linux-kernel - Re: [PATCH -next] powerpc/powermac: Fix symbol not declared warnings

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Date:   Fri, 19 Aug 2022 08:12:14 +0000
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Chen Lifu <chenlifu@...wei.com>,
        "benh@...nel.crashing.org" <benh@...nel.crashing.org>,
        "mpe@...erman.id.au" <mpe@...erman.id.au>,
        "npiggin@...il.com" <npiggin@...il.com>,
        "nick.child@....com" <nick.child@....com>,
        "zhengzucheng@...wei.com" <zhengzucheng@...wei.com>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "paulus@...ba.org" <paulus@...ba.org>,
        "rppt@...nel.org" <rppt@...nel.org>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "oohall@...il.com" <oohall@...il.com>
Subject: Re: [PATCH -next] powerpc/powermac: Fix symbol not declared warnings



Le 19/08/2022 à 09:43, Chen Lifu a écrit :
> 1. ppc_override_l2cr and ppc_override_l2cr_value are only used in
>     l2cr_init() function, so move them inside the function.
> 2. has_l2cache is not used outside of the file, so mark it static, and
>     do not initialise statics to 0.

You can do much more simple. Use *l2cr directly and remove 
ppc_override_l2cr and ppc_override_l2cr_value completely. And move the 
printk inside the 'if (l2cr)'.


> 
> Fixes the following warning:
> 
> arch/powerpc/platforms/powermac/setup.c:74:5: warning: symbol 'ppc_override_l2cr' was not declared. Should it be static?
> arch/powerpc/platforms/powermac/setup.c:75:5: warning: symbol 'ppc_override_l2cr_value' was not declared. Should it be static?
> arch/powerpc/platforms/powermac/setup.c:76:5: warning: symbol 'has_l2cache' was not declared. Should it be static?
> 
> Signed-off-by: Chen Lifu <chenlifu@...wei.com>
> ---
>   arch/powerpc/platforms/powermac/setup.c | 7 ++++---
>   1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
> index 04daa7f0a03c..f8b847a2f5b5 100644
> --- a/arch/powerpc/platforms/powermac/setup.c
> +++ b/arch/powerpc/platforms/powermac/setup.c
> @@ -68,13 +68,11 @@
> 
>   #include "pmac.h"
> 
>   #undef SHOW_GATWICK_IRQS
> 
> -int ppc_override_l2cr = 0;
> -int ppc_override_l2cr_value;
> -int has_l2cache = 0;
> +static int has_l2cache;
> 
>   int pmac_newworld;
> 
>   static int current_root_goodness = -1;
> 
> @@ -226,10 +224,13 @@ static void __init ohare_init(void)
>          }
>   }
> 
>   static void __init l2cr_init(void)
>   {
> +       int ppc_override_l2cr = 0;
> +       int ppc_override_l2cr_value;
> +
>          /* Checks "l2cr-value" property in the registry */
>          if (cpu_has_feature(CPU_FTR_L2CR)) {
>                  struct device_node *np;
> 
>                  for_each_of_cpu_node(np) {
> --
> 2.37.1
>