linux-kernel - Re: [PATCH] powerpc: cell: make spu

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Message-ID: <2025091830-deeply-crave-728d@gregkh>
Date: Thu, 18 Sep 2025 18:19:39 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Adrian Barnaś <abarnas@...gle.com>
Cc: Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc: cell: make spu_subsys const

On Thu, Sep 18, 2025 at 02:16:33PM +0000, Adrian Barnaś wrote:
> Because driver core can properly handle constant struct bus_type,
> move the spu_subsys to be a constant structure as well, placing it into
> read-only memory which can not be modified at runtime.
> 
> Signed-off-by: Adrian Barnaś <abarnas@...gle.com>
> ---
>  arch/powerpc/platforms/cell/spu_base.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
> index 2c07387201d0..733b512992c0 100644
> --- a/arch/powerpc/platforms/cell/spu_base.c
> +++ b/arch/powerpc/platforms/cell/spu_base.c
> @@ -464,7 +464,7 @@ void spu_init_channels(struct spu *spu)
>  }
>  EXPORT_SYMBOL_GPL(spu_init_channels);
>  
> -static struct bus_type spu_subsys = {
> +static const struct bus_type spu_subsys = {
>  	.name = "spu",
>  	.dev_name = "spu",
>  };
> -- 
> 2.51.0.470.ga7dc726c21-goog
> 

Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>