diff -urN wt2-5l/drivers/char/drm-4.0/i810_dma.c wt2/drivers/char/drm-4.0/i810_dma.c
--- wt2-5l/drivers/char/drm-4.0/i810_dma.c	Sun Mar  3 17:17:46 2002
+++ wt2/drivers/char/drm-4.0/i810_dma.c	Sun Mar  3 21:28:40 2002
@@ -34,6 +34,7 @@
 #include "drmP.h"
 #include "i810_drv.h"
 #include <linux/interrupt.h>	/* For task queue support */
+#include <linux/mm_inline.h>
 
 /* in case we don't have a 2.3.99-pre6 kernel or later: */
 #ifndef VM_DONTCOPY
@@ -288,14 +289,13 @@
 
 static void i810_free_page(drm_device_t *dev, unsigned long page)
 {
-	struct page * p = virt_to_page(page);
-	if(page == 0UL) 
-		return;
+	if (page) {
+		struct page * p = virt_to_page(page);
 	
-	put_page(p);
-	UnlockPage(p);
-	free_page(page);
-	return;
+		put_page(p);
+		UnlockPage(p);
+		free_page(page);
+	}
 }
 
 static int i810_dma_cleanup(drm_device_t *dev)