markers: fix duplicate modpost entry

[linux-2.6-omap-h63xx.git] / scripts / mod / modpost.c

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 508c5895c6808880be73eda7c087e70c48348b80..8f038e6d5f986b0ecf0202968559de646c08ea2f 100644 (file)
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -467,6 +467,25 @@ static void parse_elf_finish(struct elf_info *info)
        release_file(info->hdr, info->size);
 }
 
+static int ignore_undef_symbol(struct elf_info *info, const char *symname)
+{
+       /* ignore __this_module, it will be resolved shortly */
+       if (strcmp(symname, MODULE_SYMBOL_PREFIX "__this_module") == 0)
+               return 1;
+       /* ignore global offset table */
+       if (strcmp(symname, "_GLOBAL_OFFSET_TABLE_") == 0)
+               return 1;
+       if (info->hdr->e_machine == EM_PPC)
+               /* Special register function linked on all modules during final link of .ko */
+               if (strncmp(symname, "_restgpr_", sizeof("_restgpr_") - 1) == 0 ||
+                   strncmp(symname, "_savegpr_", sizeof("_savegpr_") - 1) == 0 ||
+                   strncmp(symname, "_rest32gpr_", sizeof("_rest32gpr_") - 1) == 0 ||
+                   strncmp(symname, "_save32gpr_", sizeof("_save32gpr_") - 1) == 0)
+                       return 1;
+       /* Do not ignore this symbol */
+       return 0;
+}
+
 #define CRC_PFX     MODULE_SYMBOL_PREFIX "__crc_"
 #define KSYMTAB_PFX MODULE_SYMBOL_PREFIX "__ksymtab_"
 
@@ -493,11 +512,7 @@ static void handle_modversions(struct module *mod, struct elf_info *info,
                if (ELF_ST_BIND(sym->st_info) != STB_GLOBAL &&
                    ELF_ST_BIND(sym->st_info) != STB_WEAK)
                        break;
-               /* ignore global offset table */
-               if (strcmp(symname, "_GLOBAL_OFFSET_TABLE_") == 0)
-                       break;
-               /* ignore __this_module, it will be resolved shortly */
-               if (strcmp(symname, MODULE_SYMBOL_PREFIX "__this_module") == 0)
+               if (ignore_undef_symbol(info, symname))
                        break;
 /* cope with newer glibc (2.3.4 or higher) STT_ definition in elf.h */
 #if defined(STT_REGISTER) || defined(STT_SPARC_REGISTER)
@@ -1977,7 +1992,8 @@ static void read_markers(const char *fname)
                        mod->skip = 1;
                }
 
-               add_marker(mod, marker, fmt);
+               if (!mod->skip)
+                       add_marker(mod, marker, fmt);
        }
        return;
 fail: