i915: Only wait for pending flips before asynchronous flips again.

diff --git a/shared-core/i915_dma.c b/shared-core/i915_dma.c
index 14e0117..c8b7e58 100644 (file)
--- a/shared-core/i915_dma.c
+++ b/shared-core/i915_dma.c
@@ -589,8 +589,9 @@ static void i915_do_dispatch_flip(drm_device_t * dev, int pipe, int sync)
                  dspbase);
 
        BEGIN_LP_RING(4);
-       OUT_RING(MI_WAIT_FOR_EVENT | (pipe ? MI_WAIT_FOR_PLANE_B_FLIP :
-                                     MI_WAIT_FOR_PLANE_A_FLIP));
+       OUT_RING(sync ? 0 :
+                (MI_WAIT_FOR_EVENT | (pipe ? MI_WAIT_FOR_PLANE_B_FLIP :
+                                      MI_WAIT_FOR_PLANE_A_FLIP)));
        OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | (sync ? 0 : ASYNC_FLIP) |
                 (pipe ? DISPLAY_PLANE_B : DISPLAY_PLANE_A));
        OUT_RING(dev_priv->sarea_priv->pitch * dev_priv->cpp);