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From: Robert Richter <rrichter@amd.com>
To: Masahiro Yamada <masahiroy@kernel.org>,
	Michal Marek <michal.lkml@markovi.net>,
	Jonathan Corbet <corbet@lwn.net>
Cc: Robert Richter <rrichter@amd.com>,
	linux-kbuild@vger.kernel.org, linux-doc@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] Documentation/kbuild: Document the kconfig choice default value
Date: Thu, 15 Jul 2021 11:26:03 +0200	[thread overview]
Message-ID: <49b4c2512afba7a2c2ee39e10f14188ecfcdffc0.1626262835.git.rrichter@amd.com> (raw)
In-Reply-To: <ad9c50c54887bde41ae5de782248231c06a527c0.1626262835.git.rrichter@amd.com>

Document how choice defaults are determined:

Default of a choice is its first visible choice element [1]. Choice
elements do not support default attributes. [2]

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/scripts/kconfig/symbol.c?h=v5.14-rc1#n245
[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/scripts/kconfig/menu.c?h=v5.14-rc1#n494

Signed-off-by: Robert Richter <rrichter@amd.com>
---
 Documentation/kbuild/kconfig-language.rst | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/kbuild/kconfig-language.rst b/Documentation/kbuild/kconfig-language.rst
index 98c24183d8c3..e4d3463594e1 100644
--- a/Documentation/kbuild/kconfig-language.rst
+++ b/Documentation/kbuild/kconfig-language.rst
@@ -417,6 +417,9 @@ definitions of that choice. If a [symbol] is associated to the choice,
 then you may define the same choice (i.e. with the same entries) in another
 place.
 
+The default value of a choice is set to the first visible choice element.
+Choice elements do not support the default attribute like menu entries do.
+
 comment::
 
 	"comment" <prompt>
-- 
2.29.2


  parent reply	other threads:[~2021-07-15  9:26 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-15  9:26 [PATCH] ACPI: Kconfig: Fix table override from built-in initrd Robert Richter
2021-07-15  9:26 ` [PATCH] Documentation: Fix intiramfs script name Robert Richter
2021-07-18 13:58   ` Masahiro Yamada
2021-07-15  9:26 ` Robert Richter [this message]
2021-07-18  9:36   ` [PATCH] Documentation/kbuild: Document the kconfig choice default value Masahiro Yamada
2021-07-19  9:16     ` [PATCH v2] " Robert Richter
2021-07-19 20:20       ` Robert Richter
2021-07-19 20:28         ` [PATCH v3] " Robert Richter
2021-08-05 12:47           ` Masahiro Yamada
2021-07-16 17:29 ` [PATCH] ACPI: Kconfig: Fix table override from built-in initrd Rafael J. Wysocki

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