in situations like that, the first thing to do, is assume ed is a package dependency...
then toggle on down to www.google.com/linux
and search "provides ed"
hopefully you will get a search result
"blahblahblah-xxx.xxx.rpm provies blah, blah, blah, ed
OR, you can go to rpmfind.net and search "ed"
and in you case... it seems this assumption may be correct....
ed is a text editor, i have no idea hy a driver would need it... but its worth a try right..
rpm -qa | grep ed
will tell you if ed is already install, if not...
then re-try to install the driver.