linux-kernel - Re: [PATCH v3] docs: kconfig: Mention IS_REACHABLE as way for optional dependency

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Message-Id: <b1667246-d6e3-46cb-9b76-997e6d6fe052@app.fastmail.com>
Date: Mon, 17 Feb 2025 14:01:28 +0100
From: "Arnd Bergmann" <arnd@...db.de>
To: "Krzysztof Kozlowski" <krzysztof.kozlowski@...aro.org>,
 "Masahiro Yamada" <masahiroy@...nel.org>,
 "Nathan Chancellor" <nathan@...nel.org>,
 "Nicolas Schier" <nicolas@...sle.eu>, "Jonathan Corbet" <corbet@....net>,
 linux-kbuild@...r.kernel.org, linux-doc@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] docs: kconfig: Mention IS_REACHABLE as way for optional
 dependency

On Mon, Feb 17, 2025, at 12:31, Krzysztof Kozlowski wrote:
> Several drivers express optional Kconfig dependency with FOO || !FOO,
> but for many choices this is not suitable: lack of stubs for !FOO
> like in HWMON.  Describe the second, less favorable way of optional
> dependency with IS_REACHABLE by moving the code from "imply" chapter to
> "Optional dependencies".
>
> Cc: Masahiro Yamada <masahiroy@...nel.org>
> Cc: Arnd Bergmann <arnd@...db.de>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Acked-by: Arnd Bergmann <arnd@...db.de>