--- drivers/char/agp/backend.c.orig	2005-01-09 12:36:19.000000000 +1100
+++ drivers/char/agp/backend.c	2005-01-10 18:36:15.000000000 +1100
@@ -66,10 +66,17 @@
 	bridge = agp_generic_find_bridge(pdev);
 
 	if (!bridge)
+	{	
+		printk("agp_backend_acquire failed on find bridge\n");
 		return NULL;
+	}
 
 	if (atomic_read(&bridge->agp_in_use))
+	{
+		printk("agp_backend_acquire failed on atomic read\n");
 		return NULL;
+	}
+	printk("agp_backend_acquire: increase agp_in_use\n");
 	atomic_inc(&bridge->agp_in_use);
 	return bridge;
 }
@@ -87,8 +94,10 @@
 void agp_backend_release(struct agp_bridge_data *bridge)
 {
 
-	if (bridge)
+	if (bridge) {
+		printk("agp_backend_acquire: decrease agp_in_use\n");
 		atomic_dec(&bridge->agp_in_use);
+	}
 }
 EXPORT_SYMBOL(agp_backend_release);
 
--- drivers/char/agp/frontend.c.orig	2005-01-10 18:38:05.000000000 +1100
+++ drivers/char/agp/frontend.c	2005-01-10 18:36:52.000000000 +1100
@@ -794,6 +794,7 @@
         if (atomic_read(&agp_bridge->agp_in_use))
                 return -EBUSY;
 
+	printk("agpioc acquire increase agp_in_use\n");
 	atomic_inc(&agp_bridge->agp_in_use);
 
 	agp_fe.backend_acquired = TRUE;