--- drm_auth.c	2006-03-11 15:40:23.000000000 +0800
+++ drm_auth.c.mine	2006-03-11 15:40:14.000000000 +0800
@@ -34,6 +34,9 @@
  */
 
 #include "drmP.h"
+#ifndef DEFINE_SPINLOCK
+#define DEFINE_SPINLOCK(x) spinlock_t x = SPIN_LOCK_UNLOCKED
+#endif
 
 /**
  * Generate a hash key from a magic.