linux-kernel - Re: [PATCH] lib: vsprintf: Add %pa format specifier for phys_addr

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Date:	Mon, 21 Jan 2013 23:52:25 -0800
From:	Joe Perches <joe@...ches.com>
To:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:	Stepan Moskovchenko <stepanm@...eaurora.org>,
	Rob Landley <rob@...dley.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	George Spelvin <linux@...izon.com>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Andrei Emeltchenko <andrei.emeltchenko@...el.com>,
	mingo@...nel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH] lib: vsprintf: Add %pa format specifier for phys_addr_t
 types

On Tue, 2013-01-22 at 09:29 +0200, Andy Shevchenko wrote:
> On Mon, 2013-01-21 at 21:47 -0800, Stepan Moskovchenko wrote: 
> > Add the %pa format specifier for printing a phys_addr_t
> > type, since the physical address size on some platforms
> > can vary based on build options, regardless of the native
> > integer type.
[]
> > diff --git a/lib/vsprintf.c b/lib/vsprintf.c
[]
>  @@ -1112,6 +1113,12 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
> >  			return netdev_feature_string(buf, end, ptr, spec);
> >  		}
> >  		break;
> > +	case 'a':
> > +		spec.flags |= SPECIAL | SMALL | ZEROPAD;
> > +		spec.field_width = sizeof(phys_addr_t) * 2;

I believe this should be:

	spec.field_width = sizeof(phys_addr_t) * 2 + 2;

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