kbuild: print only total number of section mismatces found

We have too many section mismatches detected at the moment.
So silence modpost and prevent the option from being
set in a typical allyesconfig build.

Tell the user how to see all the deteils in the summary
message from modpost.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

2 files changed, 8 insertions, 9 deletions

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 0d8a5a4a789d..d090d7201086 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -81,7 +81,7 @@ config HEADERS_CHECK
 
 config DEBUG_SECTION_MISMATCH
         bool "Enable full Section mismatch analysis"
-        default n
+        depends on UNDEFINED
         help
           The section mismatch analysis checks if there are illegal
           references from one section to another section.
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index f8efc93eb700..c2e918e2cef1 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -1125,15 +1125,15 @@ static void report_sec_mismatch(const char *modname, enum mismatch mismatch,
         to = to_is_func ? "function" : "variable";
         to_p = to_is_func ? "()" : "";
 
+        sec_mismatch_count++;
+        if (!sec_mismatch_verbose)
+                return;
+
         fprintf(stderr, "WARNING: %s(%s+0x%llx): Section mismatch in"
                         " reference from the %s %s%s to the %s %s:%s%s\n",
                         modname, fromsec, fromaddr, from, fromsym, from_p,
                         to, tosec, tosym, to_p);
 
-        sec_mismatch_count++;
-        if (!sec_mismatch_verbose)
-                return;
-
         switch (mismatch) {
         case TEXT_TO_INIT:
                 fprintf(stderr,
@@ -1939,10 +1939,9 @@ int main(int argc, char **argv)
                 write_dump(dump_write);
         if (sec_mismatch_count && !sec_mismatch_verbose)
                 fprintf(stderr, "modpost: Found %d section mismatch(es).\n"
-                        "To see additional details select \"Enable full "
-                        "Section mismatch analysis\"\n"
-                        "in the Kernel Hacking menu "
-                        "(CONFIG_SECTION_MISMATCH).\n", sec_mismatch_count);
+                        "To see full details build your kernel with:\n"
+                        "'make CONFIG_DEBUG_SECTION_MISMATCH=y'\n",
+                        sec_mismatch_count);
 
         return err;
 }