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: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Thierry Reding <thierry.reding@gmail.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c
index ed8a93f2bfb5..2618f875a600 100644
--- a/drivers/pci/host/pci-tegra.c
+++ b/drivers/pci/host/pci-tegra.c
@@ -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);