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net: mvmdio: check the MII_ADDR_C45 bit is not set for smi operations

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Add a check for the read and write smi operations, to ensure the
MII_ADDR_C45 bit isn't set. This will be needed as soon as the xSMI
support is added to the mvmdio driver.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Antoine Ténart 2017-06-15 16:43:22 +02:00 committed by David S. Miller
parent 1955796640
commit 440ea77654
1 changed files with 6 additions and 0 deletions
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6
drivers/net/ethernet/marvell/mvmdio.c
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@ -126,6 +126,9 @@ static int orion_mdio_read(struct mii_bus *bus, int mii_id,
u32 val;
int ret;
if (regnum & MII_ADDR_C45)
return -EOPNOTSUPP;
ret = orion_mdio_wait_ready(&orion_mdio_smi_ops, bus);
if (ret < 0)
goto out;
@ -157,6 +160,9 @@ static int orion_mdio_write(struct mii_bus *bus, int mii_id,
struct orion_mdio_dev *dev = bus->priv;
int ret;
if (regnum & MII_ADDR_C45)
return -EOPNOTSUPP;
ret = orion_mdio_wait_ready(&orion_mdio_smi_ops, bus);
if (ret < 0)
goto out;