diff -NurpP linux-2.6.33-xbox0.11pre1/drivers/char/xenon_probe.c linux-2.6.33-xbox0.11pre2/drivers/char/xenon_probe.c
--- linux-2.6.33-xbox0.11pre1/drivers/char/xenon_probe.c	2010-03-31 04:14:32.000000000 +0200
+++ linux-2.6.33-xbox0.11pre2/drivers/char/xenon_probe.c	2010-04-03 06:24:28.000000000 +0200
@@ -128,7 +176,7 @@ static ssize_t probe_read(struct file *f
 		/* optimize reads in same longword */
 		unsigned long addr = ppa & ~3;
 		int shift = ppa % 4;
-		probe_mem_t r = { .val = probe_map(readl(mapped + addr)) };
+		probe_mem_t r = { .val = probe_map(readl_be(mapped + addr)) };
 
 		int len = 4 - shift;
 
@@ -174,12 +222,12 @@ static ssize_t probe_write(struct file *
 
 		/* handle partial write */
 		if (len != 4)
-			r.val = probe_map(readl(mapped + addr));
+			r.val = probe_map(readl_be(mapped + addr));
 		
 		if (copy_from_user(&r.p[shift], buf, len))
 			return -EFAULT;
 
-		writel(probe_rmap(r.val), mapped + addr);
+		writel_be(probe_rmap(r.val), mapped + addr);
 
 		count -= len;
 		buf += len;
@@ -223,8 +561,8 @@ static int probe_ioctl(struct inode *ino
 	if (copy_from_user(&iod, argp, sizeof(struct xenon_probe_ioctl)))
 		return -EFAULT;
 
-	printk(KERN_INFO "probe_ioctl(%04x,%08llx)\n",
-		cmd, iod.v64);
+	printk(KERN_INFO "probe_ioctl(%04x,%08llx,%08llx)\n",
+		cmd, iod.addr, iod.v64);
 
 	switch (cmd) {