mv643xx_eth: fix of_irq_to_resource() error check

of_irq_to_resource() has recently been  fixed to return negative error #'s
along with 0 in case of failure,  however the Marvell MV643xx Ethernet
driver still only regards 0  as invalid IRQ -- fix it up.

Fixes: 7a4228bbff76 ("of: irq: use of_irq_get() in of_irq_to_resource()")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c
index 5794d98d946f35c132f010b58368a15b5534070d..9c94ea9b2b802306c0286472c2255571e8e3ed36 100644 (file)
--- a/drivers/net/ethernet/marvell/mv643xx_eth.c
+++ b/drivers/net/ethernet/marvell/mv643xx_eth.c
@@ -2734,7 +2734,7 @@ static int mv643xx_eth_shared_of_add_port(struct platform_device *pdev,
        ppd.shared = pdev;
 
        memset(&res, 0, sizeof(res));
-       if (!of_irq_to_resource(pnp, 0, &res)) {
+       if (of_irq_to_resource(pnp, 0, &res) <= 0) {
                dev_err(&pdev->dev, "missing interrupt on %s\n", pnp->name);
                return -EINVAL;
        }