linux-kernel - Re: [PATCH 1/8] char/rtc: replace blacklist with whitelist

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Message-ID: <20160427083124.GF3264@piout.net>
Date:	Wed, 27 Apr 2016 10:31:24 +0200
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	tony.luck@...el.com, geert@...ux-m68k.org, jejb@...isc-linux.org,
	deller@....de, benh@...nel.crashing.org, mpe@...erman.id.au,
	dalias@...c.org, dhowells@...hat.com,
	yasutake.koichi@...panasonic.com, rth@...ddle.net,
	ink@...assic.park.msu.ru, linux-alpha@...r.kernel.org,
	x86@...nel.org, a.zummo@...ertech.it, linux-kernel@...r.kernel.org,
	linux-ia64@...r.kernel.org, linux-parisc@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org, linux-sh@...r.kernel.org,
	rtc-linux@...glegroups.com, linux-arch@...r.kernel.org
Subject: Re: [PATCH 1/8] char/rtc: replace blacklist with whitelist

On 26/04/2016 at 23:44:05 +0200, Arnd Bergmann wrote :
> Every new architecture has to add itself to the growing list of those
> that do not support the legacy PC RTC driver.
> 
> This replaces the long list of architectures that don't support it
> with a shorter list of those that do.
> 
> The list is taken from those architectures that have a non-empty
> asm/mc146818rtc.h header file and were not explicitly blacklisted.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
Acked-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>

> ---
>  drivers/char/Kconfig | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
> index 3ec0766ed5e9..66b5d48f409a 100644
> --- a/drivers/char/Kconfig
> +++ b/drivers/char/Kconfig
> @@ -279,8 +279,7 @@ if RTC_LIB=n
>  
>  config RTC
>  	tristate "Enhanced Real Time Clock Support (legacy PC RTC driver)"
> -	depends on !PPC && !PARISC && !IA64 && !M68K && !SPARC && !FRV \
> -			&& !ARM && !SUPERH && !S390 && !AVR32 && !BLACKFIN && !UML
> +	depends on ALPHA || (MIPS && MACH_LOONGSON64) || MN10300 || X86
>  	---help---
>  	  If you say Y here and create a character special file /dev/rtc with
>  	  major number 10 and minor number 135 using mknod ("man mknod"), you
> -- 
> 2.7.0
> 

-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com