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SubjectRe: Kconfig troubles when using menuconfig - Was: [patch]Re: [linux-usb-devel] linux-2.6.22-rc5-gf1518a0 build #300 failed in zc0301_core.c
Hi,

On Fri, 22 Jun 2007, Mauro Carvalho Chehab wrote:

> I'm to keep "default y" for the menuconfig items.
>
> Since those don't generate any code (there's no Makefile items
> associated with the menuconfig vars),

I don't know that without checking Makefiles/sources, so I have to assume
it may produce some infrastructure code I don't need.

> this will just improve the
> usability for the final user (and will allow make oldconfig to work).

I'd rather change that.

> There's not much sense on selecting V4L support without selecting a V4L
> driver.

But if only want to enable a video driver, I likely don't want a radio
driver...

bye, Roman



Reset generates values only if Kconfig and .config agree.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>

---
scripts/kconfig/confdata.c | 37 ++++++++++++++++++++++++++-----------
1 file changed, 26 insertions(+), 11 deletions(-)
Index: linux-2.6/scripts/kconfig/confdata.c
===================================================================
--- linux-2.6.orig/scripts/kconfig/confdata.c
+++ linux-2.6/scripts/kconfig/confdata.c
@@ -341,27 +341,42 @@ int conf_read(const char *name)
conf_unsaved++;
/* maybe print value in verbose mode... */
sym_ok:
+ if (!sym_is_choice(sym))
+ continue;
+ /* The choice symbol only has a set value (and thus is not new)
+ * if all its visible childs have values.
+ */
+ prop = sym_get_choice_prop(sym);
+ flags = sym->flags;
+ for (e = prop->expr; e; e = e->left.expr)
+ if (e->right.sym->visible != no)
+ flags &= e->right.sym->flags;
+ sym->flags &= flags | ~SYMBOL_DEF_USER;
+ }
+
+ for_all_symbols(i, sym) {
if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
- if (sym->visible == no)
+ /* 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 disagrees.
+ */
+ if (sym->visible == no && !conf_unsaved)
sym->flags &= ~SYMBOL_DEF_USER;
switch (sym->type) {
case S_STRING:
case S_INT:
case S_HEX:
- if (!sym_string_within_range(sym, sym->def[S_DEF_USER].val))
- sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
+ /* Reset a string value if it's out of range */
+ if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
+ break;
+ sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
+ conf_unsaved++;
+ break;
default:
break;
}
}
- if (!sym_is_choice(sym))
- continue;
- prop = sym_get_choice_prop(sym);
- flags = sym->flags;
- for (e = prop->expr; e; e = e->left.expr)
- if (e->right.sym->visible != no)
- flags &= e->right.sym->flags;
- sym->flags &= flags | ~SYMBOL_DEF_USER;
}

sym_add_change_count(conf_warnings || conf_unsaved);
-
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