From 30897bb88408751c1eb79ae568b028156c4b169f Mon Sep 17 00:00:00 2001
From: Simon Xue <xxm@rock-chips.com>
Date: Wed, 26 Jun 2019 13:39:06 +0800
Subject: [PATCH] PCI: rockchip: pcie dma transfer function only enabled when
 "rockchip,dma_trx_enabled" set

Change-Id: I8ae69ac649c15bd4920621d6db27173a7cb36b4a
Signed-off-by: Simon Xue <xxm@rock-chips.com>
---
 drivers/pci/host/pcie-rockchip.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c
index d64ca56964d3..707b5bafb679 100644
--- a/drivers/pci/host/pcie-rockchip.c
+++ b/drivers/pci/host/pcie-rockchip.c
@@ -1617,6 +1617,9 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
 		}
 	}
 
+	if (rockchip->dma_trx_enabled == 0)
+		return 0;
+
 	rockchip->dma_obj = rk_pcie_dma_obj_probe(dev);
 	if (IS_ERR(rockchip->dma_obj)) {
 		dev_err(dev, "failed to prepare dma object\n");