kbuild: fix warnings from .pci_fixup section

Now where we do not pass vmlinux to modpost we started
to see section mismatch warnings from .pci_fixup.
Refactored code a little to include these in the
whitelist again.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index be0827f..e1f2b31 100644 (file)
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -592,6 +592,14 @@ static int strrcmp(const char *s, const char *sub)
  *   atsym = *driver, *_template, *_sht, *_ops, *_probe, *probe_one, *_console
  *
  * Pattern 3:
+ *   Whitelist all references from .pci_fixup* section to .init.text
+ *   This is part of the PCI init when built-in
+ *
+ * Pattern 4:
+ *   Whitelist all refereces from .text.head to .init.data
+ *   Whitelist all refereces from .text.head to .init.text
+ *
+ * Pattern 5:
  *   Some symbols belong to init section but still it is ok to reference
  *   these from non-init sections as these symbols don't have any memory
  *   allocated for them and symbol address and value are same. So even
@@ -599,7 +607,8 @@ static int strrcmp(const char *s, const char *sub)
  *   For ex. symbols marking the init section boundaries.
  *   This pattern is identified by
  *   refsymname = __init_begin, _sinittext, _einittext
- * Pattern 4:
+ *
+ * Pattern 6:
  *   During the early init phase we have references from .init.text to
  *   .text we have an intended section mismatch - do not warn about it.
  *   See kernel_init() in init/main.c
@@ -657,26 +666,23 @@ static int secref_whitelist(const char *modname, const char *tosec,
        if (f1 && f2)
                return 1;
 
-       /* Whitelist all references from .pci_fixup section if vmlinux
-        * Whitelist all refereces from .text.head to .init.data if vmlinux
-        * Whitelist all refereces from .text.head to .init.text if vmlinux
-        */
-       if (is_vmlinux(modname)) {
-               if ((strcmp(fromsec, ".pci_fixup") == 0) &&
-                   (strcmp(tosec, ".init.text") == 0))
-               return 1;
-
-               if ((strcmp(fromsec, ".text.head") == 0) &&
-                       ((strcmp(tosec, ".init.data") == 0) ||
-                       (strcmp(tosec, ".init.text") == 0)))
-               return 1;
+       /* Check for pattern 3 */
+       if ((strncmp(fromsec, ".pci_fixup", strlen(".pci_fixup")) == 0) &&
+           (strcmp(tosec, ".init.text") == 0))
+       return 1;
 
-               /* Check for pattern 3 */
-               for (s = pat3refsym; *s; s++)
-                       if (strcmp(refsymname, *s) == 0)
-                               return 1;
-       }
        /* Check for pattern 4 */
+       if ((strcmp(fromsec, ".text.head") == 0) &&
+               ((strcmp(tosec, ".init.data") == 0) ||
+               (strcmp(tosec, ".init.text") == 0)))
+       return 1;
+
+       /* Check for pattern 5 */
+       for (s = pat3refsym; *s; s++)
+               if (strcmp(refsymname, *s) == 0)
+                       return 1;
+
+       /* Check for pattern 6 */
        if ((strcmp(tosec, ".init.text") == 0) &&
            (strcmp(fromsec, ".text") == 0) &&
            (strcmp(refsymname, "kernel_init") == 0))