[PATCH 12/15] modpost: move strstarts() to modpost.h

[Masahiro Yamada <masahiroy@kernel.org>]

This macro is useful in file2alias.c as well.

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

 scripts/mod/file2alias.c | 2 +-
 scripts/mod/modpost.c    | 2 --
 scripts/mod/modpost.h    | 2 ++
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index b2d5e6451959..01a4b0eaca6d 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -1513,7 +1513,7 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
 		return;
 
 	/* All our symbols are of form __mod_<name>__<identifier>_device_table. */
-	if (strncmp(symname, "__mod_", strlen("__mod_")))
+	if (!strstarts(symname, "__mod_"))
 		return;
 	name = symname + strlen("__mod_");
 	namelen = strlen(name);
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 1948d69ce2b9..3bbd5efcf3f3 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -341,8 +341,6 @@ static const char *sec_name(const struct elf_info *info, unsigned int secindex)
 	return sech_name(info, &info->sechdrs[secindex]);
 }
 
-#define strstarts(str, prefix) (strncmp(str, prefix, strlen(prefix)) == 0)
-
 static struct symbol *sym_add_exported(const char *name, struct module *mod,
 				       bool gpl_only, const char *namespace)
 {
diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h
index 52efe0026b34..49848fcbe2a1 100644
--- a/scripts/mod/modpost.h
+++ b/scripts/mod/modpost.h
@@ -67,6 +67,8 @@
 
 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
 
+#define strstarts(str, prefix) (strncmp(str, prefix, strlen(prefix)) == 0)
+
 struct buffer {
 	char *p;
 	int pos;
-- 
2.43.0