[PATCH 01/13] kconfig: split randconfig setup code into set_randconfig_seed()

[Masahiro Yamada]

This code is too big to be placed in the switch statement.

Move the code into a new helper function. I slightly refactor the code
without changing the behavior.

Signed-off-by: Masahiro Yamada <masahi...@kernel.org>
---

 scripts/kconfig/conf.c | 54 ++++++++++++++++++++++++------------------
 1 file changed, 31 insertions(+), 23 deletions(-)

diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index 957d2a0832f7..063c9e7a34c1 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -82,6 +82,36 @@ static void xfgets(char *str, int size, FILE *in)
                printf("%s", str);
 }
 
+static void set_randconfig_seed(void)
+{
+       unsigned int seed;
+       char *env;
+       bool seed_set = false;
+
+       env = getenv("KCONFIG_SEED");
+       if (env && *env) {
+               char *endp;
+
+               seed = strtol(env, &endp, 0);
+               if (*endp == '\0')
+                       seed_set = true;
+       }
+
+       if (!seed_set) {
+               struct timeval now;
+
+               /*
+                * Use microseconds derived seed, compensate for systems where 
it may
+                * be zero.
+                */
+               gettimeofday(&now, NULL);
+               seed = (now.tv_sec + 1) * (now.tv_usec + 1);
+       }
+
+       printf("KCONFIG_SEED=0x%X\n", seed);
+       srand(seed);
+}
+
 static int conf_askvalue(struct symbol *sym, const char *def)
 {
        if (!sym_has_value(sym))
@@ -515,30 +545,8 @@ int main(int ac, char **av)
                        defconfig_file = optarg;
                        break;
                case randconfig:
-               {
-                       struct timeval now;
-                       unsigned int seed;
-                       char *seed_env;
-
-                       /*
-                        * Use microseconds derived seed,
-                        * compensate for systems where it may be zero
-                        */
-                       gettimeofday(&now, NULL);
-                       seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 
1));
-
-                       seed_env = getenv("KCONFIG_SEED");
-                       if( seed_env && *seed_env ) {
-                               char *endp;
-                               int tmp = (int)strtol(seed_env, &endp, 0);
-                               if (*endp == '\0') {
-                                       seed = tmp;
-                               }
-                       }
-                       fprintf( stderr, "KCONFIG_SEED=0x%X\n", seed );
-                       srand(seed);
+                       set_randconfig_seed();
                        break;
-               }
                case oldaskconfig:
                case oldconfig:
                case allnoconfig:
-- 
2.27.0