1 files changed, 14 insertions, 0 deletions

diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index c8bd33cb3bf7..010600ef58c0 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -30,6 +30,7 @@ enum input_mode {
         alldefconfig,
         randconfig,
         defconfig,
+        savedefconfig,
         listnewconfig,
         oldnoconfig,
 } input_mode = oldaskconfig;
@@ -444,6 +445,7 @@ static struct option long_opts[] = {
         {"oldconfig",       no_argument,       NULL, oldconfig},
         {"silentoldconfig", no_argument,       NULL, silentoldconfig},
         {"defconfig",       optional_argument, NULL, defconfig},
+        {"savedefconfig",   required_argument, NULL, savedefconfig},
         {"allnoconfig",     no_argument,       NULL, allnoconfig},
         {"allyesconfig",    no_argument,       NULL, allyesconfig},
         {"allmodconfig",    no_argument,       NULL, allmodconfig},
@@ -471,6 +473,7 @@ int main(int ac, char **av)
                         sync_kconfig = 1;
                         break;
                 case defconfig:
+                case savedefconfig:
                         defconfig_file = optarg;
                         break;
                 case randconfig:
@@ -526,6 +529,9 @@ int main(int ac, char **av)
                         exit(1);
                 }
                 break;
+        case savedefconfig:
+                conf_read(NULL);
+                break;
         case silentoldconfig:
         case oldaskconfig:
         case oldconfig:
@@ -591,6 +597,8 @@ int main(int ac, char **av)
         case defconfig:
                 conf_set_all_new_symbols(def_default);
                 break;
+        case savedefconfig:
+                break;
         case oldconfig:
         case oldaskconfig:
                 rootEntry = &rootmenu;
@@ -622,6 +630,12 @@ int main(int ac, char **av)
                         fprintf(stderr, _("\n*** Error during update of the kernel configuration.\n\n"));
                         return 1;
                 }
+        } else if (input_mode == savedefconfig) {
+                if (conf_write_defconfig(defconfig_file)) {
+                        fprintf(stderr, _("n*** Error while saving defconfig to: %s\n\n"),
+                                defconfig_file);
+                        return 1;
+                }
         } else if (input_mode != listnewconfig) {
                 if (conf_write(NULL)) {
                         fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));