diff -Naur spca5xx-le/spca_core.c spca5xx-le-new/spca_core.c
--- spca5xx-le/spca_core.c	2007-06-03 21:30:29.000000000 +0100
+++ spca5xx-le-new/spca_core.c	2008-01-06 12:48:08.000000000 +0000
@@ -535,7 +535,7 @@
 
   if (!pgd_none (*pgd))
     {
-#if PUD_SHIFT
+#ifdef PUD_SHIFT
       pud_t *pud = pud_offset (pgd, adr);
       if (!pud_none (*pud))
 	{
@@ -552,7 +552,7 @@
 	      ret = (unsigned long) page_address (pte_page (pte));
 	      ret |= (adr & (PAGE_SIZE - 1));
 	    }
-#if PUD_SHIFT
+#ifdef PUD_SHIFT
 	}
 #endif
     }