Messages in this thread Patch in this message | | | From | Ulf Magnusson <> | Subject | [PATCH] kconfig: Clarify choice dependency propagation | Date | Sun, 14 Jan 2018 15:12:05 +0100 |
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It's easy to miss that choices are special-cased to pass on their mode as the parent dependency.
No functional changes. Only comments added.
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com> --- scripts/kconfig/menu.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c index 92d3f06cd8a2..53964d911708 100644 --- a/scripts/kconfig/menu.c +++ b/scripts/kconfig/menu.c @@ -323,6 +323,13 @@ void menu_finalize(struct menu *parent) if (menu->sym && menu->sym->type == S_UNKNOWN) menu_set_type(sym->type); } + + /* + * Use the choice itself as the parent dependency of + * the contained items. This turns the mode of the + * choice into an upper bound on the visibility of the + * choice symbols. + */ parentdep = expr_alloc_symbol(sym); } else if (parent->prompt) parentdep = parent->prompt->visible.expr; -- 2.14.1
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