From: =?UTF-8?q?Antoine=20T=C3=A9nart?= <antoine.tenart@free-electrons.com>
Date: Thu, 15 Jun 2017 16:43:22 +0200
Subject: net: mvmdio: check the MII_ADDR_C45 bit is not set for smi operations
Patch-mainline: v4.13-rc1
Git-commit: 440ea77654d0fbb6e144dc90f6fa1d4429d83280
References: bsc#1098633
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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/marvell/mvmdio.c | 6 ++++++
1 file changed, 6 insertions(+)
--- 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_bu
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_b
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;