32 lines
1.1 KiB
Diff
32 lines
1.1 KiB
Diff
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From 94472e4b2efb4954ed58bf9df9f4595fb038b679 Mon Sep 17 00:00:00 2001
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From: Peter Geis <pgwipeout@gmail.com>
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Date: Wed, 4 Aug 2021 07:42:13 -0400
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Subject: [PATCH 432/478] PCI: dwc: rockchip: set the dma_mask early
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Set the dma_mask to 32 bit early in probe to prevent issues with devices
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that only support 32 bit MSIs.
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Signed-off-by: Peter Geis <pgwipeout@gmail.com>
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---
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drivers/pci/controller/dwc/pcie-dw-rockchip.c | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/drivers/pci/controller/dwc/pcie-dw-rockchip.c b/drivers/pci/controller/dwc/pcie-dw-rockchip.c
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index c9b341e55cbb..916ef44db981 100644
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--- a/drivers/pci/controller/dwc/pcie-dw-rockchip.c
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+++ b/drivers/pci/controller/dwc/pcie-dw-rockchip.c
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@@ -215,6 +215,10 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
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rockchip->pci.dev = dev;
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rockchip->pci.ops = &dw_pcie_ops;
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+ ret = dma_set_mask(rockchip->pci.dev, DMA_BIT_MASK(32));
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+ if (ret)
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+ dev_warn(rockchip->pci.dev, "Failed to set DMA mask to 32-bit. Devices with only 32-bit MSI support may not work properly\n");
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+
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pp = &rockchip->pci.pp;
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pp->ops = &rockchip_pcie_host_ops;
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--
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2.35.3
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