net: mvmdio: avoid error message for optional IRQ

Per the dt-binding the interrupt is optional so use
platform_get_irq_optional() instead of platform_get_irq(). Since
commit 7723f4c5ecdb ("driver core: platform: Add an error message to
platform_get_irq*()") platform_get_irq() produces an error message

  orion-mdio f1072004.mdio: IRQ index 0 not found

which is perfectly normal if one hasn't specified the optional property
in the device tree.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/marvell/mvmdio.c b/drivers/net/ethernet/marvell/mvmdio.c
index 0b9e851f3da4fb1a37989e1aed311a5ad282353f..d2e2dc5384287c55447e32c5e547df65de0a6894 100644 (file)
--- a/drivers/net/ethernet/marvell/mvmdio.c
+++ b/drivers/net/ethernet/marvell/mvmdio.c
@@ -347,7 +347,7 @@ static int orion_mdio_probe(struct platform_device *pdev)
        }
 
 
-       dev->err_interrupt = platform_get_irq(pdev, 0);
+       dev->err_interrupt = platform_get_irq_optional(pdev, 0);
        if (dev->err_interrupt > 0 &&
            resource_size(r) < MVMDIO_ERR_INT_MASK + 4) {
                dev_err(&pdev->dev,
@@ -364,8 +364,8 @@ static int orion_mdio_probe(struct platform_device *pdev)
                writel(MVMDIO_ERR_INT_SMI_DONE,
                        dev->regs + MVMDIO_ERR_INT_MASK);
 
-       } else if (dev->err_interrupt == -EPROBE_DEFER) {
-               ret = -EPROBE_DEFER;
+       } else if (dev->err_interrupt < 0) {
+               ret = dev->err_interrupt;
                goto out_mdio;
        }