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 the devm_pci_remap_cfg* interface to make sure the correct memory mappings for PCI configuration space are used. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx> Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> Cc: Ray Jui <rjui@xxxxxxxxxxxx> Cc: Jon Mason <jonmason@xxxxxxxxxxxx> --- drivers/pci/host/pcie-iproc-platform.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/pci/host/pcie-iproc-platform.c b/drivers/pci/host/pcie-iproc-platform.c index f4909bb..b48d0db 100644 --- a/drivers/pci/host/pcie-iproc-platform.c +++ b/drivers/pci/host/pcie-iproc-platform.c @@ -67,7 +67,8 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev) return ret; } - pcie->base = devm_ioremap(dev, reg.start, resource_size(®)); + pcie->base = devm_pci_remap_cfgspace(dev, reg.start, + resource_size(®)); if (!pcie->base) { dev_err(dev, "unable to map controller registers\n"); return -ENOMEM; -- 2.10.0