linux-kernel - Re: [PATCH -mmotm] 8250_early: fix printk format warnings

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Message-Id: <20100709154644.f5d8877a.akpm@linux-foundation.org>
Date:	Fri, 9 Jul 2010 15:46:44 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	Randy Dunlap <randy.dunlap@...cle.com>,
	linux-kernel@...r.kernel.org,
	Samium Gromoff <_deepfire@...lingofgreen.ru>,
	Greg KH <greg@...ah.com>
Subject: Re: [PATCH -mmotm] 8250_early: fix printk format warnings

On Fri,  9 Jul 2010 14:47:52 +0900 (JST)
KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> wrote:

> > From: Randy Dunlap <randy.dunlap@...cle.com>
> > 
> > Fix printk format warnings in serial-mmio32-support-for-8250_earlyc.patch:
> > 
> > drivers/serial/8250_early.c:207: warning: format '%p' expects type 'void *', but argument 3 has type 'long long unsigned int'
> > drivers/serial/8250_early.c:210: warning: format '%p' expects type 'void *', but argument 2 has type 'long long unsigned int'
> > 
> > Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
> > Cc: Samium Gromoff <_deepfire@...lingofgreen.ru>
> > Cc: Greg KH <greg@...ah.com>
> > ---
> >  drivers/serial/8250_early.c |    4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > --- mmotm-2010-0701-1219.orig/drivers/serial/8250_early.c
> > +++ mmotm-2010-0701-1219/drivers/serial/8250_early.c
> > @@ -202,12 +202,12 @@ static int __init parse_options(struct e
> >  	}
> >  
> >  	if (mmio || mmio32)
> > -		printk(KERN_INFO "Early serial console at MMIO%s 0x%p (options '%s')\n",
> > +		printk(KERN_INFO "Early serial console at MMIO%s 0x%llu (options '%s')\n",
> >  		       mmio32 ? "32" : "", (unsigned long long) port->mapbase,
> >  		       device->options);
> >  	else
> >  		printk(KERN_INFO "Early serial console at I/O port 0x%pr (options '%s')\n",
> > -		       (unsigned long long) port->iobase, device->options);
> > +		       (void *) port->iobase, device->options);
> 
> seems still odd.

Yes.

> %pr don't mean bare pointer. it want resource. another %pr use case is here.
> 
> drivers/pnp/resoruce.c
> ======================================================================
> struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
>                                           int flags)
> {
>         struct pnp_resource *pnp_res;
>         struct resource *res;
> (snip)
>         pnp_dbg(&dev->dev, "  add %pr\n", res);
> ======================================================================
> 
> and port->iobase is merely unsingned long.
> I guess following change or something like are necessary.
> 
> -               printk(KERN_INFO "Early serial console at I/O port 0x%pr (options '%s')\n",
> -                      (unsigned long long) port->iobase, device->options);
> +               printk(KERN_INFO "Early serial console at I/O port %lu (options '%s')\n",
> +                      port->iobase, device->options);
> 

This?

	if (mmio || mmio32)
		printk(KERN_INFO
		       "Early serial console at MMIO%s 0x%llu (options '%s')\n",
			mmio32 ? "32" : "",
			(unsigned long long)port->mapbase,
			device->options);
	else
		printk(KERN_INFO
		      "Early serial console at I/O port 0x%lu (options '%s')\n",
			port->iobase,
			device->options);

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