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authorLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2017-04-19 19:49:06 +0300
committerBjorn Helgaas <bhelgaas@google.com>2017-04-24 21:53:17 +0300
commit3e02dc439b2bcb9911abb1632029a15590ba3b97 (patch)
tree5ea6d3a0b10a545e5aa97037a4eb13ab94cfab1f /drivers/pci
parent26b758f775a368653b9ecb3f7c06b9ec34ccb1be (diff)
downloadlinux-3e02dc439b2bcb9911abb1632029a15590ba3b97.tar.xz
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>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/host/pci-tegra.c4
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);