> <thierry.reding@...onic-design.de> wrote:
> > --- a/drivers/pci/setup-irq.c
> > +++ b/drivers/pci/setup-irq.c
> > @@ -17,6 +17,14 @@
> >  #include <linux/ioport.h>
> >  #include <linux/cache.h>
> >
> > +void __devinit __weak pcibios_update_irq(struct pci_dev *dev, int irq)
> > +{
> > +#ifdef CONFIG_PCI_DEBUG
> > +       printk(KERN_DEBUG "PCI: Assigning IRQ %02d to %s\n", irq,
> > +              pci_name(dev));
> 
> pr_debug()?
> Or even better, dev_dbg()?

The problem with pr_debug() and dev_dbg() is that they will be compiled
out if DEBUG is not defined. Perhaps we should pass -DDEBUG if PCI_DEBUG
is configured and make this dev_dbg()?

Thierry

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