diff options
| -rw-r--r-- | Documentation/kbuild/kconfig-language.rst | 15 | ||||
| -rw-r--r-- | scripts/kconfig/symbol.c | 4 |
2 files changed, 16 insertions, 3 deletions
diff --git a/Documentation/kbuild/kconfig-language.rst b/Documentation/kbuild/kconfig-language.rst index d4d988aea679..a1601ec3317b 100644 --- a/Documentation/kbuild/kconfig-language.rst +++ b/Documentation/kbuild/kconfig-language.rst @@ -159,11 +159,11 @@ applicable everywhere (see syntax). Given the following example:: config FOO - tristate + tristate "foo" imply BAZ config BAZ - tristate + tristate "baz" depends on BAR The following values are possible: @@ -174,6 +174,9 @@ applicable everywhere (see syntax). n y n N/m/y m y m M/y/n y y y Y/m/n + n m n N/m + m m m M/n + y m n M/n y n * N === === ============= ============== @@ -191,6 +194,14 @@ applicable everywhere (see syntax). ... } + Note: If the feature provided by BAZ is highly desirable for FOO, + FOO should imply not only BAZ, but also its dependency BAR:: + + config FOO + tristate "foo" + imply BAR + imply BAZ + - limiting menu display: "visible if" <expr> This attribute is only applicable to menu blocks, if the condition is diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c index b101ef3c377a..3dc81397d003 100644 --- a/scripts/kconfig/symbol.c +++ b/scripts/kconfig/symbol.c @@ -221,7 +221,7 @@ static void sym_calc_visibility(struct symbol *sym) sym_set_changed(sym); } tri = no; - if (sym->implied.expr && sym->dir_dep.tri != no) + if (sym->implied.expr) tri = expr_calc_value(sym->implied.expr); if (tri == mod && sym_get_type(sym) == S_BOOLEAN) tri = yes; @@ -394,6 +394,8 @@ void sym_calc_value(struct symbol *sym) if (sym->implied.tri != no) { sym->flags |= SYMBOL_WRITE; newval.tri = EXPR_OR(newval.tri, sym->implied.tri); + newval.tri = EXPR_AND(newval.tri, + sym->dir_dep.tri); } } calc_newval: |