PCI: xgene: Request host bridge window resources

This change “PCI: xgene: Request host bridge window resources” (commit 0ccb7ee) in Linux kernel is authored by Bjorn Helgaas <bhelgaas [at] google.com> on Sat May 28 18:14:24 2016 -0500.

Description of "PCI: xgene: Request host bridge window resources"

The change “PCI: xgene: Request host bridge window resources” introduces changes as follows.

PCI: xgene: Request host bridge window resources

Request host bridge window resources so they appear in ioport_resource and
iomem_resource and are reflected in /proc/ioports and /proc/iomem.

For example, the following entries did not previously appear in /proc/iomem:

  e180000000-e1ffffffff : /soc/pcie@1f2b0000
    e180000000-e182ffffff : PCI Bus 0000:01
      e180000000-e181ffffff : 0000:01:00.0
      e182000000-e1820fffff : 0000:01:00.0
      e182100000-e1821fffff : 0000:01:00.0
  f000000000-ffffffffff : /soc/pcie@1f2b0000

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

Linux kernel releases containing commit 0ccb7ee

The Linux kernel releases containing this commit are as follows.

Linux kernel code changes from "PCI: xgene: Request host bridge window resources"

There are 4 lines of Linux source code added/deleted in this change. Code changes to Linux kernel are as follows.

 drivers/pci/host/pci-xgene.c | 4 ++++
 1 file changed, 4 insertions(+)
 
diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c
index bc4e1c61206c..7eb20cc76dd3 100644
--- a/drivers/pci/host/pci-xgene.c
+++ b/drivers/pci/host/pci-xgene.c
@@ -540,6 +540,10 @@ static int xgene_pcie_probe_bridge(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
+	ret = devm_request_pci_bus_resources(&pdev->dev, &res);
+	if (ret)
+		goto error;
+
 	ret = xgene_pcie_setup(port, &res, iobase);
 	if (ret)
 		goto error;

The commit for this change in Linux stable tree is 0ccb7ee (patch).

Last modified: 2020/02/09