From 032a3187194e050383d7c2df804b194b6fecc6f3 Mon Sep 17 00:00:00 2001 From: Dirk Gouders Date: Fri, 29 Apr 2016 12:43:38 +0200 Subject: kconfig-language: elaborate on the type of a choice The type of a choice can be specified explicitely or it will be set according to members of the choice group, see menu.c:menu_finalize(). Signed-off-by: Dirk Gouders Signed-off-by: Michal Marek --- Documentation/kbuild/kconfig-language.txt | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) (limited to 'Documentation/kbuild') diff --git a/Documentation/kbuild/kconfig-language.txt b/Documentation/kbuild/kconfig-language.txt index 14dd13150aa3..db101857b2c9 100644 --- a/Documentation/kbuild/kconfig-language.txt +++ b/Documentation/kbuild/kconfig-language.txt @@ -284,12 +284,17 @@ choices: "endchoice" This defines a choice group and accepts any of the above attributes as -options. A choice can only be of type bool or tristate, while a boolean -choice only allows a single config entry to be selected, a tristate -choice also allows any number of config entries to be set to 'm'. This -can be used if multiple drivers for a single hardware exists and only a -single driver can be compiled/loaded into the kernel, but all drivers -can be compiled as modules. +options. A choice can only be of type bool or tristate. If no type is +specified for a choice, it's type will be determined by the type of +the first choice element in the group or remain unknown if none of the +choice elements have a type specified, as well. + +While a boolean choice only allows a single config entry to be +selected, a tristate choice also allows any number of config entries +to be set to 'm'. This can be used if multiple drivers for a single +hardware exists and only a single driver can be compiled/loaded into +the kernel, but all drivers can be compiled as modules. + A choice accepts another option "optional", which allows to set the choice to 'n' and no entry needs to be selected. If no [symbol] is associated with a choice, then you can not have multiple -- cgit v1.2.3