From: Li Zefan on
Those configs are not new:

$ cat .config
...
CONFIG_NAMESPACES=y
...
CONFIG_BLOCK=y
...

But are tagged as NEW:

$ yes "" | make config > myconf
$ cat myconf | grep '(NEW)'
Namespaces support (NAMESPACES) [Y/?] (NEW) y
...
Enable the block layer (BLOCK) [Y/?] (NEW) y
...

You can also notice this bug when using gconfig/xconfig.

It's because the SYMBOL_DEF_USER bit of an invisible symbol is cleared
when the config file is read:

int conf_read(const char *name)
{
...
for_all_symbols(i, sym) {
if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
/* Reset values of generates values, so they'll appear
* as new, if they should become visible, but that
* doesn't quite work if the Kconfig and the saved
* configuration disagree.
*/
if (sym->visible == no && !conf_unsaved)
sym->flags &= ~SYMBOL_DEF_USER;
...
}

But a menu item which represents an invisible symbol is still
visible, if it's sub-menu is visible, so its SYMBOL_DEF_USER
bit should be set to indicate it's not NEW.

Signed-off-by: Li Zefan <lizf(a)cn.fujitsu.com>
---
scripts/kconfig/menu.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
index c547692..85ccd02 100644
--- a/scripts/kconfig/menu.c
+++ b/scripts/kconfig/menu.c
@@ -419,9 +419,13 @@ bool menu_is_visible(struct menu *menu)
if (!sym || sym_get_tristate_value(menu->sym) == no)
return false;

- for (child = menu->list; child; child = child->next)
- if (menu_is_visible(child))
+ for (child = menu->list; child; child = child->next) {
+ if (menu_is_visible(child)) {
+ if (sym)
+ sym->flags |= SYMBOL_DEF_USER;
return true;
+ }
+ }

return false;
}
--
1.6.3

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