--- linux/drivers/block/loop.c	Fri Dec 21 12:41:53 2001
+++ linux-2.4.17-ericw/drivers/block/loop.c	Sat Dec 22 02:35:17 2001
@@ -90,8 +90,10 @@
 	if (raw_buf != loop_buf) {
 		if (cmd == READ)
 			memcpy(loop_buf, raw_buf, size);
-		else
+		else if (cmd == WRITE) 
 			memcpy(raw_buf, loop_buf, size);
+		else
+			printk(KERN_ERR "loop: Illegal command, %d", cmd);
 	}
 
 	return 0;
@@ -106,9 +108,11 @@
 	if (cmd == READ) {
 		in = raw_buf;
 		out = loop_buf;
-	} else {
+	} else if (cmd == WRITE) {
 		in = loop_buf;
 		out = raw_buf;
+	} else {
+		printk(KERN_ERR "loop: Illegal command, %d", cmd);
 	}
 
 	key = lo->lo_encrypt_key;