[PATCH 1/1] PCI: layerscape: Set 64-bit DMA mask

[Frank Li]

From: Guanhua Gao <guanhua.gao@xxxxxxx>

Set DMA mask and coherent DMA mask to enable 64-bit addressing.

Signed-off-by: Guanhua Gao <guanhua.gao@xxxxxxx>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@xxxxxxx>
Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
---
 drivers/pci/controller/dwc/pci-layerscape-ep.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
index 1b884854c18e..c19e7ec58b05 100644
--- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
+++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
@@ -261,6 +261,10 @@ static int __init ls_pcie_ep_probe(struct platform_device *pdev)
 	pcie->max_width = (dw_pcie_readw_dbi(pci, PCIE_LINK_CAP) >>
 			  MAX_LINK_W_SHIFT) & MAX_LINK_W_MASK;
 
+	/* set 64-bit DMA mask and coherent DMA mask */
+	if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)))
+		dev_warn(dev, "Failed to set 64-bit DMA mask.\n");
+
 	platform_set_drvdata(pdev, pcie);
 
 	ret = dw_pcie_ep_init(&pci->ep);
-- 
2.34.1