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>

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 40610984a1b54b06c579f953dabeb5ddb1304525..1f1b1549f33f095d3268a75f52f1c882b5eb2c69 100644 (file)
--- 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)) {