linux-kernel - Re: [PATCH] of: Kconfig: Let OF_UNITTEST depend on "I2C=y" and "I2C

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Date:	Thu, 5 Mar 2015 09:06:54 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Chen Gang <xili_gchen_5257@...mail.com>,
	Pantelis Antoniou <pantelis.antoniou@...sulko.com>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] of: Kconfig: Let OF_UNITTEST depend on "I2C=y" and "I2C_MUX=y"

On Wed, Mar 4, 2015 at 8:49 PM, Arnd Bergmann <arnd@...db.de> wrote:
> --- a/drivers/of/unittest.c
> +++ b/drivers/of/unittest.c
> @@ -979,7 +979,7 @@ static int of_path_platform_device_exists(const char *path)
>         return pdev != NULL;
>  }
>
> -#if IS_ENABLED(CONFIG_I2C)
> +#if IS_BUILTIN(CONFIG_I2C)

Wondering: is there any advantage in using "#if IS_BUILTIN(CONFIG_XXX)"
instead of "#ifdef CONFIG_XXX"?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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