modpost: remove -s option

The -s option was added by commit 8d8d8289 ("kbuild: do not do
section mismatch checks on vmlinux in 2nd pass").

Now that the second pass does not parse vmlinux, this option is
unneeded.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

scripts/Makefile.modpost

@@ -62,7 +62,7 @@ __modpost: vmlinux.symvers
 
 else
 
-MODPOST += -s \
+MODPOST += \
 	$(if $(KBUILD_NSDEPS),-d $(MODULES_NSDEPS))
 
 ifeq ($(KBUILD_EXTMOD),)

scripts/mod/modpost.c

@@ -30,8 +30,6 @@ static int have_vmlinux = 0;
 static int all_versions = 0;
 /* If we are modposting external module set to 1 */
 static int external_module = 0;
-/* Warn about section mismatch in vmlinux if set to 1 */
-static int vmlinux_section_warnings = 1;
 /* Only warn about unresolved symbols */
 static int warn_unresolved = 0;
 /* How a symbol is exported */
@@ -2078,7 +2076,6 @@ static void read_symbols(const char *modname)
 		}
 	}
 
-	if (!is_vmlinux(modname) || vmlinux_section_warnings)
 	check_sec_ref(mod, modname, &info);
 
 	if (!is_vmlinux(modname)) {
@@ -2576,7 +2573,7 @@ int main(int argc, char **argv)
 	struct dump_list *dump_read_start = NULL;
 	struct dump_list **dump_read_iter = &dump_read_start;
 
-	while ((opt = getopt(argc, argv, "ei:mnsT:o:awENd:")) != -1) {
+	while ((opt = getopt(argc, argv, "ei:mnT:o:awENd:")) != -1) {
 		switch (opt) {
 		case 'e':
 			external_module = 1;
@@ -2599,9 +2596,6 @@ int main(int argc, char **argv)
 		case 'a':
 			all_versions = 1;
 			break;
-		case 's':
-			vmlinux_section_warnings = 0;
-			break;
 		case 'T':
 			files_source = optarg;
 			break;