kbuild: introduce __init_refok/__initdata_refok to supress section mismatch warnings

[safe/jmp/linux-2.6] / scripts / mod / modpost.c

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 2909391..7c87267 100644 (file)
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -583,6 +583,12 @@ static int strrcmp(const char *s, const char *sub)
 
 /**
  * Whitelist to allow certain references to pass with no warning.
+ *
+ * Pattern 0:
+ *   Do not warn if funtion/data are marked with __init_refok/__initdata_refok.
+ *   The pattern is identified by:
+ *   fromsec = .text.init.refok | .data.init.refok
+ *
  * Pattern 1:
  *   If a module parameter is declared __initdata and permissions=0
  *   then this is legal despite the warning generated.
@@ -686,6 +692,11 @@ static int secref_whitelist(const char *modname, const char *tosec,
                NULL
        };
 
+       /* Check for pattern 0 */
+       if ((strcmp(fromsec, ".text.init.refok") == 0) ||
+           (strcmp(fromsec, ".data.init.refok") == 0))
+               return 1;
+
        /* Check for pattern 1 */
        if (strcmp(tosec, ".init.data") != 0)
                f1 = 0;