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Subject[PATCH 3/3] PCI: keystone: Set DMA mask and coherent DMA mask
Date
Set DMA mask and coherent DMA mask such to indicate the device
can address the entire address space (32-bit in the case of
K2G and 48-bit in the case of AM654).

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
drivers/pci/controller/dwc/pci-keystone.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c
index 6a352528d971..23649c01fe41 100644
--- a/drivers/pci/controller/dwc/pci-keystone.c
+++ b/drivers/pci/controller/dwc/pci-keystone.c
@@ -1203,6 +1203,12 @@ static int __init ks_pcie_probe(struct platform_device *pdev)
return ret;
}

+ if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48)) &&
+ dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) {
+ dev_err(dev, "Cannot set DMA mask\n");
+ return -EINVAL;
+ }
+
ret = of_property_read_u32(np, "num-lanes", &num_lanes);
if (ret)
num_lanes = 1;
--
2.17.1
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