diff --git a/linux/gamma.h b/linux/gamma.h
index bff3f909..da8f52bb 100644
--- a/linux/gamma.h
+++ b/linux/gamma.h
@@ -90,8 +90,11 @@
 
 #define __HAVE_DMA_QUIESCENT		1
 #define DRIVER_DMA_QUIESCENT() do {					\
-	/* FIXME ! */ 							\
-	gamma_dma_quiescent_single(dev);				\
+	drm_gamma_private_t *dev_priv =					\
+		(drm_gamma_private_t *)dev->dev_private;		\
+	if (dev_priv->num_rast == 2)					\
+		gamma_dma_quiescent_dual(dev);				\
+	else gamma_dma_quiescent_single(dev);				\
 	return 0;							\
 } while (0)
 
diff --git a/linux/gamma_dma.c b/linux/gamma_dma.c
index baa6b287..691c55a4 100644
--- a/linux/gamma_dma.c
+++ b/linux/gamma_dma.c
@@ -583,6 +583,8 @@ static int gamma_do_init_dma( drm_device_t *dev, drm_gamma_init_t *init )
 
 	memset( dev_priv, 0, sizeof(drm_gamma_private_t) );
 
+	dev_priv->num_rast = init->num_rast;
+
 	list_for_each(list, &dev->maplist->head) {
 		drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
 		if( r_list->map &&
diff --git a/linux/gamma_drm.h b/linux/gamma_drm.h
index 0d58b07b..20819ded 100644
--- a/linux/gamma_drm.h
+++ b/linux/gamma_drm.h
@@ -84,6 +84,7 @@ typedef struct drm_gamma_init {
 	unsigned int mmio2;
 	unsigned int mmio3;
 	unsigned int buffers_offset;
+	int num_rast;
 } drm_gamma_init_t;
 
 #endif /* _GAMMA_DRM_H_ */
diff --git a/linux/gamma_drv.h b/linux/gamma_drv.h
index 36affa68..3e0e3e65 100644
--- a/linux/gamma_drv.h
+++ b/linux/gamma_drv.h
@@ -40,6 +40,7 @@ typedef struct drm_gamma_private {
 	drm_map_t *mmio1;
 	drm_map_t *mmio2;
 	drm_map_t *mmio3;
+	int num_rast;
 } drm_gamma_private_t;
 
 				/* gamma_dma.c */