kconfig: Sync with upstream v5.3

This commit introduces the following upstream changes:

0c5b6c28ed68 kconfig: Clear "written" flag to avoid data loss
8e2442a5f86e kconfig: fix missing choice values in auto.conf
3266c806dc86 kconfig: run olddefconfig instead of oldconfig after merging fragments
e3cd5136a4ec kconfig: remove meaningless if-conditional in conf_read()
baa23ec86092 kconfig: Fix spelling of sym_is_changable
cd238effefa2 docs: kbuild: convert docs to ReST and rename to *.rst
bd305f259cd3 kconfig: make arch/*/configs/defconfig the default of KBUILD_DEFCONFIG
5533397d1ec8 kconfig: add static qualifier to expand_string()
b6f7e9f7050b kconfig: require the argument of --defconfig
e0a2668665a5 kconfig: remove always false ifeq ($(KBUILD_DEFCONFIG,) conditional

Signed-off-by: Chris Packham <judge.packham@gmail.com>

1 files changed, 10 insertions, 26 deletions

diff --git a/kconfig/confdata.c b/kconfig/confdata.c
index 6006154..3569d2d 100644
--- a/kconfig/confdata.c
+++ b/kconfig/confdata.c
@@ -177,8 +177,6 @@ static void conf_message(const char *fmt, ...)
 static const char *conf_filename;
 static int conf_lineno, conf_warnings;
 
-const char conf_defname[] = "arch/$(ARCH)/defconfig";
-
 static void conf_warning(const char *fmt, ...)
 {
 	va_list ap;
@@ -233,21 +231,6 @@ static const char *conf_get_autoconfig_name(void)
 	return name ? name : "include/config/auto.conf";
 }
 
-char *conf_get_default_confname(void)
-{
-	static char fullname[PATH_MAX+1];
-	char *env, *name;
-
-	name = expand_string(conf_defname);
-	env = getenv(SRCTREE);
-	if (env) {
-		snprintf(fullname, sizeof(fullname), "%s/%s", env, name);
-		if (is_present(fullname))
-			return fullname;
-	}
-	return name;
-}
-
 static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
 {
 	char *p2;
@@ -551,11 +534,9 @@ int conf_read(const char *name)
 			switch (sym->type) {
 			case S_BOOLEAN:
 			case S_TRISTATE:
-				if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
-					break;
-				if (!sym_is_choice(sym))
+				if (sym->def[S_DEF_USER].tri == sym_get_tristate_value(sym))
 					continue;
-				/* fall through */
+				break;
 			default:
 				if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
 					continue;
@@ -813,7 +794,7 @@ int conf_write_defconfig(const char *filename)
 				goto next_menu;
 			sym->flags &= ~SYMBOL_WRITE;
 			/* If we cannot change the symbol - skip */
-			if (!sym_is_changable(sym))
+			if (!sym_is_changeable(sym))
 				goto next_menu;
 			/* If symbol equals to default value - skip */
 			if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
@@ -867,6 +848,7 @@ int conf_write(const char *name)
 	const char *str;
 	char tmpname[PATH_MAX + 1], oldname[PATH_MAX + 1];
 	char *env;
+	int i;
 	bool need_newline = false;
 
 	if (!name)
@@ -914,7 +896,8 @@ int conf_write(const char *name)
 				     "# %s\n"
 				     "#\n", str);
 			need_newline = false;
-		} else if (!(sym->flags & SYMBOL_CHOICE)) {
+		} else if (!(sym->flags & SYMBOL_CHOICE) &&
+			   !(sym->flags & SYMBOL_WRITTEN)) {
 			sym_calc_value(sym);
 			if (!(sym->flags & SYMBOL_WRITE))
 				goto next;
@@ -922,7 +905,7 @@ int conf_write(const char *name)
 				fprintf(out, "\n");
 				need_newline = false;
 			}
-			sym->flags &= ~SYMBOL_WRITE;
+			sym->flags |= SYMBOL_WRITTEN;
 			conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
 		}
 
@@ -948,6 +931,9 @@ next:
 	}
 	fclose(out);
 
+	for_all_symbols(i, sym)
+		sym->flags &= ~SYMBOL_WRITTEN;
+
 	if (*tmpname) {
 		if (is_same(name, tmpname)) {
 			conf_message("No change to %s", name);
@@ -1082,8 +1068,6 @@ int conf_write_autoconf(int overwrite)
 	if (!overwrite && is_present(autoconf_name))
 		return 0;
 
-	sym_clear_all_valid();
-
 	conf_write_dep("include/config/auto.conf.cmd");
 
 	if (conf_touch_deps())