PCI: rcar: Use new OF interrupt mapping when possible
authorLucas Stach <l.stach@pengutronix.de>
Mon, 7 Apr 2014 09:30:20 +0000 (11:30 +0200)
committerBjorn Helgaas <bhelgaas@google.com>
Tue, 15 Apr 2014 17:49:14 +0000 (11:49 -0600)
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>
drivers/pci/host/pci-rcar-gen2.c

index fd3e3ab56509125db9e6d25b1b2288eaccda60fd..4fe349dcaf5954c22baed114553fba0ee6a2e566 100644 (file)
@@ -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;
+
+       irq = of_irq_parse_and_map_pci(dev, slot, pin);
+       if (!irq)
+               irq = priv->irq;
 
-       return priv->irq;
+       return irq;
 }
 
 #ifdef CONFIG_PCI_DEBUG