linux-kernel - Re: [PATCH 7/7] powerpc: fix a problematic usage of WARN()

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Message-ID: <1448515544.9839.11.camel@ellerman.id.au>
Date:	Thu, 26 Nov 2015 16:25:44 +1100
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Geliang Tang <geliangtang@....com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Scott Wood <scottwood@...escale.com>,
	David Gibson <david@...son.dropbear.id.au>
Cc:	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 7/7] powerpc: fix a problematic usage of WARN()

On Wed, 2015-11-25 at 21:12 +0800, Geliang Tang wrote:
> WARN() takes a condition and a format string. The condition was
> omitted. So I added it.
> 
> Signed-off-by: Geliang Tang <geliangtang@....com>
> ---
>  arch/powerpc/kernel/setup_64.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
> index 5c03a6a..726a9fb 100644
> --- a/arch/powerpc/kernel/setup_64.c
> +++ b/arch/powerpc/kernel/setup_64.c
> @@ -127,7 +127,7 @@ static void setup_tlb_core_data(void)
>  		    !mmu_has_feature(MMU_FTR_USE_TLBRSRV) &&
>  		    book3e_htw_mode != PPC_HTW_E6500) {
>  			/* Should we panic instead? */
> -			WARN_ONCE("%s: unsupported MMU configuration -- expect problems\n",
> +			WARN_ONCE(1, "%s: unsupported MMU configuration -- expect problems\n",
>  				  __func__);
>  		}
>  	}

Oh yuck.

Acked-by: Michael Ellerman <mpe@...erman.id.au>

cheers

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