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SubjectRe: [PATCH 07/17] ARM: at91: skip at91_io_desc definition for NOMMU
On 18:36 Tue 02 Oct     , Arnd Bergmann wrote:
> On NOMMU systems, we do cannot remap the MMIO space, so the
> definition of at91_io_desc is unused.
>
> Without this patch, building at91x40_defconfig results in:
>
> arch/arm/mach-at91/setup.c:90:24: warning: 'at91_io_desc' defined but not used [-Wunused-variable]
I prefer a __maybe_unused on the struct so the compilator will just drop it

Best Regards,
J.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
> Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
> ---
> arch/arm/mach-at91/setup.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
> index 944bffb..b9fdba0 100644
> --- a/arch/arm/mach-at91/setup.c
> +++ b/arch/arm/mach-at91/setup.c
> @@ -87,12 +87,14 @@ void __init at91_init_sram(int bank, unsigned long base, unsigned int length)
> iotable_init(desc, 1);
> }
>
> +#ifdef CONFIG_MMU
> static struct map_desc at91_io_desc __initdata = {
> .virtual = AT91_VA_BASE_SYS,
> .pfn = __phys_to_pfn(AT91_BASE_SYS),
> .length = SZ_16K,
> .type = MT_DEVICE,
> };
> +#endif
>
> static void __init soc_detect(u32 dbgu_base)
> {
> --
> 1.7.10
>


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