[PATCH v4 07/11] net: mvmdio: check the MII_ADDR_C45 bit is not set for smi operations
From: Antoine Tenart <hidden>
Date: 2017-06-14 15:49:07
Also in:
linux-arm-kernel
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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 <redacted> --- drivers/net/ethernet/marvell/mvmdio.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/net/ethernet/marvell/mvmdio.c b/drivers/net/ethernet/marvell/mvmdio.c
index e4aa8e2d2e8a..fe6072aae0a6 100644
--- a/drivers/net/ethernet/marvell/mvmdio.c
+++ b/drivers/net/ethernet/marvell/mvmdio.c@@ -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;
--
2.9.4