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Groups > linux.kernel > #1609688

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

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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@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Tanmay Inamdar <tinamdar@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);
 
-- 
2.10.0

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Thread

[PATCH v2 00/22] PCI: fix config and I/O Address space memory mappings Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-03-27 12:00 +0200
  [PATCH v2 06/22] ARM: implement ioremap_nopost() interface Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-03-27 12:10 +0200
    Re: [PATCH v2 06/22] ARM: implement ioremap_nopost() interface Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-03-31 13:10 +0200
      Re: [PATCH v2 06/22] ARM: implement ioremap_nopost() interface Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-04-05 12:30 +0200
  [PATCH v2 21/22] PCI: keystone-dw: update PCI config space remap function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-03-27 12:10 +0200
  [PATCH v2 10/22] PCI: xilinx-nwl: update PCI config space remap function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-03-27 12:10 +0200
  [PATCH v2 11/22] PCI: spear13xx: update PCI config space remap function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-03-27 12:10 +0200
  [PATCH v2 19/22] PCI: tegra: update PCI config space remap function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-03-27 12:10 +0200
  [PATCH v2 12/22] PCI: rockchip: update PCI config space remap function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-03-27 12:10 +0200
  [PATCH v2 18/22] PCI: xgene: update PCI config space remap function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-03-27 12:10 +0200
  [PATCH v2 14/22] PCI: iproc-platform: update PCI config space remap function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-03-27 12:10 +0200
  [PATCH v2 22/22] PCI: versatile: update PCI config space remap function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-03-27 12:10 +0200
  [PATCH v2 17/22] PCI: armada8k: update PCI config space remap function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-03-27 12:10 +0200
  [PATCH v2 15/22] PCI: hisi: update PCI config space remap function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-03-27 12:10 +0200
  [PATCH v2 20/22] PCI: layerscape: update PCI config space remap function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-03-27 12:10 +0200
  [PATCH v2 13/22] PCI: qcom: update PCI config space remap function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-03-27 12:10 +0200

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