diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c index da310de06bf6..5b7923c0698c 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c @@ -242,6 +242,7 @@ int stmmac_mdio_reset(struct mii_bus *bus) if (priv->device->of_node) { struct gpio_desc *reset_gpio; u32 delays[3]; + int ret; reset_gpio = devm_gpiod_get_optional(priv->device, "snps,reset", @@ -249,9 +250,15 @@ int stmmac_mdio_reset(struct mii_bus *bus) if (IS_ERR(reset_gpio)) return PTR_ERR(reset_gpio); - device_property_read_u32_array(priv->device, - "snps,reset-delays-us", - delays, ARRAY_SIZE(delays)); + ret = device_property_read_u32_array(priv->device, + "snps,reset-delays-us", + delays, + ARRAY_SIZE(delays)); + if (ret) { + dev_err(ndev->dev.parent, + "invalid property snps,reset-delays-us\n"); + return -EINVAL; + } if (delays[0]) msleep(DIV_ROUND_UP(delays[0], 1000)); |