kconfig: require an exact match for "is not set" to disable CONFIG option

Currently, any string starting "is not set" disables a CONFIG option.

For example, "# CONFIG_FOO is not settled down" is accepted as valid
input, functioning the same as "# CONFIG_FOO is not set". It is a
long-standing oddity.

Check the line against the exact pattern "is not set".

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 795ac6c9378f1eebd7076e44dde67f97e1768cfb..958be12cd621a865b9ecc532fb2994e3f74ff70e 100644 (file)
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -454,7 +454,7 @@ int conf_read_simple(const char *name, int def)
                        if (!p)
                                continue;
                        *p++ = 0;
-                       if (strncmp(p, "is not set", 10))
+                       if (strcmp(p, "is not set"))
                                continue;
 
                        val = "n";