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net: dsa: qca8k: correctly handle mdio read error

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Restore original way to handle mdio read error by returning 0xffff.
This was wrongly changed when the internal_mdio_read was introduced,
now that both legacy and internal use the same function, make sure that
they behave the same way.

Fixes: ce062a0adb ("net: dsa: qca8k: fix kernel panic with legacy mdio mapping")
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ansuel Smith
2022-04-16 01:30:16 +02:00
committed by David S. Miller
parent 2349b83a24
commit 6cfc03b602
1 changed files with 6 additions and 1 deletions
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7
drivers/net/dsa/qca8k.c
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@@ -1287,7 +1287,12 @@ qca8k_internal_mdio_read(struct mii_bus *slave_bus, int phy, int regnum)
if (ret >= 0)
return ret;
return qca8k_mdio_read(priv, phy, regnum);
ret = qca8k_mdio_read(priv, phy, regnum);
if (ret < 0)
return 0xffff;
return ret;
}
static int