--- zzzz-none-000/linux-2.6.19.2/drivers/mtd/devices/doc2001.c	2007-01-10 19:10:37.000000000 +0000
+++ davinci-8020-5505/linux-2.6.19.2/drivers/mtd/devices/doc2001.c	2007-01-19 14:42:56.000000000 +0000
@@ -401,6 +401,8 @@
 	/* Don't allow read past end of device */
 	if (from >= this->totlen)
 		return -EINVAL;
+	if (!len)
+		return -EINVAL;
 
 	/* Don't allow a single read to cross a 512-byte block boundary */
 	if (from + len > ((from | 0x1ff) + 1))