linux-kernel - Re: [PATCH] parisc: Use proper printk format for resource_size

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Message-ID: <20200114085344.GA4976@pi3>
Date:   Tue, 14 Jan 2020 09:53:44 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Helge Deller <deller@....de>
Cc:     "James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
        linux-parisc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] parisc: Use proper printk format for resource_size_t

On Tue, Jan 14, 2020 at 09:27:35AM +0100, Helge Deller wrote:
> On 03.01.20 17:39, Krzysztof Kozlowski wrote:
> > resource_size_t should be printed with its own size-independent format
> > to fix warnings when compiling on 64-bit platform (e.g. with
> > COMPILE_TEST):
> >
> >     arch/parisc/kernel/drivers.c: In function 'print_parisc_device':
> >     arch/parisc/kernel/drivers.c:892:9: warning:
> >         format '%p' expects argument of type 'void *',
> >         but argument 4 has type 'resource_size_t {aka unsigned int}' [-Wformat=]
> >
> > Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
> > ---
> >  arch/parisc/kernel/drivers.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c
> > index a6c9f49c6612..a154de424421 100644
> > --- a/arch/parisc/kernel/drivers.c
> > +++ b/arch/parisc/kernel/drivers.c
> > @@ -889,8 +889,8 @@ static void print_parisc_device(struct parisc_device *dev)
> >  	static int count;
> >
> >  	print_pa_hwpath(dev, hw_path);
> > -	pr_info("%d. %s at 0x%px [%s] { %d, 0x%x, 0x%.3x, 0x%.5x }",
> > -		++count, dev->name, (void*) dev->hpa.start, hw_path, dev->id.hw_type,
> > +	pr_info("%d. %s at %pa[p] [%s] { %d, 0x%x, 0x%.3x, 0x%.5x }",
> 
> It needs to be    %pap   instead of   %pa[p].
> The documentation in Documentation/core-api/printk-formats.rst is correct, but misleading.
> I corrected & applied it.
> Thanks!

Damn it, you're right. Thanks for noticing!

Best regards,
Krzysztof