svga: Remove unused code.

src/gallium/drivers/svga/svga_screen.c

@@ -391,8 +391,6 @@ svga_screen_create(struct svga_winsys_screen *sws)
    pipe_mutex_init(svgascreen->tex_mutex);
    pipe_mutex_init(svgascreen->swc_mutex);
 
-   LIST_INITHEAD(&svgascreen->cached_buffers);
-   
    svga_screen_cache_init(svgascreen);
 
    return screen;

src/gallium/drivers/svga/svga_screen.h

@@ -68,12 +68,6 @@ struct svga_screen
    pipe_mutex tex_mutex; 
    pipe_mutex swc_mutex; /* Protects the use of swc and dirty_buffers */
    
-   /** 
-    * List of buffers with cached GMR. Ordered from the most recently used to
-    * the least recently used 
-    */
-   struct list_head cached_buffers;
-   
    struct svga_host_surface_cache cache;
 };
 

src/gallium/drivers/svga/svga_screen_buffer.c

@@ -113,11 +113,6 @@ svga_buffer_destroy_hw_storage(struct svga_screen *ss, struct svga_buffer *sbuf)
    if(sbuf->hw.buf) {
       sws->buffer_destroy(sws, sbuf->hw.buf);
       sbuf->hw.buf = NULL;
-      assert(sbuf->head.prev && sbuf->head.next);
-      LIST_DEL(&sbuf->head);
-#ifdef DEBUG
-      sbuf->head.next = sbuf->head.prev = NULL; 
-#endif
    }
 }
 
@@ -166,8 +161,6 @@ svga_buffer_create_hw_storage(struct svga_screen *ss,
          return PIPE_ERROR_OUT_OF_MEMORY;
       
       assert(!sbuf->needs_flush);
-      assert(!sbuf->head.prev && !sbuf->head.next);
-      LIST_ADD(&sbuf->head, &ss->cached_buffers);
    }
    
    return PIPE_OK;
@@ -288,9 +281,10 @@ svga_buffer_upload_flush(struct svga_context *svga,
 
    assert(sbuf->head.prev && sbuf->head.next);
    LIST_DEL(&sbuf->head);
+#ifdef DEBUG
+   sbuf->head.next = sbuf->head.prev = NULL; 
+#endif
    sbuf->needs_flush = FALSE;
-   /* XXX: do we care about cached_buffers any more ?*/
-   LIST_ADD(&sbuf->head, &ss->cached_buffers);
 
    sbuf->hw.svga = NULL;
    sbuf->hw.boxes = NULL;
@@ -419,17 +413,6 @@ svga_buffer_map_range( struct pipe_screen *screen,
             sws->fence_reference(sws, &fence, NULL);
          }
       }
-      else {
-         if(!(usage & PIPE_BUFFER_USAGE_DISCARD) && !sbuf->needs_flush) {
-            /* We already had the hardware storage but we would have to issue
-             * a download if we hadn't, so move the buffer to the begginning
-             * of the LRU list.
-             */
-            assert(sbuf->head.prev && sbuf->head.next);
-            LIST_DEL(&sbuf->head);
-            LIST_ADD(&sbuf->head, &ss->cached_buffers);
-         }
-      }
          
       map = sws->buffer_map(sws, sbuf->hw.buf, usage);
    }
@@ -699,8 +682,7 @@ svga_buffer_handle(struct svga_context *svga,
       assert(sbuf->hw.svga == svga);
 
       sbuf->needs_flush = TRUE;
-      assert(sbuf->head.prev && sbuf->head.next);
-      LIST_DEL(&sbuf->head);
+      assert(!sbuf->head.prev && !sbuf->head.next);
       LIST_ADDTAIL(&sbuf->head, &svga->dirty_buffers);
    }