linux-kernel - Re: [PATCH v4,3/4] powerpc: sysdev: fix compile warning for fsl_85xx_cache

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Message-ID: <fc8056f5-d1b1-8915-1884-2403f7b7a3f3@c-s.fr>
Date:   Thu, 16 Apr 2020 17:46:49 +0200
From:   Christophe Leroy <christophe.leroy@....fr>
To:     Wang Wenhu <wenhu.wang@...o.com>, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, oss@...error.net,
        linuxppc-dev@...ts.ozlabs.org
Cc:     kernel@...o.com, Michael Ellerman <mpe@...erman.id.au>
Subject: Re: [PATCH v4,3/4] powerpc: sysdev: fix compile warning for
 fsl_85xx_cache_sram



Le 16/04/2020 à 17:35, Wang Wenhu a écrit :
> Function instantiate_cache_sram should not be linked into the init
> section for its caller mpc85xx_l2ctlr_of_probe is none-__init.
> 
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Cc: Christophe Leroy <christophe.leroy@....fr>
> Cc: Scott Wood <oss@...error.net>
> Cc: Michael Ellerman <mpe@...erman.id.au>
> Cc: linuxppc-dev@...ts.ozlabs.org
> Fixes: 6db92cc9d07d ("powerpc/85xx: add cache-sram support")
> Signed-off-by: Wang Wenhu <wenhu.wang@...o.com>

Reviewed-by: Christophe Leroy <christophe.leroy@....fr>

> 
> Warning information:
>    MODPOST vmlinux.o
> WARNING: modpost: vmlinux.o(.text+0x1e540): Section mismatch in reference from the function mpc85xx_l2ctlr_of_probe() to the function .init.text:instantiate_cache_sram()
> The function mpc85xx_l2ctlr_of_probe() references
> the function __init instantiate_cache_sram().
> This is often because mpc85xx_l2ctlr_of_probe lacks a __init
> annotation or the annotation of instantiate_cache_sram is wrong.
> ---
> Changes since v1:
>   * None
> Changes since v2:
>   * None
> Changes since v3:
>   * None
> ---
>   arch/powerpc/sysdev/fsl_85xx_cache_sram.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/powerpc/sysdev/fsl_85xx_cache_sram.c b/arch/powerpc/sysdev/fsl_85xx_cache_sram.c
> index be3aef4229d7..3de5ac8382c0 100644
> --- a/arch/powerpc/sysdev/fsl_85xx_cache_sram.c
> +++ b/arch/powerpc/sysdev/fsl_85xx_cache_sram.c
> @@ -68,7 +68,7 @@ void mpc85xx_cache_sram_free(void *ptr)
>   }
>   EXPORT_SYMBOL(mpc85xx_cache_sram_free);
>   
> -int __init instantiate_cache_sram(struct platform_device *dev,
> +int instantiate_cache_sram(struct platform_device *dev,
>   		struct sram_parameters sram_params)
>   {
>   	int ret = 0;
>