drm: updated DRM map patch for 32/64 bit systems

I basically combined Paul's patches with additions that I had made
for PCI scatter gather.
I also tried more carefully to avoid problems with the same token
assigned multiple times while trying to use the base address in the
token if possible to gain as much backward compatibility as possible
for broken DRI clients.

From: Paul Mackerras <paulus@samba.org> and Egbert Eich <eich@suse.de>
Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/char/drm/radeon_cp.c b/drivers/char/drm/radeon_cp.c
index 8255cc6fdc28..f24a27c4dd17 100644
--- a/drivers/char/drm/radeon_cp.c
+++ b/drivers/char/drm/radeon_cp.c
@@ -1407,6 +1407,7 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
                 radeon_do_cleanup_cp(dev);
                 return DRM_ERR(EINVAL);
         }
+        dev->agp_buffer_token = init->buffers_offset;
         dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
         if(!dev->agp_buffer_map) {
                 DRM_ERROR("could not find dma buffer region!\n");