linux-kernel - Re: [PATCH] x86/io_apic_32: fix printk format warning

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Date:	Mon, 13 Oct 2008 14:22:54 -0700
From:	Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
To:	Alexander Beregalov <a.beregalov@...il.com>
Cc:	mingo@...e.hu, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86/io_apic_32: fix printk format warning

Alexander Beregalov wrote:
> arch/x86/kernel/io_apic_32.c: In function 'print_local_APIC':
> arch/x86/kernel/io_apic_32.c:1539: warning: format '%08x' expects type 'unsigned int', but argument 2 has type 'u64'
> arch/x86/kernel/io_apic_32.c:1540: warning: format '%08x' expects type 'unsigned int', but argument 2 has type 'u64'
> 
> Signed-off-by: Alexander Beregalov <a.beregalov@...il.com>
> ---
> 
>  arch/x86/kernel/io_apic_32.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/x86/kernel/io_apic_32.c b/arch/x86/kernel/io_apic_32.c
> index e710289..f678d12 100644
> --- a/arch/x86/kernel/io_apic_32.c
> +++ b/arch/x86/kernel/io_apic_32.c
> @@ -1536,8 +1536,8 @@ __apicdebuginit(void) print_local_APIC(void *dummy)
>  	}
>  
>  	icr = apic_icr_read();
> -	printk(KERN_DEBUG "... APIC ICR: %08x\n", icr);
> -	printk(KERN_DEBUG "... APIC ICR2: %08x\n", icr >> 32);
> +	printk(KERN_DEBUG "... APIC ICR: %08x\n", (unsigned int)icr);
> +	printk(KERN_DEBUG "... APIC ICR2: %08x\n", (unsigned int)(icr >> 32));

looks good, but I think casting to u32 is better, because u32 is used in io_apic_64.c.

thanks,
Hiroshi Shimamoto
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