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PCI: rcar: Use new OF interrupt mapping when possible

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Use new OF interrupt mapping (of_irq_parse_and_map_pci()) when possible.
This is the recommended method of doing the IRQ mapping.  For old
devicetrees we fall back to the previous practice.

This allows interrupts to be remapped across bridges.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Lucas Stach 2014-04-16 10:24:09 -06:00 committed by Bjorn Helgaas
parent f86b3e3927
commit f8f2fe7355
1 changed files with 7 additions and 1 deletions
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8
drivers/pci/host/pci-rcar-gen2.c
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@ -15,6 +15,7 @@
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_pci.h>
#include <linux/pci.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
@ -180,8 +181,13 @@ static int rcar_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
struct pci_sys_data *sys = dev->bus->sysdata;
struct rcar_pci_priv *priv = sys->private_data;
int irq;
return priv->irq;
irq = of_irq_parse_and_map_pci(dev, slot, pin);
if (!irq)
irq = priv->irq;
return irq;
}
#ifdef CONFIG_PCI_DEBUG