diff options
| author | Ulf Magnusson <ulfalizer@gmail.com> | 2018-01-14 15:12:05 +0100 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-01-21 16:49:32 +0100 |
| commit | d3465af60f4471b7b6201928e709bc137fdbee3e (patch) | |
| tree | 561573b37805e3f82f02b2f04acc66abd962dcb3 /scripts/kconfig/menu.c | |
| parent | kconfig: Document SYMBOL_OPTIONAL logic (diff) | |
| download | linux-d3465af60f4471b7b6201928e709bc137fdbee3e.tar.xz linux-d3465af60f4471b7b6201928e709bc137fdbee3e.zip | |
kconfig: Clarify choice dependency propagation
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>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'scripts/kconfig/menu.c')
| -rw-r--r-- | scripts/kconfig/menu.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c index 7634d567e779..dcf22008b2d6 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 value symbols. + */ parentdep = expr_alloc_symbol(sym); } else if (parent->prompt) parentdep = parent->prompt->visible.expr; |