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    Subject[PATCH 7/7] [DSA] mt7530 add linking to mdio
    Date
    based on
    https://github.com/openwrt/openwrt/blob/master/target/linux/mediatek/patches-4.14/0045-net-dsa-mediatek-turn-into-platform-driver.patch

    Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
    ---
    drivers/net/dsa/mt7530.c | 10 ++++++++--
    1 file changed, 8 insertions(+), 2 deletions(-)

    diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
    index 83669f53cb36..e529bc334459 100644
    --- a/drivers/net/dsa/mt7530.c
    +++ b/drivers/net/dsa/mt7530.c
    @@ -1345,7 +1345,7 @@ static int
    mt7530_probe(struct mdio_device *mdiodev)
    {
    struct mt7530_priv *priv;
    - struct device_node *dn;
    + struct device_node *dn, *mdio;

    dn = mdiodev->dev.of_node;

    @@ -1392,8 +1392,14 @@ mt7530_probe(struct mdio_device *mdiodev)
    return PTR_ERR(priv->reset);
    }
    }
    + mdio = of_get_parent(dn);
    + if (!mdio)
    + return -EINVAL;
    +
    + priv->bus = of_mdio_find_bus(mdio);
    + if (!priv->bus)
    + return -EPROBE_DEFER;

    - priv->bus = mdiodev->bus;
    priv->dev = &mdiodev->dev;
    priv->ds->priv = priv;
    priv->ds->ops = &mt7530_switch_ops;
    --
    2.17.1
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