[PATCH] login: make some locally used functions static

[Sergey Koshechkin]

This patch continues cleanup password code from

  commit 40596b856f61c281fb34f804bf42550c099f26c3
  Author: Sascha Hauer <s.hauer at pengutronix.de>
  Date:   Thu Aug 27 15:58:50 2015 +0200

      login: cleanup password code

Signed-off-by: Sergey Koshechkin <tritel59 at gmail.com>
---
 common/password.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/common/password.c b/common/password.c
index b5b7655..5b754d9 100644
--- a/common/password.c
+++ b/common/password.c
@@ -111,13 +111,12 @@ int password(unsigned char *passwd, size_t length, int flags, int timeout)
 }
 EXPORT_SYMBOL(password);
 
-int is_passwd_default_enable(void)
+static int is_passwd_default_enable(void)
 {
 	return strlen(default_passwd) > 0;
 }
-EXPORT_SYMBOL(is_passwd_default_enable);
 
-int is_passwd_env_enable(void)
+static int is_passwd_env_enable(void)
 {
 	int fd;
 
@@ -130,7 +129,6 @@ int is_passwd_env_enable(void)
 
 	return 1;
 }
-EXPORT_SYMBOL(is_passwd_env_enable);
 
 int passwd_env_disable(void)
 {
@@ -227,7 +225,7 @@ exit:
 }
 EXPORT_SYMBOL(read_env_passwd);
 
-int write_env_passwd(unsigned char *sum, size_t length)
+static int write_env_passwd(unsigned char *sum, size_t length)
 {
 	int fd;
 	unsigned char c;
@@ -274,7 +272,6 @@ exit:
 
 	return ret;
 }
-EXPORT_SYMBOL(write_env_passwd);
 
 static int check_passwd(unsigned char *passwd, size_t length)
 {
-- 
2.6.1