sparc: Add sparc support for platform_get_irq()

This adds sparc support for platform_get_irq that in the normal case use
platform_get_resource() to get an irq. This standard approach fails for sparc as
there are no resources of type IORESOURCE_IRQ for irqs for sparc.

Cross platform drivers can then use this standard platform function and work on
sparc instead of having to have a special case for sparc.

Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 8727e9c5eea47dd78170e091635f31d29fc7cb52..72c776f2a1f528db39398a0983ae86730ebf24c1 100644 (file)
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -83,9 +83,16 @@ EXPORT_SYMBOL_GPL(platform_get_resource);
  */
 int platform_get_irq(struct platform_device *dev, unsigned int num)
 {
+#ifdef CONFIG_SPARC
+       /* sparc does not have irqs represented as IORESOURCE_IRQ resources */
+       if (!dev || num >= dev->archdata.num_irqs)
+               return -ENXIO;
+       return dev->archdata.irqs[num];
+#else
        struct resource *r = platform_get_resource(dev, IORESOURCE_IRQ, num);
 
        return r ? r->start : -ENXIO;
+#endif
 }
 EXPORT_SYMBOL_GPL(platform_get_irq);