diff --git a/msm/dsi/dsi_ctrl.c b/msm/dsi/dsi_ctrl.c
index 2cb3950bca..6a5c542af2 100644
--- a/msm/dsi/dsi_ctrl.c
+++ b/msm/dsi/dsi_ctrl.c
@@ -419,20 +419,21 @@ static void dsi_ctrl_clear_dma_status(struct dsi_ctrl *dsi_ctrl)
 
 	dsi_hw_ops = dsi_ctrl->hw.ops;
 
+	mutex_lock(&dsi_ctrl->ctrl_lock);
+
 	status = dsi_hw_ops.poll_dma_status(&dsi_ctrl->hw);
 	SDE_EVT32(dsi_ctrl->cell_index, SDE_EVTLOG_FUNC_ENTRY, status);
 
 	status |= (DSI_CMD_MODE_DMA_DONE | DSI_BTA_DONE);
 	dsi_hw_ops.clear_interrupt_status(&dsi_ctrl->hw, status);
 
+	mutex_unlock(&dsi_ctrl->ctrl_lock);
 }
 
 static void dsi_ctrl_post_cmd_transfer(struct dsi_ctrl *dsi_ctrl)
 {
 	struct dsi_ctrl_hw_ops dsi_hw_ops = dsi_ctrl->hw.ops;
 
-	mutex_lock(&dsi_ctrl->ctrl_lock);
-
 	SDE_EVT32(SDE_EVTLOG_FUNC_ENTRY, dsi_ctrl->cell_index, dsi_ctrl->pending_cmd_flags);
 
 	/* In case of broadcast messages, we poll on the slave controller. */
@@ -444,6 +445,8 @@ static void dsi_ctrl_post_cmd_transfer(struct dsi_ctrl *dsi_ctrl)
 		dsi_ctrl_dma_cmd_wait_for_done(dsi_ctrl);
 	}
 
+	mutex_lock(&dsi_ctrl->ctrl_lock);
+
 	if (dsi_ctrl->hw.reset_trig_ctrl)
 		dsi_hw_ops.reset_trig_ctrl(&dsi_ctrl->hw,
 				&dsi_ctrl->host_config.common_config);