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Commit 3e02dc43 authored by Lorenzo Pieralisi's avatar Lorenzo Pieralisi Committed by Bjorn Helgaas
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PCI: tegra: Update PCI config space remap function 



PCI configuration space should be mapped with a memory region type that
generates on the CPU host bus non-posted write transations. Update the
driver to use correct memory mapping attributes to map config space
regions to enforce configuration space non-posted writes behaviour.

Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
parent 26b758f7

drivers/pci/host/pci-tegra.c

+2 −2
Original line number Diff line number Diff line
@@ -380,7 +380,7 @@ static struct tegra_pcie_bus *tegra_pcie_bus_alloc(struct tegra_pcie *pcie, 
						   unsigned int busnr)

{

	struct device *dev = pcie->dev;

	pgprot_t prot = pgprot_device(PAGE_KERNEL);

	pgprot_t prot = pgprot_noncached(PAGE_KERNEL);

	phys_addr_t cs = pcie->cs->start;

	struct tegra_pcie_bus *bus;

	unsigned int i;
@@ -1962,7 +1962,7 @@ static int tegra_pcie_parse_dt(struct tegra_pcie *pcie) 
		rp->pcie = pcie;

		rp->np = port;



		rp->base = devm_ioremap_resource(dev, &rp->regs);

		rp->base = devm_pci_remap_cfg_resource(dev, &rp->regs);

		if (IS_ERR(rp->base))

			return PTR_ERR(rp->base);