drm: update VIA driver to 2.7.2

Add PCI DMA blitengine to VIA DRM
Add portability code for porting VIA to FreeBSD.
Sync via_drm.h with 3d driver

From: Thomas Hellstrom <unichrome@shipmail.org>, Eric Anholt <anholt@freebsd.org>
Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/char/drm/via_verifier.c b/drivers/char/drm/via_verifier.c
index 4ac495f297f..70c897c8876 100644
--- a/drivers/char/drm/via_verifier.c
+++ b/drivers/char/drm/via_verifier.c
@@ -237,7 +237,7 @@ static hazard_t table3[256];
 static __inline__ int
 eat_words(const uint32_t ** buf, const uint32_t * buf_end, unsigned num_words)
 {
-        if ((*buf - buf_end) >= num_words) {
+        if ((buf_end - *buf) >= num_words) {
                 *buf += num_words;
                 return 0;
         }
@@ -249,14 +249,14 @@ eat_words(const uint32_t ** buf, const uint32_t * buf_end, unsigned num_words)
  * Partially stolen from drm_memory.h
  */
 
-static __inline__ drm_map_t *via_drm_lookup_agp_map(drm_via_state_t * seq,
+static __inline__ drm_local_map_t *via_drm_lookup_agp_map(drm_via_state_t *seq,
                                                     unsigned long offset,
                                                     unsigned long size,
                                                     drm_device_t * dev)
 {
         struct list_head *list;
         drm_map_list_t *r_list;
-        drm_map_t *map = seq->map_cache;
+        drm_local_map_t *map = seq->map_cache;
 
         if (map && map->offset <= offset
             && (offset + size) <= (map->offset + map->size)) {