diff options
Diffstat (limited to 'drivers/net/mdio/mdio-mscc-miim.c')
| -rw-r--r-- | drivers/net/mdio/mdio-mscc-miim.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/drivers/net/mdio/mdio-mscc-miim.c b/drivers/net/mdio/mdio-mscc-miim.c index 2d420c9d7520..7d2abaf2b2c9 100644 --- a/drivers/net/mdio/mdio-mscc-miim.c +++ b/drivers/net/mdio/mdio-mscc-miim.c @@ -219,9 +219,10 @@ EXPORT_SYMBOL(mscc_miim_setup); static int mscc_miim_probe(struct platform_device *pdev) { - struct regmap *mii_regmap, *phy_regmap; + struct regmap *mii_regmap, *phy_regmap = NULL; void __iomem *regs, *phy_regs; struct mscc_miim_dev *miim; + struct resource *res; struct mii_bus *bus; int ret; @@ -239,17 +240,21 @@ static int mscc_miim_probe(struct platform_device *pdev) return PTR_ERR(mii_regmap); } - phy_regs = devm_platform_ioremap_resource(pdev, 1); - if (IS_ERR(phy_regs)) { - dev_err(&pdev->dev, "Unable to map internal phy registers\n"); - return PTR_ERR(phy_regs); - } + /* This resource is optional */ + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (res) { + phy_regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(phy_regs)) { + dev_err(&pdev->dev, "Unable to map internal phy registers\n"); + return PTR_ERR(phy_regs); + } - phy_regmap = devm_regmap_init_mmio(&pdev->dev, phy_regs, - &mscc_miim_regmap_config); - if (IS_ERR(phy_regmap)) { - dev_err(&pdev->dev, "Unable to create phy register regmap\n"); - return PTR_ERR(phy_regmap); + phy_regmap = devm_regmap_init_mmio(&pdev->dev, phy_regs, + &mscc_miim_regmap_config); + if (IS_ERR(phy_regmap)) { + dev_err(&pdev->dev, "Unable to create phy register regmap\n"); + return PTR_ERR(phy_regmap); + } } ret = mscc_miim_setup(&pdev->dev, &bus, "mscc_miim", mii_regmap, 0); |