path: root/net/core
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authorLendacky, Thomas <Thomas.Lendacky@amd.com>2019-01-17 14:20:14 +0000
committerDavid S. Miller <davem@davemloft.net>2019-01-17 22:06:54 -0800
commit5ab3121beeb76aa6090195b67d237115860dd9ec (patch)
tree1411986840c700e640b8f527320a9ee0d754af5e /net/core
parentnet: phy: add missing phy driver features (diff)
amd-xgbe: Fix mdio access for non-zero ports and clause 45 PHYs
The XGBE hardware has support for performing MDIO operations using an MDIO command request. The driver mistakenly uses the mdio port address as the MDIO command request device address instead of the MDIO command request port address. Additionally, the driver does not properly check for and create a clause 45 MDIO command. Check the supplied MDIO register to determine if the request is a clause 45 operation (MII_ADDR_C45). For a clause 45 operation, extract the device address and register number from the supplied MDIO register and use them to set the MDIO command request device address and register number fields. For a clause 22 operation, the MDIO request device address is set to zero and the MDIO command request register number is set to the supplied MDIO register. In either case, the supplied MDIO port address is used as the MDIO command request port address. Fixes: 732f2ab7afb9 ("amd-xgbe: Add support for MDIO attached PHYs") Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Tested-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
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