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Diffstat (limited to 'scripts/kconfig/symbol.c')
-rw-r--r--scripts/kconfig/symbol.c24
1 files changed, 23 insertions, 1 deletions
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index 2432298487fb..20136ffefb23 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -258,6 +258,15 @@ static void sym_calc_visibility(struct symbol *sym)
sym->rev_dep.tri = tri;
sym_set_changed(sym);
}
+ tri = no;
+ if (sym->implied.expr && sym->dir_dep.tri != no)
+ tri = expr_calc_value(sym->implied.expr);
+ if (tri == mod && sym_get_type(sym) == S_BOOLEAN)
+ tri = yes;
+ if (sym->implied.tri != tri) {
+ sym->implied.tri = tri;
+ sym_set_changed(sym);
+ }
}
/*
@@ -397,6 +406,10 @@ void sym_calc_value(struct symbol *sym)
newval.tri = EXPR_AND(expr_calc_value(prop->expr),
prop->visible.tri);
}
+ if (sym->implied.tri != no) {
+ sym->flags |= SYMBOL_WRITE;
+ newval.tri = EXPR_OR(newval.tri, sym->implied.tri);
+ }
}
calc_newval:
if (sym->dir_dep.tri == no && sym->rev_dep.tri != no) {
@@ -413,7 +426,8 @@ void sym_calc_value(struct symbol *sym)
}
newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri);
}
- if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)
+ if (newval.tri == mod &&
+ (sym_get_type(sym) == S_BOOLEAN || sym->implied.tri == yes))
newval.tri = yes;
break;
case S_STRING:
@@ -498,6 +512,8 @@ bool sym_tristate_within_range(struct symbol *sym, tristate val)
return false;
if (sym->visible <= sym->rev_dep.tri)
return false;
+ if (sym->implied.tri == yes && val == mod)
+ return false;
if (sym_is_choice_value(sym) && sym->visible == yes)
return val == yes;
return val >= sym->rev_dep.tri && val <= sym->visible;
@@ -750,6 +766,10 @@ const char *sym_get_string_default(struct symbol *sym)
if (sym->type == S_BOOLEAN && val == mod)
val = yes;
+ /* adjust the default value if this symbol is implied by another */
+ if (val < sym->implied.tri)
+ val = sym->implied.tri;
+
switch (sym->type) {
case S_BOOLEAN:
case S_TRISTATE:
@@ -1352,6 +1372,8 @@ const char *prop_get_type_name(enum prop_type type)
return "choice";
case P_SELECT:
return "select";
+ case P_IMPLY:
+ return "imply";
case P_RANGE:
return "range";
case P_SYMBOL: