Both the r128 and radeon fb drivers do bad things with the PCI BAR
corresponding to their option ROM.  They incorrectly use the host address
instead of the BAR address to enable the ROM, and then incorrectly lose the
original value on unmap.  This patch fixes both problems.  Tested on Altix.
Signed-off-by: Jesse Barnes <jbarnes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>