drm fixup 1/2 - missing bus_address assignment

[Dave Airlie <airlied@linux.ie>]

This is a series of two minor patches for the DRM, one fixes a missing
bus_address and the other from Arjan optimises some access in the i8x0
drivers..


Patch from Tom Arbuckle for missing bus_address

Signed-off-by: Dave Airlie <airlied@linux.ie>

diff -Nru a/drivers/char/drm/drm_bufs.h b/drivers/char/drm/drm_bufs.h
--- a/drivers/char/drm/drm_bufs.h	Sat Aug 28 00:02:27 2004
+++ b/drivers/char/drm/drm_bufs.h	Sat Aug 28 00:02:28 2004
@@ -691,6 +691,7 @@
 			buf->used    = 0;
 			buf->offset  = (dma->byte_count + byte_count + offset);
 			buf->address = (void *)(page + offset);
+			buf->bus_address = virt_to_bus(buf->address);
 			buf->next    = NULL;
 			buf->waiting = 0;
 			buf->pending = 0;