target/linux/generic-2.6/patches-2.6.30/026-mips_fix_loading_of_modules_with_unresolved_weak_sy.patch

   1 From 819b4bda18d62b52d04789c4a8d4fc3fbf9ce242 Mon Sep 17 00:00:00 2001
   2 From: Gabor Juhos <juhosg@openwrt.org>
   3 Date: Mon, 13 Jul 2009 10:46:49 +0200
   4 Subject: [PATCH] MIPS: fix loading of modules with unresolved weak symbols
   5
   6 Loading of modules with unresolved weak symbols fails on MIPS
   7 since '88173507e4fc1e7ecd111b0565e8cba0cb7dae6d'.
   8
   9 Modules: handle symbols that have a zero value
  10
  11 The module subsystem cannot handle symbols that are zero.  If symbols
  12 are present that have a zero value then the module resolver prints out a
  13 message that these symbols are unresolved.
  14
  15 We have to use IS_ERR_VALUE() to check that a symbol has been resolved
  16 or not.
  17
  18 Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
  19 ---
  20  arch/mips/kernel/module.c |    4 ++--
  21  1 files changed, 2 insertions(+), 2 deletions(-)
  22
  23 --- a/arch/mips/kernel/module.c
  24 +++ b/arch/mips/kernel/module.c
  25 @@ -303,7 +303,7 @@ int apply_relocate(Elf_Shdr *sechdrs, co
  26                 /* This is the symbol it is referring to */
  27                 sym = (Elf_Sym *)sechdrs[symindex].sh_addr
  28                         + ELF_MIPS_R_SYM(rel[i]);
  29 -               if (!sym->st_value) {
  30 +               if (IS_ERR_VALUE(sym->st_value)) {
  31                         /* Ignore unresolved weak symbol */
  32                         if (ELF_ST_BIND(sym->st_info) == STB_WEAK)
  33                                 continue;
  34 @@ -343,7 +343,7 @@ int apply_relocate_add(Elf_Shdr *sechdrs
  35                 /* This is the symbol it is referring to */
  36                 sym = (Elf_Sym *)sechdrs[symindex].sh_addr
  37                         + ELF_MIPS_R_SYM(rel[i]);
  38 -               if (!sym->st_value) {
  39 +               if (IS_ERR_VALUE(sym->st_value)) {
  40                         /* Ignore unresolved weak symbol */
  41                         if (ELF_ST_BIND(sym->st_info) == STB_WEAK)
  42                                 continue;