net: ethoc: Use platform_get_irq() to get the interrupt

platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static
allocation of IRQ resources in DT core code, this causes an issue
when using hierarchical interrupt domains using "interrupts" property
in the node as this bypasses the hierarchical setup and messes up the
irq chaining.

In preparation for removal of static setup of IRQ resource from DT core
code use platform_get_irq().

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/ethoc.c b/drivers/net/ethernet/ethoc.c
index d618a8b785b0cc4afc2993ff0c0e7ab9e87fdf67..437c5acfe222cd86b9c8a46343c4a8882168fcd0 100644 (file)
--- a/drivers/net/ethernet/ethoc.c
+++ b/drivers/net/ethernet/ethoc.c
@@ -1078,14 +1078,11 @@ static int ethoc_probe(struct platform_device *pdev)
 
 
        /* obtain device IRQ number */
-       res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-       if (!res) {
-               dev_err(&pdev->dev, "cannot obtain IRQ\n");
-               ret = -ENXIO;
+       ret = platform_get_irq(pdev, 0);
+       if (ret < 0)
                goto free;
-       }
 
-       netdev->irq = res->start;
+       netdev->irq = ret;
 
        /* setup driver-private data */
        priv = netdev_priv(netdev);