[PATCH] kconfig: make sym_change_count static, let it be altered by 2 functions only

Those two functions are
	void sym_set_change_count(int count)
and
	void sym_add_change_count(int count)

All write accesses to sym_change_count are replaced by calls to above
functions.

Variable and changer-functions are moved to confdata.c.  IMO thats ok, as
sym_change_count is an attribute of the .config's change state.

Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 16 insertions, 4 deletions

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 140742ebd73c..4bbbb5b09c8d 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -100,7 +100,7 @@ int conf_read_simple(const char *name, int def)
                 in = zconf_fopen(name);
                 if (in)
                         goto load;
-                sym_change_count++;
+                sym_add_change_count(1);
                 if (!sym_defconfig_list)
                         return 1;
 
@@ -312,7 +312,7 @@ int conf_read(const char *name)
         struct expr *e;
         int i, flags;
 
-        sym_change_count = 0;
+        sym_set_change_count(0);
 
         if (conf_read_simple(name, S_DEF_USER))
                 return 1;
@@ -364,7 +364,7 @@ int conf_read(const char *name)
                 sym->flags &= flags | ~SYMBOL_DEF_USER;
         }
 
-        sym_change_count += conf_warnings || conf_unsaved;
+        sym_add_change_count(conf_warnings || conf_unsaved);
 
         return 0;
 }
@@ -528,7 +528,7 @@ int conf_write(const char *name)
                  "# configuration written to %s\n"
                  "#\n"), newname);
 
-        sym_change_count = 0;
+        sym_set_change_count(0);
 
         return 0;
 }
@@ -766,6 +766,18 @@ int conf_write_autoconf(void)
         return 0;
 }
 
+static int sym_change_count;
+
+void sym_set_change_count(int count)
+{
+        sym_change_count = count;
+}
+
+void sym_add_change_count(int count)
+{
+        sym_change_count += count;
+}
+
 bool conf_get_changed(void)
 {
         return sym_change_count;