linux-kernel - Re: [PATCH] drivers/clocksource/Kconfig: Let SH_TIMER_CMT depend on HAS

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Message-ID: <542D55E1.2090309@gmail.com>
Date:	Thu, 02 Oct 2014 21:40:49 +0800
From:	Chen Gang <gang.chen.5i5j@...il.com>
To:	daniel.lezcano@...aro.org, tglx@...utronix.de
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"richard@....at >> Richard Weinberger" <richard@....at>
Subject: Re: [PATCH] drivers/clocksource/Kconfig: Let SH_TIMER_CMT depend
 on HAS_IOMEM


Sorry, it also contents another items which need HAS_IOMEM in this
config file, this patch is incomplete, I shall send patch v2 for it.

Thanks.

On 10/2/14 21:34, Chen Gang wrote:
> SH_TIMER_CMT will use IO memory features which needs HAS_IOMEM, so need
> depend on it. The related error (with allmodconfig under um):
> 
>     CC      drivers/clocksource/sh_cmt.o
>   drivers/clocksource/sh_cmt.c: In function 'sh_cmt_map_memory':
>   drivers/clocksource/sh_cmt.c:920:2: error: implicit declaration of function 'ioremap_nocache' [-Werror=implicit-function-declaration]
>     cmt->mapbase = ioremap_nocache(mem->start, resource_size(mem));
>     ^
>   drivers/clocksource/sh_cmt.c:920:15: warning: assignment makes pointer from integer without a cast [enabled by default]
>     cmt->mapbase = ioremap_nocache(mem->start, resource_size(mem));
>                  ^
>   drivers/clocksource/sh_cmt.c: In function 'sh_cmt_setup':
>   drivers/clocksource/sh_cmt.c:1034:2: error: implicit declaration of function 'iounmap' [-Werror=implicit-function-declaration]
>     iounmap(cmt->mapbase);
>     ^
> 
> Signed-off-by: Chen Gang <gang.chen.5i5j@...il.com>
> ---
>  drivers/clocksource/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
> index 82a2ebe..ee8aeeb 100644
> --- a/drivers/clocksource/Kconfig
> +++ b/drivers/clocksource/Kconfig
> @@ -172,7 +172,7 @@ config SYS_SUPPORTS_EM_STI
>  
>  config SH_TIMER_CMT
>  	bool "Renesas CMT timer driver" if COMPILE_TEST
> -	depends on GENERIC_CLOCKEVENTS
> +	depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
>  	default SYS_SUPPORTS_SH_CMT
>  	help
>  	  This enables build of a clocksource and clockevent driver for
> 

-- 
Chen Gang

Open, share, and attitude like air, water, and life which God blessed
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