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kbuild: add "Section mismatch" warning whitelist for powerpc 

This patch fixes the following class of "Section mismatch" warnings when
building powerpc platforms.

WARNING: arch/powerpc/kernel/built-in.o - Section mismatch: reference to .init.data:.got2 from prom_entry (offset 0x0)
WARNING: arch/powerpc/platforms/built-in.o - Section mismatch: reference to .init.text:mpc8313_rdb_probe from .machine.desc after 'mach_mpc8313_rdb' (at offset 0x4)
....

Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Li Yang 2007-05-14 18:04:28 +08:00 committed by Sam Ravnborg
parent f892b7d480
commit cd5477911f
1 changed files with 11 additions and 4 deletions
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15
scripts/mod/modpost.c
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@ -650,9 +650,10 @@ static int strrcmp(const char *s, const char *sub)
* tosec = .init.text
*
* Pattern 10:
* ia64 has machvec table for each platform. It is mixture of function
* pointer of .init.text and .text.
* fromsec = .machvec
* ia64 has machvec table for each platform and
* powerpc has a machine desc table for each platform.
* It is mixture of function pointers of .init.text and .text.
* fromsec = .machvec | .machine.desc
**/
static int secref_whitelist(const char *modname, const char *tosec,
const char *fromsec, const char *atsym,
@ -751,7 +752,8 @@ static int secref_whitelist(const char *modname, const char *tosec,
return 1;
/* Check for pattern 10 */
if (strcmp(fromsec, ".machvec") == 0)
if ((strcmp(fromsec, ".machvec") == 0) ||
(strcmp(fromsec, ".machine.desc") == 0))
return 1;
return 0;
@ -887,6 +889,11 @@ static void warn_sec_mismatch(const char *modname, const char *fromsec,
elf->strtab + before->st_name, refsymname))
return;
/* fromsec whitelist - without a valid 'before'
* powerpc has a GOT table in .got2 section */
if (strcmp(fromsec, ".got2") == 0)
return;
if (before && after) {
warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s "
"(between '%s' and '%s')\n",