Re: [PATCH 1/5] ARM: mm: cache-l2x0: Add base address argument to write_sec callback

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> diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h
> index 060a75e..ddaebcd 100644
> --- a/arch/arm/include/asm/mach/arch.h
> +++ b/arch/arm/include/asm/mach/arch.h
> @@ -46,7 +46,8 @@ struct machine_desc {
>         enum reboot_mode        reboot_mode;    /* default restart mode */
>         unsigned                l2c_aux_val;    /* L2 cache aux value   */
>         unsigned                l2c_aux_mask;   /* L2 cache aux mask    */
> -       void                    (*l2c_write_sec)(unsigned long, unsigned);
> +       void                    (*l2c_write_sec)(void __iomem *,
> +                                                unsigned long, unsigned);
>         struct smp_operations   *smp;           /* SMP operations       */
>         bool                    (*smp_init)(void);
>         void                    (*fixup)(struct tag *, char **);

> diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
> index efc5cab..1695eab 100644
> --- a/arch/arm/mm/cache-l2x0.c
> +++ b/arch/arm/mm/cache-l2x0.c
> @@ -72,7 +72,7 @@ static void l2c_write_sec(unsigned long val, void __iomem *base, unsigned reg)
>         if (val == readl_relaxed(base + reg))
>                 return;
>         if (outer_cache.write_sec)
> -               outer_cache.write_sec(val, reg);
> +               outer_cache.write_sec(base, val, reg);
>         else
>                 writel_relaxed(val, base + reg);
>  }

The parameter order (base, val, reg) seems very non-intuitive.
Are you matching some existing prototype or adhering to some
backwards compatibility issue?  If not wouldn't, say, (base, reg, val)
or (val, base, reg) be more intuitive?

Thanks,
jdl
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