[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>

6 files changed, 21 insertions, 9 deletions

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 140742ebd7..4bbbb5b09c 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;
diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
index 2628023a1f..9b2706a415 100644
--- a/scripts/kconfig/lkc.h
+++ b/scripts/kconfig/lkc.h
@@ -65,6 +65,8 @@ char *zconf_curname(void);
 
 /* confdata.c */
 char *conf_get_default_confname(void);
+void sym_set_change_count(int count);
+void sym_add_change_count(int count);
 
 /* kconfig_load.c */
 void kconfig_load(void);
diff --git a/scripts/kconfig/lkc_proto.h b/scripts/kconfig/lkc_proto.h
index 9f1823c88b..84bb139789 100644
--- a/scripts/kconfig/lkc_proto.h
+++ b/scripts/kconfig/lkc_proto.h
@@ -17,7 +17,6 @@ P(menu_get_parent_menu,struct menu *,(struct menu *menu));
 
 /* symbol.c */
 P(symbol_hash,struct symbol *,[SYMBOL_HASHSIZE]);
-P(sym_change_count,int,);
 
 P(sym_lookup,struct symbol *,(const char *name, int isconst));
 P(sym_find,struct symbol *,(const char *name));
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index ee225ced2c..8f06c474d8 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -30,7 +30,6 @@ struct symbol symbol_yes = {
         .flags = SYMBOL_VALID,
 };
 
-int sym_change_count;
 struct symbol *sym_defconfig_list;
 struct symbol *modules_sym;
 tristate modules_val;
@@ -379,7 +378,7 @@ void sym_clear_all_valid(void)
 
         for_all_symbols(i, sym)
                 sym->flags &= ~SYMBOL_VALID;
-        sym_change_count++;
+        sym_add_change_count(1);
         if (modules_sym)
                 sym_calc_value(modules_sym);
 }
diff --git a/scripts/kconfig/zconf.tab.c_shipped b/scripts/kconfig/zconf.tab.c_shipped
index 2fb0a4fc61..d777fe8562 100644
--- a/scripts/kconfig/zconf.tab.c_shipped
+++ b/scripts/kconfig/zconf.tab.c_shipped
@@ -2135,7 +2135,7 @@ void conf_parse(const char *name)
                 sym_check_deps(sym);
         }
 
-        sym_change_count = 1;
+        sym_set_change_count(1);
 }
 
 const char *zconf_tokenname(int token)
diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/zconf.y
index ab44feb3c6..04a5864c03 100644
--- a/scripts/kconfig/zconf.y
+++ b/scripts/kconfig/zconf.y
@@ -504,7 +504,7 @@ void conf_parse(const char *name)
                 sym_check_deps(sym);
         }
 
-        sym_change_count = 1;
+        sym_set_change_count(1);
 }
 
 const char *zconf_tokenname(int token)