Kbuild, lto, workaround: Don't warn for initcall_reference in modpost

This reference is discarded, but can cause warnings when it refers to
exit. Ignore for now.

This is a workaround and can be removed once we get rid of
-fno-toplevel-reorder

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1391846481-31491-7-git-send-email-ak@linux.intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 40610984a1b5..1f1b1549f33f 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -1455,6 +1455,10 @@ static void check_section_mismatch(const char *modname, struct elf_info *elf,
                 to = find_elf_symbol(elf, r->r_addend, sym);
                 tosym = sym_name(elf, to);
 
+                if (!strncmp(fromsym, "reference___initcall",
+                                sizeof("reference___initcall")-1))
+                        return;
+
                 /* check whitelist - we may ignore it */
                 if (secref_whitelist(mismatch,
                                         fromsec, fromsym, tosec, tosym)) {