kconfig: make oldconfig is now less chatty

Previously when running "make oldconfig" we saw all the propmt lines
from kconfig and noone actully read this.

With this patch the user will only see output if there is new symbols.
This will be seen as "make oldconfig" runs which does not generate any output.

A typical run now looks like this:

$ make oldconfig
scripts/kconfig/conf -o arch/x86/Kconfig
$

If a new symbol is found then we restart the config process like this:
$ make oldconfig
scripts/kconfig/conf -o arch/x86/Kconfig
*
* Restart config...
*
*
* General setup
*
Prompt for development and/or incomplete code/drivers (EXPERIMENTAL) [Y/n/?] y
Local version - append to kernel release (LOCALVERSION) []
...

The bahaviour is similar to what we know when running the implicit
oldconfig target "make silentoldconfig".
"make silentoldconfig" are run as part of the kernel build process
if the configuration has changed.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Roman Zippel <zippel@linux-m68k.org>

diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index bd2a27e1967aca1baaa1a71d970e30bc2ff0029d..6cdaa0cc572fc45c195fba07665f33f697c1f9b0 100644 (file)
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -590,10 +590,10 @@ int main(int ac, char **av)
                conf_set_all_new_symbols(def_random);
                break;
        case ask_silent:
+       case ask_new:
                if (conf_silent_update())
                        exit(1);
                break;
-       case ask_new:
        case ask_all:
        case set_default:
                if (conf_update())