net: mdio-gpio: warn about missing bus alias id

Use a sane default bus id (rather than -ENODEV) and print a warning when
the bus alias id is missing.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/phy/mdio-gpio.c b/drivers/net/phy/mdio-gpio.c
index 9c4defdec67b09299f38f1b06bf8eacbccd007d1..5f1a2250018fec5ba01a2a1a1a11f2d736f544a9 100644 (file)
--- a/drivers/net/phy/mdio-gpio.c
+++ b/drivers/net/phy/mdio-gpio.c
@@ -215,6 +215,10 @@ static int mdio_gpio_probe(struct platform_device *pdev)
        if (pdev->dev.of_node) {
                pdata = mdio_gpio_of_get_data(pdev);
                bus_id = of_alias_get_id(pdev->dev.of_node, "mdio-gpio");
+               if (bus_id < 0) {
+                       dev_warn(&pdev->dev, "failed to get alias id\n");
+                       bus_id = 0;
+               }
        } else {
                pdata = dev_get_platdata(&pdev->dev);
                bus_id = pdev->id;