linux-kernel - Re: [PATCH] watchdog: orion: don't build for ARCH

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Message-ID: <20170515161705.GA22188@roeck-us.net>
Date:   Mon, 15 May 2017 09:17:05 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Wim Van Sebroeck <wim@...ana.be>, linux-watchdog@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] watchdog: orion: don't build for ARCH_EBSA110

On Mon, May 15, 2017 at 05:50:19PM +0200, Arnd Bergmann wrote:
> The randconfig builder caught another corner case with this driver that
> fails to build for EBSA110 since that has its own MMIO handlers and
> lacks atomic_io_modify:
> 
> drivers/watchdog/orion_wdt.o: In function `orion_stop':
> orion_wdt.c:(.text.orion_stop+0x28): undefined reference to `atomic_io_modify'
> orion_wdt.c:(.text.orion_stop+0x3c): undefined reference to `atomic_io_modify'
> drivers/watchdog/orion_wdt.o: In function `armada370_wdt_clock_init':
> orion_wdt.c:(.text.armada370_wdt_clock_init+0x2c): undefined reference to `atomic_io_modify'
> drivers/watchdog/orion_wdt.o: In function `armada375_stop':
> orion_wdt.c:(.text.armada375_stop+0x28): undefined reference to `atomic_io_modify'
> orion_wdt.c:(.text.armada375_stop+0x58): undefined reference to `atomic_io_modify'
> 
> The best workaround I can think of is to add another Kconfig dependency.
> We could add atomic_io_modify() for ebsa110 in theory, but it seemed
> wrong because that platform would never actually use it.
> 
> Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Reviewed-by: Guenter Roeck <linux@...ck-us.net>

> ---
>  drivers/watchdog/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
> index 52a70ee6014f..feead0dbfc55 100644
> --- a/drivers/watchdog/Kconfig
> +++ b/drivers/watchdog/Kconfig
> @@ -453,7 +453,7 @@ config DAVINCI_WATCHDOG
>  config ORION_WATCHDOG
>  	tristate "Orion watchdog"
>  	depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || COMPILE_TEST
> -	depends on ARM
> +	depends on ARM && !ARCH_EBSA110
>  	select WATCHDOG_CORE
>  	help
>  	  Say Y here if to include support for the watchdog timer
> -- 
> 2.9.0
>