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.

Ulf Magnusson committed 8 years ago

Commit d3465af1 parent 3e41ba01 file · +7 −0Browse files

Unified · Split

@@ -323,6 +323,13 @@ void menu_finalize(struct menu *parent) · 322 unmodified lines
323	323	if (menu->sym && menu->sym->type == S_UNKNOWN)
324	324	menu_set_type(sym->type);
325	325	}
	326	+
	327	+ /*
	328	+ * Use the choice itself as the parent dependency of
	329	+ * the contained items. This turns the mode of the
	330	+ * choice into an upper bound on the visibility of the
	331	+ * choice value symbols.
	332	+ */
326	333	parentdep = expr_alloc_symbol(sym);
327	334	} else if (parent->prompt)
328	335	parentdep = parent->prompt->visible.expr;