[PATCH v2 18/22] PCI: xgene: update PCI config space remap function

Lorenzo Pieralisi lorenzo.pieralisi at arm.com
Mon Mar 27 02:49:46 PDT 2017

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_ioremap_nopost* interface to make sure the correct
memory mappings for PCI configuration space are used.

Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi at arm.com>
Cc: Bjorn Helgaas <bhelgaas at google.com>
Cc: Tanmay Inamdar <tinamdar at apm.com>
 drivers/pci/host/pci-xgene.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c
index 1a61087..df8e13c 100644
--- a/drivers/pci/host/pci-xgene.c
+++ b/drivers/pci/host/pci-xgene.c
@@ -248,7 +248,7 @@ static int xgene_pcie_ecam_init(struct pci_config_window *cfg, u32 ipversion)
 		dev_err(dev, "can't get CSR resource\n");
 		return ret;
-	port->csr_base = devm_ioremap_resource(dev, &csr);
+	port->csr_base = devm_ioremap_nopost_resource(dev, &csr);
 	if (IS_ERR(port->csr_base))
 		return PTR_ERR(port->csr_base);
@@ -359,7 +359,7 @@ static int xgene_pcie_map_reg(struct xgene_pcie_port *port,
 	struct resource *res;
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "csr");
-	port->csr_base = devm_ioremap_resource(dev, res);
+	port->csr_base = devm_ioremap_nopost_resource(dev, res);
 	if (IS_ERR(port->csr_base))
 		return PTR_ERR(port->csr_base);

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