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PCI: rcar: Drop gen2 dummy I/O port region

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Previously we added a dummy I/O port region even though the R-Car
controller doesn't support PCI port I/O.  This resulted in bogus root bus
resources like this:

  pci_bus 0000:00: root bus resource [io  0xee080000-0xee0810ff]
  pci_bus 0000:00: root bus resource [mem 0xee080000-0xee0810ff]

Drop the unused dummy I/O port region and set struct hw_pci.io_optional so
the ARM PCI code doesn't add a default one for us.

Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Bjorn Helgaas 2016-06-21 09:19:34 -05:00
parent 1fa051018d
commit b2a5d3e2cf
1 changed files with 1 additions and 10 deletions
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11
drivers/pci/host/pci-rcar-gen2.c
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@ -97,7 +97,6 @@
struct rcar_pci_priv {
struct device *dev;
void __iomem *reg;
struct resource io_res;
struct resource mem_res;
struct resource *cfg_res;
unsigned busnr;
@ -273,7 +272,6 @@ static int rcar_pci_setup(int nr, struct pci_sys_data *sys)
rcar_pci_setup_errirq(priv);
/* Add PCI resources */
pci_add_resource(&sys->resources, &priv->io_res);
pci_add_resource(&sys->resources, &priv->mem_res);
/* Setup bus number based on platform device id / of bus-range */
@ -371,14 +369,6 @@ static int rcar_pci_probe(struct platform_device *pdev)
return -ENOMEM;
priv->mem_res = *mem_res;
/*
* The controller does not support/use port I/O,
* so setup a dummy port I/O region here.
*/
priv->io_res.start = priv->mem_res.start;
priv->io_res.end = priv->mem_res.end;
priv->io_res.flags = IORESOURCE_IO;
priv->cfg_res = cfg_res;
priv->irq = platform_get_irq(pdev, 0);
@ -421,6 +411,7 @@ static int rcar_pci_probe(struct platform_device *pdev)
hw_private[0] = priv;
memset(&hw, 0, sizeof(hw));
hw.nr_controllers = ARRAY_SIZE(hw_private);
hw.io_optional = 1;
hw.private_data = hw_private;
hw.map_irq = rcar_pci_map_irq;
hw.ops = &rcar_pci_ops;