linux-kernel - Re: [PATCH 3/4] DRBG: Fix format string for debugging statements

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Message-ID: <4311965.FMe9YfRAnU@myon.chronox.de>
Date:	Sun, 29 Jun 2014 05:46:46 +0200
From:	Stephan Mueller <smueller@...onox.de>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	Herbert Xu <herbert@...dor.apana.org.au>,
	kbuild test robot <fengguang.wu@...el.com>, kbuild@...org,
	Dan Carpenter <dan.carpenter@...cle.com>,
	linux-crypto@...r.kernel.org, Randy Dunlap <rdunlap@...radead.org>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] DRBG: Fix format string for debugging statements

Am Sonntag, 29. Juni 2014, 12:24:02 schrieb Stephen Rothwell:

Hi Stephen,

> Hi Stephan,
> 
> On Sat, 28 Jun 2014 22:01:46 +0200 Stephan Mueller <smueller@...onox.de> 
wrote:
> > @@ -1987,8 +1987,9 @@ static int __init drbg_init(void)
> > 
> >  	if (ARRAY_SIZE(drbg_cores) * 2 > ARRAY_SIZE(drbg_algs)) {
> >  	
> >  		pr_info("DRBG: Cannot register all DRBG types"
> > 
> > -			"(slots needed: %lu, slots available: %lu)\n",
> > -			ARRAY_SIZE(drbg_cores) * 2, ARRAY_SIZE(drbg_algs));
> > +			"(slots needed: %u, slots available: %u)\n",
> > +			(unsigned int)ARRAY_SIZE(drbg_cores) * 2,
> > +			(unsigned int)ARRAY_SIZE(drbg_algs));
> 
> Doesn't ARRAY_SIZE() always return a size_t?  In which case surely we
> need no casts, but need to us %zu in the format string.

Unfortunately not at all. On my x86_64, I get the compiler warning that 
ARRAY_SIZE is a long unsigned int without the cast.

Ciao
Stephan
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