linux-kernel - Re: [PATCH -next] watchdog/wm831x: fix build when COMPILE

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Date:   Tue, 28 Feb 2017 10:43:35 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     linux-watchdog@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        Wim Van Sebroeck <wim@...ana.be>,
        Mark Brown <broonie@...nel.org>,
        patches@...nsource.wolfsonmicro.com
Subject: Re: [PATCH -next] watchdog/wm831x: fix build when COMPILE_TEST is
 enabled

On Tue, Feb 28, 2017 at 10:31:15AM -0800, Randy Dunlap wrote:
> From: Randy Dunlap <rdunlap@...radead.org>
> 
> Fix kconfig dependencies when COMPILE_TEST is enabled so that
> interdependent module dependencies are configured as needed.
> 
> Fixes build when WM831X_WATCHDOG=m and COMPILE_TEST=y.
> No other WM831X drivers are enabled.
> The problem is in mixing tristate and boolean dependencies.
> 
> ERROR: "wm831x_reg_write" [drivers/watchdog/wm831x_wdt.ko] undefined!
> ERROR: "wm831x_reg_read" [drivers/watchdog/wm831x_wdt.ko] undefined!
> ERROR: "wm831x_reg_unlock" [drivers/watchdog/wm831x_wdt.ko] undefined!
> ERROR: "wm831x_reg_lock" [drivers/watchdog/wm831x_wdt.ko] undefined!
> ERROR: "wm831x_set_bits" [drivers/watchdog/wm831x_wdt.ko] undefined!
> 
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc:	patches@...nsource.wolfsonmicro.com
> Cc:	Mark Brown <broonie@...nel.org>

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

> ---
>  drivers/watchdog/Kconfig |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- linux-next-20170228.orig/drivers/watchdog/Kconfig
> +++ linux-next-20170228/drivers/watchdog/Kconfig
> @@ -176,7 +176,7 @@ config WDAT_WDT
>  
>  config WM831X_WATCHDOG
>  	tristate "WM831x watchdog"
> -	depends on MFD_WM831X || COMPILE_TEST
> +	depends on MFD_WM831X || (MFD_WM831X=y && COMPILE_TEST)
>  	select WATCHDOG_CORE
>  	help
>  	  Support for the watchdog in the WM831x AudioPlus PMICs.  When