bdw: Follow the spec to update the PIPE_CONTROL command

This is the hardware requirement.

Signed-off-by: Zhao Yakui <Yakui.zhao@intel.com>
(cherry picked from commit fc4d39f3b849366ed04223620fa371d76cf813b0)

diff --git a/src/intel_batchbuffer.c b/src/intel_batchbuffer.c
index 52bf443..9dc496d 100644 (file)
--- a/src/intel_batchbuffer.c
+++ b/src/intel_batchbuffer.c
@@ -192,6 +192,7 @@ intel_batchbuffer_emit_mi_flush(struct intel_batchbuffer *batch)
                 OUT_BATCH(batch, CMD_PIPE_CONTROL | (6 - 2));
 
                 OUT_BATCH(batch,
+                          CMD_PIPE_CONTROL_CS_STALL |
                           CMD_PIPE_CONTROL_WC_FLUSH |
                           CMD_PIPE_CONTROL_TC_FLUSH |
                           CMD_PIPE_CONTROL_DC_FLUSH |