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path: root/drivers/net/mdio/mdio-mscc-miim.c
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Diffstat (limited to 'drivers/net/mdio/mdio-mscc-miim.c')
-rw-r--r--drivers/net/mdio/mdio-mscc-miim.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/net/mdio/mdio-mscc-miim.c b/drivers/net/mdio/mdio-mscc-miim.c
index 1ee592d3eae4..17f98f609ec8 100644
--- a/drivers/net/mdio/mdio-mscc-miim.c
+++ b/drivers/net/mdio/mdio-mscc-miim.c
@@ -134,8 +134,9 @@ static int mscc_miim_reset(struct mii_bus *bus)
static int mscc_miim_probe(struct platform_device *pdev)
{
- struct mii_bus *bus;
struct mscc_miim_dev *dev;
+ struct resource *res;
+ struct mii_bus *bus;
int ret;
bus = devm_mdiobus_alloc_size(&pdev->dev, sizeof(*dev));
@@ -156,10 +157,14 @@ static int mscc_miim_probe(struct platform_device *pdev)
return PTR_ERR(dev->regs);
}
- dev->phy_regs = devm_platform_ioremap_resource(pdev, 1);
- if (IS_ERR(dev->phy_regs)) {
- dev_err(&pdev->dev, "Unable to map internal phy registers\n");
- return PTR_ERR(dev->phy_regs);
+ /* This resource is optional */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (res) {
+ dev->phy_regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(dev->phy_regs)) {
+ dev_err(&pdev->dev, "Unable to map internal phy registers\n");
+ return PTR_ERR(dev->phy_regs);
+ }
}
ret = of_mdiobus_register(bus, pdev->dev.of_node);