From f622f8279581626170154d77d67e67bcb227ca2f Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Tue, 13 Mar 2018 18:56:07 +0900 Subject: [PATCH] kconfig: warn unmet direct dependency of tristate symbols selected by y Commit 246cf9c26bf1 ("kbuild: Warn on selecting symbols with unmet direct dependencies") forcibly promoted ->dir_dep.tri to yes from mod. So, the unmet direct dependencies of tristate symbols are not reported. [Test Case] config MODULES def_bool y option modules config A def_bool y select B config B tristate "B" depends on m This causes unmet dependency because 'B' is forced 'y' ignoring 'depends on m'. This should be warned. On the other hand, the following case ('B' is bool) should not be warned, so 'depends on m' for bool symbols should be naturally treated as 'depends on y'. [Test Case2 (not unmet dependency)] config MODULES def_bool y option modules config A def_bool y select B config B bool "B" depends on m Signed-off-by: Masahiro Yamada --- scripts/kconfig/symbol.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c index 0f7eba7d472a..6acf536c9726 100644 --- a/scripts/kconfig/symbol.c +++ b/scripts/kconfig/symbol.c @@ -243,7 +243,7 @@ static void sym_calc_visibility(struct symbol *sym) tri = yes; if (sym->dir_dep.expr) tri = expr_calc_value(sym->dir_dep.expr); - if (tri == mod) + if (tri == mod && sym_get_type(sym) == S_BOOLEAN) tri = yes; if (sym->dir_dep.tri != tri) { sym->dir_dep.tri = tri; @@ -414,7 +414,7 @@ void sym_calc_value(struct symbol *sym) } } calc_newval: - if (sym->dir_dep.tri == no && sym->rev_dep.tri != no) { + if (sym->dir_dep.tri < sym->rev_dep.tri) { struct expr *e; e = expr_simplify_unmet_dep(sym->rev_dep.expr, sym->dir_dep.expr);